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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 2727. Отображено 100.
25-10-2012 дата публикации

Quantum interference device, atomic oscillator, and magnetic sensor

Номер: US20120267509A1
Автор: Koji Chindo, Taku Aoyama
Принадлежит: Seiko Epson Corp

A quantum interference device includes: gaseous alkali metal atoms; and a light source for causing a resonant light pair having different frequencies that keep a frequency difference equivalent to an energy difference between two ground states of the alkali metal atoms, the quantum interference device causing the alkali metal atoms and the resonant light pair to interact each other to cause an electromagnetically induced transparency phenomenon (EIT), wherein there are a plurality of the resonant light pairs, and center frequencies of the respective resonant light pairs are different from one another.

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Номер записи: 1
01-11-2012 дата публикации

Light projection unit and light projection apparatus

Номер: US20120275134A1
Автор: David Montgomery, James Suckling, Koji Takahashi, Yoshiyuki Takahira
Принадлежит: Sharp Corp

A light projection unit capable of improving light use efficiency is provided. This light projection unit includes: a fluorescent member that includes an illuminated surface to which laser light is directed, converts at least part of the laser light into fluorescent light and outputs the fluorescent light from chiefly the illuminated surface; and a reflection member that includes a first reflection surface which reflects the fluorescent light output from the fluorescent member. The illuminated surface of the fluorescent member is inclined with respect to a predetermined direction in such a way that the illuminated surface faces in a direction opposite to a light projection direction.

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Номер записи: 2
01-11-2012 дата публикации

Light projection unit and light projection device

Номер: US20120275174A1
Автор: Koji Takahashi, Yoshiyuki Takahira, Yosuke MAEMURA
Принадлежит: Sharp Corp

A light projection unit is provided that can reduce the production of a portion where the light density is excessively increased on a fluorescent member. This light projection unit includes: a light collection member that includes a light entrance surface and a light emission surface which has an area smaller than that of the light entrance surface; a fluorescent member that includes an application surface to which the laser light emitted from the light collection member is applied and that mainly emits fluorescent light from the application surface; and a light projection member that projects the fluorescent light. The light emission surface of the light collection member is arranged a predetermined distance from the application surface of the fluorescent member.

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Номер записи: 3
14-03-2013 дата публикации

SOLID-STATE LASER APPARATUS AND LASER SYSTEM

Номер: US20130064259A1
Автор: ITO Shinji, Onose Takashi, Wakabayashi Osamu
Принадлежит: Gigaphoton Inc.

A solid-state laser apparatus may include: a master oscillator configured to output laser light having at least one longitudinal mode, the master oscillator being capable of changing the spectral linewidth of the laser light output therefrom; at least one amplifier located downstream of the master oscillator on an optical path; a wavelength converter located downstream of the amplifier on the optical path; a detector configured to detect the spectrum of the laser light; and a controller configured to control the spectral linewidth of the laser light output from the master oscillator based on a detection result of the detector. 1. A solid-state laser apparatus comprising:a master oscillator configured to output laser light having at least one longitudinal mode, the master oscillator being capable of changing the spectral linewidth of the laser light output therefrom;at least one amplifier located downstream of the master oscillator on an optical path;a wavelength converter located downstream of the amplifier on the optical path;a detector configured to detect the spectrum of the laser light; anda controller configured to control the spectral linewidth of the laser light output from the master oscillator based on a detection result of the detector.2. The solid-state laser apparatus according to claim 1 , wherein an optical resonator;', 'a gain medium arranged in the optical resonator;', 'a line narrowing module arranged in the optical resonator, the line narrowing module being capable of changing the spectral linewidth; and', 'a driver configured to drive the line narrowing module, and, 'the master oscillator comprisesthe controller controls the driver to control the spectral linewidth.3. The solid-state laser apparatus according to claim 2 , wherein the gain medium comprises a Ti:sapphire crystal.4. The solid-state laser apparatus according to claim 2 , wherein the line narrowing module comprises at least one of a birefringent filter claim 2 , an etalon claim 2 , and ...

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Номер записи: 4
12-09-2013 дата публикации

LIGHT SOURCE AND RECORDING APPARATUS

Номер: US20130235710A1
Автор: Fujita Goro, Maruyama Tsutomu
Принадлежит: SONY CORPORATION

There is provided a light source including a mode-lock laser unit that includes a semiconductor laser and an external resonator unit and emits a laser beam having a predetermined frequency, the semiconductor laser including a saturable absorber unit that applies a reverse bias voltage and a gain unit that applies a gain current, a semiconductor optical amplifier that performs amplification modulation on the laser beam emitted from the mode-lock laser unit, a laser clock generating unit that generates a laser clock synchronized with the laser beam based on a signal detected from the saturable absorber unit when the laser beam oscillates in the mode-lock laser unit, and a modulating unit that generates a driving current synchronized with the laser clock and applies the driving current to the semiconductor optical amplifier.

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Номер записи: 5
26-09-2013 дата публикации

SMALL PACKAGED TUNABLE LASER TRANSMITTER

Номер: US20130250980A1
Автор: Daiber Andrew John, HE Xiaoguang
Принадлежит: EMCORE CORPORATION

A tunable laser transmitter configured in a small package subassembly coupled to a printed circuit board such as an ITLA assembly. The tunable laser transmitter includes a housing with a volume formed by exterior walls. An electrical input interface is positioned at the first end of the housing. An optical output interface is positioned at the second end of the housing and configured to transmit a modulated optical beam. 1. A small , packaged tunable optical transmitter comprising:{'b': 0', '6, 'a rectangular housing having a volume of less than . cubic centimeters, with six planar exterior walls including a bottom, a top, opposing first and second ends, and opposing sidewalls, the exterior walls forming a hermetically sealed interior space that includes a major axis that extends through the first and second ends;'}an electrical input interface positioned at the first end of the housing and aligned with the major axis, the electrical input interface configured to receive an information-containing electrical signal;an optical output interface positioned at the second end of the housing and aligned with the major axis, the optical output interface configured to transmit an optical communication beam;a tunable semiconductor laser positioned in the interior space and operable to emit a laser beam having a selectable wavelength;a semiconductor-based modulator positioned in the interior space along an optical path of the laser beam and, the semiconductor-based modulator configured to impart modulation to the laser beam corresponding to the information-containing electrical signal received through the electrical input interface; anda semiconductor optical amplifier positioned in the interior space and having an input operably coupled to the output of the modulator and an output operatively coupled to the optical output interface.2. The tunable optical transmitter of claim 1 , wherein the tunable semiconductor laser is an external cavity laser that includes a tunable filter ...

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Номер записи: 6
10-10-2013 дата публикации

Light source device and endoscope apparatus comprising the same

Номер: US20130267781A1
Автор: Takeshi Ito
Принадлежит: Olympus Corp

A light source device includes a first semiconductor light source, a second semiconductor light source, and a wavelength converter. The first semiconductor light source emits light in a first wavelength range. The second semiconductor light source emits light in a second wavelength range different from the first wavelength range. The wavelength converter absorbs the light in the first wavelength range to emit light in a third wavelength range different from either of the first wavelength range and the second wavelength range, and transmits the light in the second wavelength range substantially entirely.

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Номер записи: 7
21-11-2013 дата публикации

Co-modulation of DBR Laser and Integrated Optical Amplifier

Номер: US20130308178A1
Автор: Matsui Yasuhiro
Принадлежит: FINISAR CORPORATION

In an embodiment, a laser chip includes a laser, an optical amplifier, a first electrode, and a second electrode. The laser includes an active region. The optical amplifier is integrated in the laser chip in front of and in optical communication with the laser. The first electrode is electrically coupled to the active region. The second electrode is electrically coupled to the optical amplifier. The first electrode and the second electrode are configured to be electrically coupled to a common direct modulation source. 1. A laser chip comprising:a laser including an active region;an optical amplifier integrated in the laser chip in front of and in optical communication with the laser;a first electrode electrically coupled to the active region; anda second electrode electrically coupled to the optical amplifier;wherein the first electrode and the second electrode are configured to be electrically coupled to a common direct modulation source.2. The laser chip of claim 1 , wherein the optical amplifier comprises a semiconductor optical amplifier (SOA).3. The laser chip of claim 2 , further comprising a common guiding structure within the laser and the SOA.4. The laser chip of claim 3 , wherein the common guiding structure comprises a shallow ridge or a buried heterostructure.5. The laser chip of claim 1 , wherein the optical amplifier comprises a multimode interference (MMI) semiconductor optical amplifier (SOA).6. The laser chip of claim 1 , wherein the optical amplifier comprises an N-arm Mach-Zehnder (MZ) modulator where N>1.7. The laser chip of claim 1 , wherein the active region and the optical amplifier are modulated with a common modulation signal supplied by the common direct modulation source.8. The laser chip of claim 7 , wherein peaking in a leading edge of an amplification response of the optical amplifier in an absence of application of the common modulation signal to the optical amplifier is at least partially neutralized by peaking in a falling edge of ...

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Номер записи: 8
21-11-2013 дата публикации

LASER DIODE DRIVER CIRCUIT

Номер: US20130308669A1
Автор: Nakagawa Junichi, Nogami Masamichi, Yoshima Satoshi
Принадлежит: Mitsubishi Electric Corporation

A laser diode drive circuit includes a laser diode (LD), a modulation-current differential drive circuit, a bias-current differential drive circuit, a first inductance connected between an anode of the LD and a positive power source, a second inductance connected between a cathode of the LD and a negative-phase output terminal of the bias-current differential drive circuit, a first resistor connected to a connection point of the anode of the LD and the first inductance and connected to a negative-phase output terminal of the modulation-current differential drive circuit, and a second resistor connected to a connection point of the cathode of the LD and the second inductance and connected to a positive-phase output terminal of the modulation-current differential drive circuit, and a positive-phase output terminal of the bias-current differential drive circuit is connected to the connection point. 1. A laser diode driver circuit comprising:a laser diode that converts a current signal into an optical signal;a bias-current drive circuit that supplies a bias current to the laser diode;a modulation-current drive circuit that supplies a modulation current to the laser diode;a first inductance connected between the anode of the laser diode and a positive power source;a second inductance connected between the cathode of the laser diode and a negative-phase output terminal of the bias-current drive circuit;a first resistor with one end connected to a connection point of the anode of the laser diode and the first inductance and the other end connected to a negative-phase output terminal of the modulation-current drive circuit; anda second resistor including one end connected to a connection point of the cathode of the laser diode and the second inductance and the other end connected to a positive-phase output terminal of the modulation-current drive circuit, whereina positive-phase output terminal of the bias-current drive circuit is connected to the connection point of the ...

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Номер записи: 9
21-11-2013 дата публикации

Directly Modulated Laser for PON Applications

Номер: US20130308959A1
Автор: Yasuhiro Matsui
Принадлежит: Finisar Corp

In an embodiment, a distributed Bragg reflector (DBR) laser includes a gain section and a passive section. The gain section includes an active region, an upper separate confinement heterostructure (SCH), and a lower SCH. The upper SCH is above the active region and has a thickness of at least 60 nanometers (nm). The lower SCH is below the active region and has a thickness of at least 60 nm. The passive section is coupled to the gain section, the passive section having a DBR in optical communication with the active region.

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Номер записи: 10
12-12-2013 дата публикации

Light source apparatus and lighting apparatus

Номер: US20130329397A1
Автор: Hirokazu Shimizu, Hiroyuki Katayama, Hisataka Ito, Jun Tokuda, Shigeo Maeda, Tetsuo Taniuchi, Toshihiro Fujita
Принадлежит: Nitto Denko Corp

A laser lighting module includes a base part, a laser diode which is a blue laser device, a substrate with which the laser diode is in contact, a ceramic phosphor which reflects light entering from the laser diode to thereby change a direction of the light and is excited by the light to generate yellow fluorescence, and a lens for adjusting luminous intensity distribution of light emitted from the ceramic phosphor. The substrate is formed of a material which is thin and has excellent thermal conductivity, and is in surface contact with the laser diode and the base part. In the laser lighting module, since the substrate serves as a device heat radiator, it is possible to easily remove the heat generated by the laser diode.

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Номер записи: 11
02-01-2014 дата публикации

OPTICAL NETWORK COMPONENT AND METHOD FOR PROCESSING DATA IN AN OPTICAL NETWORK

Номер: US20140002880A1
Автор: Gottwald Erich, Rohde Harald
Принадлежит: NOKIA SIEMENS NETWORKS OY

An optical network component is provided comprising a semiconductor optical amplifier with an input and an output, wherein the input is connected to a light source, wherein the output is connected to an amplitude modulator, wherein the semiconductor optical amplifier converts an amplitude modulated signal from the amplitude modulator to a phase modulated signal and provides the phase modulated signal at its output. Also, a transmitter comprising at least one such optical network component is suggested. 1. An optical network componentcomprising a semiconductor optical amplifier with an input and an output,wherein the input is connected to a light source, wherein the output is connected to an amplitude modulator,wherein the semiconductor optical amplifier converts an amplitude modulated signal from the amplitude modulator to a phase modulated signal and provides the phase modulated signal at its output.2. The optical network component according to claim 1 , wherein the optical network component comprises the light source.3. The optical network component according to claim 1 , wherein the light source comprises a laser claim 1 , in particular at least one laser diode.4. The optical network component according to claim 3 , wherein the light source comprises an isolator.5. The optical network component according to claim 1 , wherein the optical network component comprises the amplitude modulator.6. The optical network component according to claim 1 , wherein the amplitude modulator is an electro absorption modulator claim 1 , in particular a reflective electro absorption modulator.7. The optical network component according to claim 1 ,wherein the light source is connected via a splitter to the input of the semiconductor optical amplifier and to the amplitude modulator,wherein an output of the amplitude modulator is connected via a circulator to the output of the semiconductor optical amplifier,wherein the output of the semiconductor optical amplifier is connected to an ...

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Номер записи: 12
23-01-2014 дата публикации

Light emitting device

Номер: US20140021504A1
Автор: Toshikazu Onishi
Принадлежит: Panasonic Corp

A light emitting device includes: a light emitting section including an active layer configured to emit light by application of a voltage; and a thin metal film disposed on a region of the light emitting section irradiated with the light. The thin metal film has a plurality of openings each having a diameter that is smaller than a wavelength of the light, and at least one phosphor is placed in each of the openings.

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Номер записи: 13
06-02-2014 дата публикации

Patterned retarder and optical engine for laser projection apparatus

Номер: US20140036943A1
Автор: Koenraad Vermeirsch, Peter Janssens
Принадлежит: BARCO NV

A patterned retarder is described that may be used with a laser source array to obtain a combined beam suitable for three-dimensional laser image projection using orthogonal polarization states and/or orthogonal color spaces.

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Номер записи: 14
13-03-2014 дата публикации

Method and System for Operating Semiconductor Optical Amplifiers

Номер: US20140072002A1
Автор: Ackley Donald E., Connolly John C., Guenther Harald R., Rudder Scott L.
Принадлежит:

Disclosed are systems and methods for using a semiconductor optical amplifier (SOA) as an optical modulator for pulsed signals. In accordance with the principles of the invention, the SOA can be biased with a negative voltage to suppress transmission and improve modulator extinction and biased with a positive pulsed signal with sufficient amplitude to forward bias the amplifier (SOA), both transmitting the carrier and increasing its amplitude by means of a gain provided by the SOA under forward biased conditions. In addition, the forward bias voltage may be selected to compensate for losses within the SOA. 1. A system for modulating optical radiation , the system comprising:a seed laser emitting light at a known wavelength, the emitted light being emitted as a continuous wave; receiving said continuous wave light emitted at said known wavelength;', 'receiving an electrical signal, said electrical signals comprising at least one pulse of a known duration and duty cycle, each of said at least one pulse having a first voltage and a second voltage, wherein the first voltage is selected to bias the semiconductor optical amplifier to an off-mode and the second voltage is sufficient to forward bias said semiconductor optical amplifier; and, 'a semiconductor optical amplifier that provides optical gain at the known wavelength, said semiconductor optical amplifieroutputting an optical signal at said known wavelength comprising said at least one pulse of said known duration and duty cycle.2. The system of wherein the known wavelength is between 375 nm and 3 μm.3. The system of claim 1 , wherein the seed laser is a semiconductor diode laser.4. The system of claim 1 , wherein the seed laser is a hybrid external-cavity laser.5. The system of claim 1 , wherein the first voltage is the range of about −1 to about −10 volts.6. The system of claim 1 , wherein the duration of each of the pulses is in a range of about 20 ns to about 200 ns.7. The system of claim 1 , wherein the known ...

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Номер записи: 15
07-01-2016 дата публикации

OPTICAL MODULATOR

Номер: US20160006509A1
Автор: Blauvelt Henry A., HE Xiaoguang, VAHALA Kerry
Принадлежит:

An optical modulator including an information-containing radio frequency signal input; a semiconductor device having an optical input optically for receiving the coherent light beam, and a electrode connected to said radio frequency signal input and having a modulated bias potential so that current is generated in the second semiconductor device and extracted therefrom, while the coherent light beam is optically modulated by the signal changing the carrier density in the semiconductor device. 1. An optical modulator comprising:an information-containing radio frequency signal input;a semiconductor device having an optical input for receiving a continuous wave coherent light beam, and an electrode connected to said radio frequency signal input and having a modulated bias potential so that current is generated in the semiconductor device and extracted therefrom, while the coherent light beam is optically modulated by the signal changing the carrier density in the semiconductor device; andan optical output for transferring the modulated optical signal.2. An optical modulator as defined in claim 1 , further comprising a laser for generating the coherent-light beam claim 1 , wherein the laser and the modulator are integrated on a single semiconductor substrate.3. An optical modulator as defined in claim 2 , wherein the bias potential applied to the laser is less than the bias potential applied to the modulator.4. An optical modulator as defined in claim 1 , wherein the electrode connected to the modulator is coupled to a load or current sink.5. An optical modulator as defined in claim 1 , wherein the modulator generates electrical current from the photovoltaic effect claim 1 , the current being withdrawn or extracted from the modulator.6. An optical modulator as defined in claim 1 , wherein the carrier density along the length of the semiconductor modulator in the direction of the optical beam is modulated claim 1 , thereby optically modulating the cw optical beam ...

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Номер записи: 16
08-01-2015 дата публикации

BROADBAND OR MID-INFRARED FIBER LIGHT SOURCES

Номер: US20150008344A1
Автор: Islam Mohammed N.
Принадлежит: OMNI MEDSCI, INC.

An optical system for use in material processing includes a plurality of semiconductor diodes coupled to a beam combiner to generate a multiplexed optical beam. A cladding pumped fiber amplifier or laser receives the multiplexed optical beam and forms an intermediate beam having at least a first wavelength. An optical element receives the intermediate beam and forms an output beam with an output beam wavelength, wherein the output beam wavelength is at least in part longer than the first wavelength. A subsystem includes lenses or mirrors to deliver a delivered portion of the output beam to a sample. The delivered output beam has a temporal duration greater than about 30 picoseconds, a repetition rate between continuous wave and Megahertz or higher, and a time averaged intensity of less than approximately 50 MW/cm. The output beam has a time averaged output power of 20 mW or more. 120-. (canceled)21. An optical system for use in material processing , the system comprising:a plurality of semiconductor diodes, each of the diodes configured to generate an optical beam;a beam combiner configured to receive at least a portion of the optical beams from the plurality of semiconductor diodes and to generate a multiplexed optical beam; anda cladding-pumped fiber amplifier or laser configured to receive at least a portion of the multiplexed optical beam and to form an intermediate beam having at least a first wavelength;an optical element configured to receive at least a portion of the intermediate beam and to form an output beam with an output beam wavelength, wherein at least a portion of the output beam wavelength is longer than at least a portion of the first wavelength; and{'sup': '2', 'a subsystem comprising one or more lenses or mirrors configured to receive a received portion of the output beam and to deliver a delivered portion of the output beam to a sample, wherein the delivered portion of the output beam has a temporal duration greater than approximately 30 ...

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Номер записи: 17
02-01-2020 дата публикации

Optoelectronic Component and Method for Producing an Optoelectronic Component

Номер: US20200006913A1
Автор: Angela Eberhardt, Florian Peskoller, Jörg Frischeisen, Jürgen Bauer, Michael Schmidberger, Thomas Huckenbeck
Принадлежит: OSRAM GMBH, OSRAM OLED GmbH

An optoelectronic component and a method for producing an optoelectronic component are disclosed. In an embodiment an optoelectronic component includes at least one laser source configured to emit at least one laser beam during operation and a self-supporting conversion element arranged in a beam path of the laser beam, wherein the self-supporting conversion element comprises a substrate followed by a first layer, the first layer being directly bonded to the substrate and comprising at least one conversion material embedded in a glass matrix, wherein the glass matrix has a proportion of 50 vol % to 80 vol % inclusive in the first layer, wherein the substrate is free of the glass matrix and of the conversion material and mechanically stabilize the first layer, and wherein the first layer has a layer thickness of less than 200 μm.

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Номер записи: 18
03-02-2022 дата публикации

WARM-COLOR COMPLEX PHOSPHOR, WAVELENGTH CONVERTER AND LIGHT EMITTING DEVICE

Номер: US20220033708A1
Автор: NITTA Mitsuru, OSHIO Shozo
Принадлежит:

Awarm-color complex phosphor includes: a Ce-activated orange phosphor that has an excitation peak within a blue wavelength range of 440 nm or more and less than 480 nm and has a fluorescence peak within an orange wavelength range of 580 nm or more and less than 610 nm; and a Ce-activated red phosphor that has an excitation peak within a green wavelength range of 500 nm or more and less than 550 nm and has a fluorescence peak within a red wavelength range of 610 nm or more and less than 660 nm. Preferably, the Ce-activated red phosphor is a nitride-based compound. 1. A warm-color complex phosphor comprising:{'sup': '3+', 'a Ce-activated orange phosphor that has an excitation peak within a blue wavelength range of 440 nm or more and less than 480 nm and has a fluorescence peak within an orange wavelength range of 580 nm or more and less than 610 nm; and'}{'sup': '3+', 'a Ce-activated red phosphor that has an excitation peak within a green wavelength range of 500 nm or more and less than 550 nm and has a fluorescence peak within a red wavelength range of 610 nm or more and less than 660 nm.'}2. The warm-color complex phosphor according to claim 1 , wherein the Ce-activated red phosphor is a nitride-based compound.3. The warm-color complex phosphor according to claim 2 , wherein the Ce-activated red phosphor is a LaSiN-type nitride-based compound that has a LaSiN-type crystal structure.4. The warm-color complex phosphor according to claim 1 , wherein the Ce-activated orange phosphor is garnet-type silicate.5. The warm-color complex phosphor according to claim 1 , wherein the Ce-activated orange phosphor is a LuCaMg(SiO)-based compound that has a crystal structure of LuCaMg(SiO)or a LuCaMg(SiO)solid solution in which an end member is LuCaMg(SiO).6. The warm-color complex phosphor according to claim 5 , wherein the Ce-activated orange phosphor is the LuCaMg(SiO)-based compound claim 5 , and the Ce-activated red phosphor is the LaSiN-type nitride-based compound.7. A ...

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Номер записи: 19
21-01-2021 дата публикации

Infrared illumination device configured with a gallium and nitrogen containing laser source

Номер: US20210018161A1
Автор: James W. RARING, Melvin McLaurin, Paul Rudy, Steven DenBaars, Troy Trottier
Принадлежит: Kyocera SLD Laser Inc

A light source system or apparatus configured with an infrared illumination source includes a gallium and nitrogen containing laser diode based white light source. The light source system includes a first pathway configured to direct directional electromagnetic radiation from the gallium and nitrogen containing laser diode to a first wavelength converter and to output a white light emission. In some embodiments infrared emitting laser diodes are included to generate the infrared illumination. In some embodiments infrared emitting wavelength converter members are included to generate the infrared illumination. In some embodiments a second wavelength converter is optically excited by a UV or blue emitting gallium and nitrogen containing laser diode, a laser diode operating in the long wavelength visible spectrum such as a green laser diode or a red laser diode, by a near infrared emitting laser diode, by the white light emission produced by the first wavelength converter, or by some combination thereof. A beam shaper may be configured to direct the white light emission and an infrared emission for illuminating a target of interest and transmitting a data signal. In some configurations, sensors and feedback loops are included.

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Номер записи: 20
16-01-2020 дата публикации

WIRELESS POWER TRANSMITTER AND RECEIVER

Номер: US20200018868A1
Автор: JR. Thomas J., Kagle Jonathan Charles, Nugent
Принадлежит:

Embodiments are directed towards a multi-stage wireless power transmission system that includes a transmitting unit and a receiving unit. The transmitting unit transmits a power beam to the receiving unit, which converts the power beam into local electrical power and provides it to a personal electronic device without a corded connection between the receiving unit and a mains power supply. The transmitting unit includes a light-based transmitter to generate and transmit a power beam towards the receiving unit. The receiving unit includes a receiver to receive at least a portion of the power beam and to convert the received power beam into local electrical power. The receiving unit also includes a power output unit to provide the received local power to a personal electronic device when the personal electronic device, which is separable from the receiving unit, is electrically coupled to the power output unit. 1. A system , comprising: a light-based transmitter to generate and transmit a power beam;', 'a controller to manage transmission of the power beam by the light-based transmitter; and, 'a transmitting unit, the transmitting unit including a light-based receiver to receive at least a portion of the power beam and to convert the received portion of the power beam into local electrical power, wherein the local electrical power is local to the non-stationary receiving unit;', 'a power storage system to store the local electrical power; and', 'a power output unit to provide the local electrical power from the power storage system to a personal electronic device when the personal electronic device is electrically coupled to the power output unit, wherein the personal electronic device is separable from the non-stationary receiving unit., 'a non-stationary receiving unit that is remote from the light-based transmitter, the non-stationary receiving unit including2. A system according to claim 1 , wherein the power output unit of the non-stationary receiving unit ...

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Номер записи: 21
22-01-2015 дата публикации

Current controlling apparatus for automotive lamp

Номер: US20150023032A1
Автор: Doo Woon Kang
Принадлежит: SL Corp

A current controlling apparatus for an automotive lamp is provided that adjusts a current applied to the automotive lamp that uses laser light as a light source to adjust the intensity of the laser light. The automotive lamp includes a light source that generates laser light and a phosphor excited by the generated laser light to generate light of a predetermined color. A minor is configured to transmit therethrough a first portion of the generated laser light while reflecting a second portion of the generated laser light. A light receiver is configured to receive reflected laser light from the minor and output an output signal based on an intensity of the received laser light. In addition, a controller is configured to detect an intensity of the generated laser light based on the output signal and adjust a current applied to the light source based on results of the detection.

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Номер записи: 22
28-01-2016 дата публикации

Light-emitting apparatus and a related projection system

Номер: US20160026076A1
Автор: Fei Hu
Принадлежит: Appotronics Corp Ltd

A light-emitting apparatus and a related projection system. The light-emitting apparatus comprises an excitation light source generating an excitation light and a first supplemental laser source generating a first light; a wavelength conversion apparatus comprising a first wavelength conversion layer for absorbing the excitation light to generate a converted light without absorbing the first light; the wavelength conversion layer receiving at one side thereof the excitation light and the first light and emits at same side at least a portion of the first light; a light guide apparatus comprising a smaller first area and a larger second area, the first light and the excitation light respectively entering the first and second areas via a first optical path, and being respectively guided by the first and second areas to the wavelength conversion apparatus; the second area also guiding the converted light and the reflected first light to a second optical path.

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Номер записи: 23
26-01-2017 дата публикации

Communications device with optical injection locking source and related methods

Номер: US20170026125A1
Автор: Charles Middleton, Peter S. Scheuter, Richard DeSalvo, Scott L. MEREDITH
Принадлежит: HARRIS CORP

A communications device may include a remote device having a first E/O modulator to modulate an optical carrier signal with an input signal having a first frequency, an optical waveguide coupled to the remote device, and a local device coupled to the optical waveguide. The local device may include an optical source to generate the optical carrier signal, a second E/O modulator to modulate the optical carrier signal with a reference signal to generate a modulated reference signal, an OIL source coupled to the second E/O modulator and to amplify the modulated reference signal, and an O/E converter coupled to the OIL source and to generate an output signal including a replica of the input signal at a second frequency based upon the reference signal.

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Номер записи: 24
24-01-2019 дата публикации

METHOD OF CONTROLLING SEMICONDUCTOR OPTICAL AMPLIFIER AND OPTICAL AMPLIFYING APPARATUS

Номер: US20190025614A1
Автор: Teranishi Ryota
Принадлежит: SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.

A method of controlling an optical amplifying system that processes an optical signal with the PAM4 mode is disclosed. The optical amplifying system includes variable optical attenuator (VOA) and a semiconductor optical amplifier (SOA). The VOA attenuates the optical signal such that maximum optical power thereof corresponding to one of the physical levels of the PAM4 signal becomes equal to a preset optical level for which the SOA may linearly operable. The SOA may amplify thus attenuated optical signal with a fixed optical gain. 1. A method of controlling an optical amplifying apparatus that receives an optical signal having four or more physical levels following a pulse amplitude modulation (PAM) mode , the optical amplifying apparatus including a variable optical attenuator (VOA) and a semiconductor optical amplifier (SOA) , the method comprising steps of:generating an attenuated optical signal by attenuating the optical signal entering the optical amplifying apparatus such that the attenuated optical signal in maximum power of one of the physical levels thereof becomes a preset level by which the SOA is linearly operable; andamplifying the attenuated optical signal by the SOA with an optical gain.2. The method according to claim 1 ,wherein the step of amplifying the attenuated optical signal is carried out by a fixed optical gain in the SOA.3. The method according to claim 1 ,wherein the step of generating the attenuated optical signal includes steps of:detecting average power of the attenuated optical signal; andestimating the maximum power from the detected average power and a designed average power specified in the PAM mode.4. The method according to claim 1 ,wherein the step of generating the attenuated optical signal includes steps of:detecting average power of the optical signal entering the optical amplifying apparatus; andestimating the maximum power from the detected average power and a designed average power specified in the PAM mode.5. The method ...

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Номер записи: 25
23-01-2020 дата публикации

Wavelength conversion device and light source device

Номер: US20200025341A1
Автор: Keijiro TAKASHIMA, Shunsuke Murai, Syousaku KUBO, Yasuyuki Kawakami, Yosuke MAEMURA, Yusuke Yokobayashi
Принадлежит: KYOTO UNIVERSITY, Stanley Electric Co Ltd

A wavelength conversion device includes: a wavelength conversion element having a phosphor plate that converts the wavelength of incident light upon a light incident surface to generate wavelength-converted light, and emits the wavelength-converted light from a light emission surface; an antenna array constituted of a plurality of optical antennas that are periodically arranged on the light emission surface of the phosphor plate; and a recessed structure including at least one recessed portion provided in the light emission surface of the phosphor plate.

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Номер записи: 26
25-01-2018 дата публикации

Semiconductor light-emitting device and manufacturing method for the same

Номер: US20180026419A1
Автор: Kazuyoshi Hirose, Takahiro Sugiyama, Yoshiro Nomoto, Yoshitaka Kurosaka, Yuu Takiguchi
Принадлежит: Hamamatsu Photonics KK

The embodiment relates to a semiconductor light-emitting device comprising a semiconductor substrate, a first cladding layer, an active layer, a second cladding layer, a contact layer, and a phase modulation layer located between the first cladding and active layers or between the active and second cladding layers. The phase modulation layer comprises a basic layer and plural first modified refractive index regions different from the basic layer in a refractive index. In a virtual square lattice set on the phase modulation layer such that the modified refractive index region is allocated in each of unit constituent regions constituting square lattices, the modified refractive index region is arranged to allow its gravity center position to be separated from the lattice point of the corresponding unit constituent region, and to have a rotation angle about the lattice point according a desired optical image.

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Номер записи: 27
25-01-2018 дата публикации

Wavelength tunable laser device and laser module

Номер: US20180026426A1
Автор: Norihiro Iwai, Tatsuro Kurobe, Yasumasa Kawakita, Yasutaka Higa
Принадлежит: Furukawa Electric Co Ltd

A wavelength tunable laser device includes: a laser cavity formed of a grating and a reflecting mirror including a ring resonator filter; a gain portion; and a phase adjusting portion. The grating creates a first comb-shaped reflection spectrum. The ring resonator filter includes a ring-shaped waveguide and two arms and creates a second comb-shaped reflection spectrum having peaks of a narrower full width than peaks in the first comb-shaped reflection spectrum at a wavelength interval different from that of the first comb-shaped reflection spectrum. One of the peaks in the first comb-shaped reflection spectrum and one of the peaks in the second comb-shaped reflection spectrum are overlapped on a wavelength axis, and a spacing between cavity modes is narrower than the full width at half maximum of the peaks in the first comb-shaped reflection spectrum.

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Номер записи: 28
24-04-2014 дата публикации

METHOD FOR GENERATING COHERENT-PHASE LIGHT FIELDS HAVING A PREDEFINABLE VALUE OF THE FREQUENCY THEREOF, AND OPTICAL FREQUENCY SYNTHESIZER

Номер: US20140112360A1
Автор: Benkler Erik, Telle Harald
Принадлежит: Bundesrepublik Deutschland, vertreten durch das Bundesministerium fuer Wirtschaft und Technologie,

The invention relates to a method for generating coherent-phase light having a predefinable frequency value (ν), comprising the steps of generating working light with a working frequency (ν), generating a frequency comb (), which is a light field that consists of equidistant coherent-phase spectral lines, selecting a comb line (having the index m) from the frequency comb () having a frequency (ν), generating a frequency shift (Δν) of the frequency comb () and/or the working frequency (ν) by means of time-dependent phase settings (φ(t)) modulo a multiple of 2π, in particular of 2π, and phase-coupling the possibly frequency-shifted fields of the working light (ν) and the one possibly frequency-shifted frequency comb line (ν), so that the frequencies thereof are rigidly phase-coupled via the frequency shift (Δν), and working light having the desired frequency (ν) is obtained. 1. Method for generating coherent-phase light having a predefinable frequency value (ν) , comprising the steps of{'sub': 'SL', '(a) generating working light with a working frequency (ν),'}{'b': '10', '(b) generating a frequency comb (), which is a light field that consists of equidistant coherent-phase spectral lines,'}{'b': '10', 'sub': 'm', '(c) selecting a comb line (having the index m) from the frequency comb () having a frequency (ν),'}{'b': '10', 'sub': SL', 'S, '(d) generating a frequency shift (Δν) of the frequency comb () and/or the working frequency (ν) by means of time-dependent phase settings (φ(t)) modulo a multiple of 2π, in particular of 2π, and'}{'sub': SL', 'm', 'Soll, '(e) phase-coupling the possibly frequency-shifted fields of the working light (ν) and the one possibly frequency-shifted frequency comb line (ν), so that the frequencies thereof are rigidly phase-coupled via the frequency shift (Δν), and working light having the desired frequency (ν) is obtained.'}2. Method according to claim 1 , wherein the changes in phase setting (φ(t)) are carried-out at points of time (t) that ...

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Номер записи: 29
24-01-2019 дата публикации

Single-Pass Ring-Modulated Laser

Номер: US20190027898A1
Автор: Bovington Jock, Krishnamoorthy Ashok V., Saeedi Saman, Zheng Xuezhe
Принадлежит: Axalume, Inc.

An optical source may include an optical gain chip that provides an optical signal and that is optically coupled to an SOI chip. The optical gain chip may include a reflective layer. Moreover, the SOI chip may include: a first optical waveguide, a first ring resonator that selectively optically coupled to a second optical waveguide and that performs phase modulation and filtering of the optical signal, the second optical waveguide, an amplitude modulator, and an output port. Note that the reflective layer in the optical gain chip and the amplitude modulator may define an optical cavity. Furthermore, a resonance of the first ring resonator may be aligned with a lasing wavelength, and the resonance of the first ring resonator and a resonance of the amplitude modulator may be offset from each other. Additionally, modulation of the first ring resonator and the amplitude modulator may be in-phase with each other. 1. An optical source , comprising:an optical gain chip configured to provides an optical signal, wherein the optical gain chip comprises a reflective layer at one end of the optical gain chip; and a first optical waveguide configured to convey the optical signal;', 'a first ring resonator selectively optically coupled to the first optical waveguide, wherein the first ring resonator is configured to perform phase modulation and filtering of the optical signal;', 'a second optical waveguide selectively optically coupled to the first ring resonator and configured to convey at least a first portion of the optical signal;', 'an amplitude modulator, optically coupled to the second optical waveguide, configured to reflect at least a second portion of the optical signal back into the second optical waveguide and to pass and amplitude modulate at least a third portion of the optical signal; and', 'an output port, optically coupled to the optical modulator, configured to provide at least the third portion of the optical signal, wherein the reflective layer in the optical ...

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Номер записи: 30
24-01-2019 дата публикации

Rapidly Tunable Silicon Modulated Laser

Номер: US20190027899A1
Автор: Bovington Jock, Krishnamoorthy Ashok V., Saeedi Saman, Zheng Xuezhe
Принадлежит: Axalume, Inc.

An optical source may include an optical gain chip that provides an optical signal and that is optically coupled to an SOI chip. The optical gain chip may include a reflective layer. Moreover, the SOI chip may include: a common optical waveguide, a splitter that splits the optical signal into optical signals, a first pair of resonators that are selectively optically coupled to the common optical waveguide and that are configured to perform modulation and filtering of the optical signals, and a first bus optical waveguide that is selectively optically coupled to the first pair of resonators. Furthermore, resonance wavelengths of the resonators may be offset from each other with a (e.g., fixed) separation approximately equal or corresponding to a modulation amplitude, and a reflectivity of the first pair of resonators may be approximately independent of the modulation. 1. An optical source , comprising:an optical gain chip configured to provides an optical signal, wherein the optical gain chip comprises a reflective layer at one end of the optical gain chip; and a common optical waveguide configured to convey the optical signal;', 'a splitter, optically coupled to the common optical waveguide, configured to split the optical signal into optical signals on through optical waveguides;', 'a first pair of resonators selectively optically coupled to the through optical waveguides, wherein the resonators are configured to perform modulation and filtering of the optical signals; and', 'a first bus optical waveguide selectively optically coupled to the first pair of resonators, wherein the reflective layer in the optical gain chip and the first pair of resonators defines a first optical cavity,', 'wherein, during operation of the optical source, resonance wavelengths of the resonators are offset from each other with a separation approximately equal to a modulation amplitude, and', 'wherein, during operation of the optical source, a reflectivity of the first pair of resonators ...

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Номер записи: 31
23-01-2020 дата публикации

Light-emitting device and light-emitting apparatus

Номер: US20200028325A1
Автор: Hidekazu Kawanishi, Hiroshi Nakajima, Jugo Mitomo, Masamichi Ito, Susumu Sato, Tatsushi Hamaguchi
Принадлежит: Sony Corp

A light-emitting device according to an embodiment of the present disclosure includes a laminate. The laminate includes an active layer, a first semiconductor layer, and a second semiconductor layer. The first semiconductor layer and the second semiconductor layer sandwich the active layer in between. The light-emitting device further includes a current confining layer, a concave-shaped first reflecting mirror provided on side of the first semiconductor layer, and a second reflecting mirror provided on side of the second semiconductor layer. The current confining layer has an opening. The first reflecting mirror and the second reflecting mirror sandwich the laminate and the opening in between. The light-emitting device further includes a first reflecting layer and a phosphor layer. The first reflecting layer is disposed at a position opposed to the first reflecting mirror with a predetermined gap in between. The phosphor layer is disposed between the first reflecting mirror and the first reflecting layer, and performs wavelength conversion on light leaking from the first reflecting mirror.

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Номер записи: 32
01-02-2018 дата публикации

Beam source having a laser diode

Номер: US20180034236A1
Автор: Sergey Khrushchev
Принадлежит: OSRAM GMBH

A beam source includes a laser diode having an emission surface for emitting a divergent beam, a carrier structure on which the laser diode is arranged such that the beam has, immediately downstream of the emission surface, a direction component parallel to a surface of the carrier structure that faces the laser diode, and a reflection prism with a transparent prism material having a refractive index n p ≧1.5. The diode and the prism are arranged relative to each other such that the beam from the diode is incident downstream on an entrance surface of the prism, travels through the prism material with a reduced aperture angle, and in the process is reflected away from the carrier structure at a reflection surface of the prism. The emission surface of the diode and the entrance surface of the prism have a distance from one another of at most 0.5 mm.

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Номер записи: 33
17-02-2022 дата публикации

LIGHT EMITTING DEVICE

Номер: US20220052506A1
Автор: MIURA Soichiro
Принадлежит: NICHIA CORPORATION

A light emitting device includes: a base member; a first semiconductor laser element disposed on an upper surface of the base member, wherein the first semiconductor laser element is configured to emit laser light from a first light emitting surface; a first light-reflecting member disposed on the upper surface of the base member, wherein the first light-reflecting member has a first light-reflecting surface configured to reflect the first laser light; a second semiconductor laser element disposed on the upper surface of the base member, wherein the second semiconductor laser element is configured to emit laser light from a second light emitting surface; and a second light-reflecting member disposed on the upper surface of the base member, wherein the second light-reflecting member has a second light-reflecting surface configured to reflect the second light. 1. A light emitting device comprising:a base member;a first semiconductor laser element disposed on an upper surface of the base member, wherein the first semiconductor laser element is configured to emit laser light from a first light emitting surface;a first light-reflecting member disposed on the upper surface of the base member, wherein the first light-reflecting member has a first light-reflecting surface configured to reflect the first laser light;a second semiconductor laser element disposed on the upper surface of the base member, wherein the second semiconductor laser element is configured to emit laser light from a second light emitting surface; anda second light-reflecting member disposed on the upper surface of the base member, wherein the second light-reflecting member has a second light-reflecting surface configured to reflect the second light; wherein:the first semiconductor laser element and the second semiconductor laser element are disposed such that the first light emitting surface and the second light emitting surface are parallel to each other;the first light-reflecting member and the second ...

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Номер записи: 34
04-02-2021 дата публикации

LIGHT CURTAIN SAFETY SYSTEM

Номер: US20210033747A1
Автор: Bashford David, Bashford Thomas W., Erickson Carsten Casey, Kare Jordin T., Nugent Thomas J.
Принадлежит:

A system to detect obstacles includes a power beam transmission circuit, a power beam reception circuit arranged to receive a power beam from the power beam transmission circuit, an emitter module, and a detector module arranged to distinguish between a first characteristic and a second characteristic. The emitter module includes a first emitter arranged to emit a first signal having the first characteristic, the first signal emitted in proximity to the power beam, and a second emitter arranged to emit a second signal having the second characteristic, the second characteristic different from the first characteristic, the second signal emitted in proximity to the first signal. The detector module includes a first detector arranged to respond to the first signal emitted by the first emitter, wherein the detector module is arranged to determine when an obstacle is in or near a line-of-sight transmission path between the first emitter and the first detector. 1. A system to detect obstacles , comprising:a power beam transmission circuit having one or more light sources to transmit a power beam;a power beam reception circuit arranged to receive the power beam from the power beam transmission circuit; a first emitter arranged to emit a first signal having a first characteristic, the first signal emitted in proximity to the power beam; and', 'a second emitter arranged to emit a second signal having a second characteristic, the second characteristic different from the first characteristic, the second signal emitted in proximity to the first signal; and, 'a plurality of emitters and a plurality of detectors that form a light curtain patterned about the power beam, the plurality of emitters surrounding the power beam having an emitter module including 'a first detector arranged to respond to the first signal emitted by the first emitter, wherein the detector module is arranged to determine a detection of an obstacle in a line-of-sight transmission path between the first ...

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Номер записи: 35
08-02-2018 дата публикации

Phosphor and light-emitting apparatus

Номер: US20180038575A1
Автор: Mitsuru Nitta, Nobuaki Nagao, Yasuhisa Inada
Принадлежит: Panasonic Intellectual Property Management Co Ltd

The phosphor according to an aspect of the present disclosure contains a crystal phase having a chemical composition Ce x Y y La 3-x-y Si 6 N 11 , where x and y satisfy 0<x≦0.6, and (1.5−x)≦y≦(3−x). The phosphor has an emission spectral peak within a wavelength range of 600 nm or more and 660 nm or less and a first excitation spectral peak within a wavelength range of 480 nm or more and 550 nm or less.

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Номер записи: 36
09-02-2017 дата публикации

Tunable laser source, optical transmitter, and optical transmitter and receiver module

Номер: US20170040775A1
Автор: Kazumasa Takabayashi, Tsuyoshi Yamamoto
Принадлежит: Fujitsu Ltd

A tunable laser source includes a mirror, a tunable filter, and a semiconductor optical amplifier integrated device including first, second, and third semiconductor optical amplifiers between a first end face facing toward the tunable filter and a second end face facing away from the first end face. The first amplifier is closer to the first end face than the second and third amplifiers. The semiconductor optical amplifier integrated device further includes a partially reflecting mirror and an optical divider that are disposed between the first amplifier and the second and third amplifiers. The partially reflecting mirror is closer to the first amplifier than the optical divider. The optical divider includes first and second branches connected to the second and third semiconductor optical amplifiers, respectively. The tunable filter and the first amplifier are disposed in an optical path between the partially reflecting mirror and the mirror that form a laser resonator.

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Номер записи: 37
15-02-2018 дата публикации

Light emitting element array and optical transmission device

Номер: US20180048125A1
Автор: Akemi Murakami, Jun Sakurai, Junichiro Hayakawa, Naoki Jogan, Takashi Kondo
Принадлежит: Fuji Xerox Co Ltd

A light emitting element array includes plural semiconductor stacking structures and a light screening portion. The plural semiconductor stacking structures each include a light emitting portion and a light receiving portion that receives light propagated in a lateral direction via a semiconductor layer from the light emitting portion. The light screening portion is provided between the plural semiconductor stacking structures to screen light directed from the light emitting portion of one of the semiconductor stacking structures to the light receiving portion of another semiconductor stacking structure.

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Номер записи: 38
03-03-2022 дата публикации

Laser Interferometer

Номер: US20220065612A1
Автор: Yamada Kohei
Принадлежит:

A laser interferometer includes a light source that emits first laser light, an optical modulator that includes a vibrator and modulates the first laser light by using the vibrator to generate second laser light including a modulated signal, a photodetector that receives interference light between third laser light including a sample signal generated by reflecting the first laser light on an object and the second laser light to output a light reception signal, a demodulation circuit that demodulates the sample signal from the light reception signal based on a reference signal, and a signal generator that outputs the reference signal input to the demodulation circuit and outputs a drive signal input to the optical modulator, in which Vd/Vr<10, where Vr is a voltage of the reference signal and Vd is a voltage of the drive signal. 1. A laser interferometer comprising:a light source that emits first laser light;an optical modulator that includes a vibrator and modulates the first laser light by using the vibrator to generate second laser light including a modulated signal;a photodetector that receives interference light between third laser light including a sample signal generated by reflecting the first laser light on an object and the second laser light to output a light reception signal;a demodulation circuit that demodulates the sample signal from the light reception signal based on a reference signal; anda signal generator that outputs the reference signal input to the demodulation circuit and outputs a drive signal input to the optical modulator, whereinVd/Vr<10, where Vr is a voltage of the reference signal and Vd is a voltage of the drive signal.2. The laser interferometer according to claim 1 , wherein Vd/Vr<2.3. The laser interferometer according to claim 1 , wherein the vibrator has a quartz crystal resonator.4. The laser interferometer according to claim 3 , wherein |f−f|≤3000 [Hz] claim 3 , where fis a resonance frequency of the quartz crystal resonator and ...

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Номер записи: 39
03-03-2022 дата публикации

Laser Interferometer and Control Method for Laser Interferometer

Номер: US20220065892A1
Автор: Yamada Kohei
Принадлежит:

A laser interferometer includes a light source that emits first laser light, an optical modulator that includes a vibrator and modulates the first laser light by using the vibrator to generate second laser light including a modulated signal, a photodetector that receives interference light between third laser light including a sample signal generated by reflecting the first laser light on an object and the second laser light to output a light reception signal, and a demodulation circuit that performs a demodulation process for demodulating the sample signal from the light reception signal, and the demodulation circuit intermittently performs the demodulation process. 1. A laser interferometer comprising:a light source that emits first laser light;an optical modulator that includes a vibrator and modulates the first laser light by using the vibrator to generate second laser light including a modulated signal;a photodetector that receives interference light between third laser light including a sample signal generated by reflecting the first laser light on an object and the second laser light to output a light reception signal; anda demodulation circuit that performs a demodulation process for demodulating the sample signal from the light reception signal, whereinthe demodulation circuit intermittently performs the demodulation process.2. The laser interferometer according to claim 1 , whereinthe vibrator is an element that generates simple vibration.3. The laser interferometer according to claim 2 , whereinthe vibrator has a piezoelectric element.4. The laser interferometer according to claim 2 , whereinthe vibrator has a MEMS vibration mirror.5. The laser interferometer according to claim 2 , whereinthe vibrator has a silicon resonator.6. The laser interferometer according to claim 2 , whereinthe vibrator has a quartz crystal resonator.7. The laser interferometer according to claim 1 , whereinthe vibrator is an element that has a light reflecting surface reflecting ...

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Номер записи: 40
23-02-2017 дата публикации

SPECIALIZED INTEGRATED LIGHT SOURCE USING A LASER DIODE

Номер: US20170051883A1
Автор: GOUTAIN ERIC, Raring James W., RUDY PAUL
Принадлежит:

The present invention provides a device and method for an integrated white colored electromagnetic radiation source using a combination of laser diode excitation sources based on gallium and nitrogen containing materials and light emitting source based on phosphor materials. In this invention a violet, blue, or other wavelength laser diode source based on gallium and nitrogen materials is closely integrated with phosphor materials, such as yellow phosphors, to form a compact, high-brightness, and highly-efficient, white light source. 1. An integrated white light source for a vehicle or other application using a beam of light , comprising:a laser diode device comprising a gallium and nitrogen containing material and configured as an excitation source;a phosphor wavelength converter member configured as an emitter and coupled to the laser diode device;a common support member configured to support the laser diode device and the phosphor member,a heat sink coupled to the common support member, the heat sink configured to transport thermal energy from the laser diode device and phosphor member on the common support member to the heat sink;a submount member configured with the laser diode device to form a chip on submount structure;an output facet configured to the laser diode device to output a laser beam of electromagnetic radiation from the output facet; the electromagnetic radiation being selected from a violet or a blue emission with a first wavelength ranging from 400 nm to 485 nm, the output beam being characterized by a wavelength range, a spectral width, a power, and a spatial configuration:a free space, within a vicinity of the common support member, with a non-guided characteristic capable of transmitting the laser beam from the laser diode device to the phosphor member; and the output laser beam of the laser device being optically coupled to at least one phosphor member;an angle of incidence configured between the laser beam the phosphor member, the phosphor ...

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Номер записи: 41
14-02-2019 дата публикации

Method and device for etching patterns inside objects

Номер: US20190051514A1
Автор: Edward Palanko, Mark Megela, Michael Vidra, Robert Vaccaro
Принадлежит: Tech Met Inc

Systems and methods for etching complex patterns on an interior surface of a hollow object are disclosed. A method generally includes positioning a laser system within the hollow object with a focal point of the laser focused on the interior surface, and operating the laser system to form the complex pattern on the interior surface. Motion of the laser system and the hollow object is controlled by a motion control system configured to provide rotation and/or translation about a longitudinal axis of one or both of the hollow object and the laser system based on the complex pattern, and change a positional relationship between a reflector and a focusing lens of the laser system to accommodate a change in distance between the reflector and the interior surface of the hollow object.

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Номер записи: 42
14-02-2019 дата публикации

Optical signal generation device and method and chip

Номер: US20190052046A1
Автор: Yin Wang
Принадлежит: Huawei Technologies Co Ltd

Embodiments of the present application provide an optical signal generation device. The device includes a laser, a first modulator, a second modulator, a first adjustment module, and a beam combiner. The laser is configured to: output a first optical signal to the first modulator, and output a second optical signal to the second modulator. The two modulators are separately configured to: receive an optical signal and a loaded electrical modulation signal, and modulate the optical signal based on the electrical modulation signal, to obtain a first modulated optical signal and a second modulated optical signal. The first adjustment module is further configured to adjust a phase of the modulated optical signal or an optical path to the beam combiner. The beam combiner is configured to: combine the first modulated optical signal obtained after the adjustment and the second modulated optical signal, and output a combined signal.

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Номер записи: 43
14-02-2019 дата публикации

Integrated wavelength locker

Номер: US20190052053A1
Автор: Erik Norberg, Gregory Alan Fish, Jared Bauters, John Parker, Jonathan Edgar Roth
Принадлежит: Juniper Networks Inc

Described are various configurations of integrated wavelength lockers including asymmetric Mach-Zehnder interferometers (AMZIs) and associated detectors. Various embodiments provide improved wavelength-locking accuracy by using an active tuning element in the AMZI to achieve an operational position with high locking sensitivity, a coherent receiver to reduce the frequency-dependence of the locking sensitivity, and/or a temperature sensor and/or strain gauge to computationally correct for the effect of temperature or strain changes.

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Номер записи: 44
21-02-2019 дата публикации

SPECTROSCOPY SYSTEM WITH LASER AND PULSED OUTPUT BEAM

Номер: US20190056266A1
Автор: Islam Mohammed N.
Принадлежит:

A spectroscopy system includes a light source having an input light source, including semiconductor diodes generating an input beam with a wavelength shorter than 2.5 microns. Cladding-pumped fiber amplifiers receive the input beam and form an amplified optical beam having a spectral width. A nonlinear element broadens the spectral width of the amplified optical beam to 100 nm or more through a nonlinear effect forming an output beam that is pulsed. A filter is coupled to at least one of a lens and a mirror that receives the output beam and delivers the filtered output beam to a sample. A detection system includes detectors configured to receive the output beam reflected or transmitted from the sample. The detection system is configured to use a lock-in technique with the pulsed output beam and the spectroscopy system is adapted to detect chemicals in the sample. 1. A spectroscopy system , comprising: an input light source, including one or more semiconductor diodes, configured to generate an input beam that comprises a wavelength shorter than 2.5 microns;', 'one or more optical amplifiers configured to receive at least a portion of the input beam and to form an amplified optical beam having a spectral width, wherein at least a portion of the one or more optical amplifiers comprises a cladding-pumped fiber amplifier; and', 'a nonlinear element configured to receive at least a portion of the amplified optical beam and to broaden the spectral width of the received amplified optical beam to 100 nm or more through a nonlinear effect forming an output beam, wherein the output beam is pulsed;, 'a light source comprisinga filter coupled to at least one of a lens and a mirror configured to receive at least a portion of the output beam, and to deliver at least a portion of the received output beam to a sample; anda detection system comprising one or more detectors configured to receive at least a part of the output beam reflected or transmitted from the sample, wherein the ...

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Номер записи: 45
01-03-2018 дата публикации

LASER PACKAGE HAVING MULTIPLE EMITTERS CONFIGURED ON A SUPPORT MEMBER

Номер: US20180058640A1
Автор: GOUTAIN ERIC, HUANG HUA, Raring James W., RUDY PAUL
Принадлежит:

A method and device for emitting electromagnetic radiation at high power using nonpolar or semipolar gallium containing substrates such as GaN, AlN, InN, InGaN, AlGaN, and AlInGaN, is provided. In various embodiments, the laser device includes plural laser emitters emitting green or blue laser light, integrated a substrate. 144.-. (canceled)45. A lighting system comprising:an apparatus comprising a white lighting device, a multi-colored lighting device, a flat panel device, a beam projector device, or a display device; a free space with a non-guided characteristic capable of transmitting the laser beam from each of the 1 to N laser diode devices;', 'an optical device configured to receive the laser beam from each of the 1 to N laser diode devices and to provide an output beam characterized by a selected wavelength range, a selected spectral width, a selected power, and a selected spatial configuration;', 'an output power characterizing the output beam, the output power being at least 0.5 W, at least 5 W, at least 50 W, at least 100 W, or at least 200 W;', 'a phosphor material optically coupled to the output beam;', 'a support member configured to transport thermal energy from the 1 to N laser diode devices to a heat sink;', 'a free space optics included in the optical device and configured to create one or more free space optical beams;', 'a thermal path from the 1 to N laser diode devices to the heat sink characterized by a thermal impedance; and', 'whereupon the output beam is characterized by an optical output power degradation of less than 20% in 500 hours when the 1 to N laser diode devices are operated at the output power and with a substantially constant input current at a base temperature of about 25 degrees Celsius., '1 to N laser diode devices configured to provide light for the apparatus, wherein N ranges from 2 to 50, at least one of the 1 to N laser diode devices comprises gallium and nitrogen, and each of the 1 to N laser diode devices is configured to ...

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Номер записи: 46
10-03-2022 дата публикации

METHOD OF MANUFACTURING OPTICAL MEMBER, OPTICAL MEMBER, AND LIGHT EMITTING DEVICE

Номер: US20220077650A1
Автор: SOGO Takayuki
Принадлежит: NICHIA CORPORATION

An optical member includes: a main body having transparency or heat dissipation properties; an optical film disposed on an upper face of the main body; a metal film disposed on the upper face of the main body in a region other than a region where the optical film is disposed; a surrounding part joined via the metal film; and a wavelength conversion part surrounded by the surrounding part. The wavelength conversion part is positioned inward of a periphery of the optical film in a top view. The wavelength conversion part is not directly bonded to the optical film and the main body. 1. An optical member comprising:a main body having transparency or heat dissipation properties;an optical film disposed on an upper face of the main body;a metal film disposed on the upper face of the main body in a region other than a region where the optical film is disposed;a surrounding part joined via the metal film; anda wavelength conversion part surrounded by the surrounding part,wherein the wavelength conversion part is positioned inward of a periphery of the optical film in a top view, andwherein the wavelength conversion part is not directly bonded to the optical film and the main body.2. The optical member according to claim 1 , wherein:the main body comprises sapphire as a main material.3. The optical member according to claim 1 , wherein:the optical film is configured to reflect light having a specific wavelength and transmit light having other wavelengths.4. The optical member according to claim 3 , wherein:the optical film is a DBR film.5. The optical member according to claim 1 , wherein:a thickness of the optical film is within a range of 2.0 μm to 5.0 μm.6. The optical member according to claim 3 , further comprising:an anti-reflective film disposed on a lower face of the wavelength conversion part.7. The optical member according to claim 6 , wherein:a thickness of the optical film is larger than a thickness of the anti-reflective film.8. The optical member according to ...

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Номер записи: 47
03-03-2016 дата публикации

SURFACE-EMITTING SEMICONDUCTOR LASER, SURFACE-EMITTING SEMICONDUCTOR LASER DEVICE, OPTICAL TRANSMISSION DEVICE, AND INFORMATION PROCESSING DEVICE

Номер: US20160064899A1
Автор: HAYAKAWA Junichiro, JOGAN Naoki, Kondo Takashi, MURAKAMI Akemi, SAKURAI Jun, TAKEDA Kazutaka
Принадлежит: FUJI XEROX CO., LTD.

Provided is a surface-emitting semiconductor laser including a substrate; a first semiconductor multilayer reflector of a first conductivity type formed on the substrate, the first semiconductor multilayer reflector including plural pairs of a low-refractive-index layer and a high-refractive-index layer; a cavity region formed on the first semiconductor multilayer reflector; a second semiconductor multilayer reflector of a second conductivity type formed on the cavity region, the second semiconductor multilayer reflector including plural pairs of a low-refractive-index layer and a high-refractive-index layer; a columnar structure extending from the second semiconductor multilayer reflector to the cavity region; and a current confinement layer formed inside the columnar structure by selective oxidation of a semiconductor layer containing Al. The cavity region includes an active region; and a cavity extension region interposed between the active region and the first semiconductor multilayer reflector. 1. A surface-emitting semiconductor laser comprising:a substrate;a first semiconductor multilayer reflector of a first conductivity type formed on the substrate, the first semiconductor multilayer reflector including a plurality of pairs of a low-refractive-index layer and a high-refractive-index layer;a cavity region formed on the first semiconductor multilayer reflector;a second semiconductor multilayer reflector of a second conductivity type formed on the cavity region, the second semiconductor multilayer reflector including a plurality of pairs of a low-refractive-index layer and a high-refractive-index layer;a columnar structure extending from the second semiconductor multilayer reflector to the cavity region; anda current confinement layer formed inside the columnar structure by selective oxidation of a semiconductor layer containing Al, an active region; and', 'a cavity extension region interposed between the active region and the first semiconductor multilayer ...

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Номер записи: 48
27-02-2020 дата публикации

DIAGNOSTIC SYSTEM WITH BROADBAND LIGHT SOURCE

Номер: US20200064189A1
Автор: Islam Mohammed N.
Принадлежит:

A diagnostic system is provided with a plurality of semiconductor light emitters, each configured to generate an optical beam, and a beam combiner to generate a multiplexed optical beam. An optical fiber or waveguide communicates at least a portion of the multiplexed optical beam to form an output beam, wherein the output beam is pulsed. A filter, coupled to at least one of a lens and a mirror to receive at least a portion of the output beam, forms an output light. A beam splitter splits the light into a sample arm and a reference arm and directs at least a portion of the sample arm light to a sample. A detection system is configured to receive from the sample at least a portion of reflected sample light, to generate a sample detector output, and to use a lock-in technique with the pulsed output beam. 1. A diagnostic system , comprising: an input light source, including one or more semiconductor diodes, configured to generate an input beam that comprises a wavelength shorter than 2.5 microns, and', 'one or more optical amplifiers configured to receive at least a portion of the input beam and form an amplified optical beam having a spectral width;, 'a light source comprisinga nonlinear element configured to receive at least a portion of the amplified optical beam and to broaden the spectral width of the received amplified optical beam to 100 nm or more through a nonlinear effect forming an output beam, wherein the output beam is pulsed;at least one of a lens and a mirror configured to receive at least a portion of the output beam;a filter coupled to the lens or the mirror and configured to form an output light; receive at least part of the output light,', 'split the received output light into a sample arm and a reference arm, and', 'direct at least a portion of the sample arm light to a sample;, 'a beam splitter configured to receive from the sample at least a portion of reflected sample light,', 'generate a sample detector output, and', 'use a lock-in technique with ...

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Номер записи: 49
27-02-2020 дата публикации

LIDAR SYSTEMS INCLUDING A GALLIUM AND NITROGEN CONTAINING LASER LIGHT SOURCE

Номер: US20200064476A1
Автор: McLaurin Melvin, Novotny Vlad, Raring James W., RUDY PAUL
Принадлежит:

The present disclosure provides a mobile machine including a laser diode based lighting system having an integrated package holding at least a gallium and nitrogen containing laser diode and a wavelength conversion member. The gallium and nitrogen containing laser diode is configured to emit a first laser beam with a first peak wavelength. The wavelength conversion member is configured to receive at least partially the first laser beam with the first peak wavelength to excite an emission with a second peak wavelength that is longer than the first peak wavelength and to generate the white light mixed with the second peak wavelength and the first peak wavelength. The mobile machine further includes a light detection and ranging (LIDAR) system configured to generate a second laser beam and manipulate the second laser beam to sense a spatial map of target objects in a remote distance. 188.-. (canceled)89. A distance detecting system comprising:a power source;a processor coupled to the power source and configured to supply power and generate a driving current;a gallium and nitrogen containing laser diode configured to be driven by the driving current to emit a first light with a first peak wavelength;a wavelength conversion member configured to receive at least partially the first light to reemit a second light with a second peak wavelength that is longer than the first peak wavelength and to combine a portion of the first light with the second light to produce a white light;the distance detecting system further comprising a first sensing light signal based on the first peak wavelength;one or more optical elements configured to direct at least partially the white light to illuminate one or more target objects or areas and to transmit respectively the first sensing light signal for sensing at least one remote point including the one or more target objects or areas and their surroundings; anda detector configured to detect reflected signals of the first sensing light ...

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Номер записи: 50
11-03-2021 дата публикации

Light emitting device including heat dissipation member

Номер: US20210071822A1
Автор: Teruhiko Noguchi, Toshio Akita, Yasuhisa Kotani
Принадлежит: Nichia Corp

A light emitting device includes: a light transmissive member having an upper face, a lower face, and at least one lateral face; a light reflecting member that surrounds the at least one lateral face of the light transmissive member, the light reflecting member being made of a ceramic that contains a plurality of pores; a heat dissipation member disposed under the light reflecting member and the light transmissive member, the heat dissipation member having light transmissivity; and a light emitting element disposed apart from the heat dissipation member in such a manner as to transmit light from the light emitting element through the heat dissipation member and the light transmissive member.

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Номер записи: 51
10-03-2016 дата публикации

Multiple-wavelength laser

Номер: US20160072255A1
Автор: Ashok V. Krishnamoorthy, Xuezhe Zheng
Принадлежит: Oracle International Corp

In a multiple-wavelength laser source, a multiple-mode laser outputs a set of wavelengths in a range of wavelengths onto an optical waveguide, where a spacing between adjacent wavelengths in the set of wavelengths is smaller than a width of channels in an optical link. Furthermore, a set of ring-resonator filters in the multiple-wavelength laser source, which are optically coupled to the optical waveguide, output corresponding subsets of the set of wavelengths for use in the optical link based on free spectral ranges and quality factors of the set of ring-resonator filters. These subsets may include one or more groups of wavelengths, with another spacing between adjacent groups of wavelengths that is larger than the width of the given channel in the optical link. In addition, the one or more groups of wavelengths may include one or more wavelengths, with the spacing between adjacent wavelengths in the given group of wavelengths.

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Номер записи: 52
08-03-2018 дата публикации

Atomic oscillator, and electronic apparatus

Номер: US20180069559A1
Автор: Koji Chindo, Yoshiyuki Maki
Принадлежит: Seiko Epson Corp

An atomic oscillator includes: an atomic cell in which an alkali metal is sealed; a light-emitting element that emits light to be radiated to the atomic cell; a light-receiving element that detects the light transmitted through the atomic cell; a first optical element that has light transmittance and is disposed between the atomic cell and the light-emitting element; and a second optical element that has light transmittance and is disposed between the first optical element and the atomic cell. The first optical element reflects the light from the light-emitting element toward the light-emitting element in a first direction inclined with respect to an optical axis of the light. The second optical element reflects the light from the light-emitting element toward the light-emitting element in a second direction inclined in a direction different from the first direction with respect to the optical axis of the light.

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Номер записи: 53
28-02-2019 дата публикации

LASER COMPONENT, USE OF A LASER COMPONENT, DEVICE HAVING LASER COMPONENT AND METHOD OF PRODUCING LASER COMPONENTS

Номер: US20190067898A1
Автор: HALBRITTER Hubert, Rossbach Georg
Принадлежит:

A laser component is provided which comprises: a surface emitting semiconductor laser configured to emit electromagnetic radiation along an emission axis, an optical element disposed downstream of the semiconductor laser along the emission axis, wherein the optical element comprises a diffractive structure, and a further optical element configured to cause radiation to be emitted asymmetrically with respect to the emission axis. Furthermore, the use of a laser component, a device having a laser component and a method for the production of laser components are provided 1. A laser component comprising:a surface emitting semiconductor laser configured for emitting electromagnetic radiation along an emission axis;an optical element disposed downstream of the semiconductor laser along the emission axis, wherein the optical element comprises a diffractive structure; anda further optical element configured to cause radiation to be emitted asymmetrically with respect to the emission axis.2. The laser component according to claim 1 ,wherein a main radiation direction of the laser component is oblique to the emission axis of the semiconductor laser.3. The laser component according to claim 1 ,wherein the further optical element is arranged downstream of the optical element along the emission axis.4. The laser component according to claim 1 ,wherein the further optical element partially covers a side surface of the surface emitting semiconductor laser.5. The laser component according claim 1 ,wherein the further optical element forms a side surface delimiting the laser component in the lateral direction.6. The laser component according to claim 5 ,wherein the further optical element has traces of material removal on the side surface of the laser component.7. The laser component according to claim 1 ,wherein the further optical element directly adjoins the optical element.8. The laser component according to claim 1 ,wherein the optical element is a binary diffractive optical ...

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Номер записи: 54
28-02-2019 дата публикации

Wavelength conversion element, light source device, and projector

Номер: US20190068936A1
Автор: Kunihiko Takagi, Tetsuo Shimizu
Принадлежит: Seiko Epson Corp

A wavelength conversion element includes a wavelength conversion layer having a first surface which excitation light enters, and a second surface opposed to the first surface, and adapted to perform wavelength conversion on the excitation light, a substrate disposed so as to be opposed to the second surface, and a bonding layer adapted to bond the wavelength conversion layer and the substrate to each other, and the bonding layer has a first bonding material disposed in a first region opposed to an incident area of the excitation light in the second surface, and a second bonding material disposed in at least a second region located on an outer periphery of the first region and lower in Young's modulus than the first bonding material.

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Номер записи: 55
16-03-2017 дата публикации

System and method of generating perceived white light

Номер: US20170074466A1
Автор: James Redpath, Richard Redpath
Принадлежит: Parhelion Corp

A system and method of generating perceived white light by laser. The system comprises a laser, a phosphoric substrate, and optionally a diffraction grating. In one embodiment, a blue laser beam from the laser penetrates the phosphoric substrate to create perceived white light in a Gaussian distribution appropriate for emergency lighting. In another embodiment, the blue laser beam is split into multiple beams by the diffraction grating. The multiple beams penetrate the phosphoric substrate to create perceived white light in a Gaussian distribution appropriate for emergency lighting.

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Номер записи: 56
07-03-2019 дата публикации

METHOD FOR REDUCING SELF-MIXING INTERFERENCE EFFECT OF LASER SYSTEM

Номер: US20190074659A1
Автор: GU Naiyou, Liu Hua, ZHU Jintong
Принадлежит:

The present invention discloses a method for reducing a self-mixing interference effect of a laser system, comprising the following step: connecting a direct current (DC) bias circuit and a modulated signal generator to electrodes of a laser, respectively. The DC bias circuit is configured to drive the laser and provide carriers for pumping to the laser; a resonant cavity is provided in the laser, and is configured to convert the carriers for pumping into photons which are subjected to stimulated radiation to form stable laser output; the DC bias circuit and the modulated signal generator are injected into the laser; the modulated signal generator outputs a modulated signal; and the modulated signal matches a parasitic parameter of the laser so as to change the distribution state of the photons in the resonant cavity of the laser. The present invention spatially and temporally reduces power fluctuation of a laser within a short period of time caused by the self-mixing interference effect, ensures the stability of the whole laser system, and has the advantages of low cost, easy assembly and adjustment, and stable performance. 22311. The method for reducing a self-mixing interference effect of a laser system according to claim 1 , wherein the parasitic parameter is a parasitic capacitance or a parasitic resistance; the DC bias circuit () and the modulated signal generator () are injected into the laser (); the modulated signal claim 1 , the parasitic capacitance claim 1 , and the parasitic resistance constitute a resonance relationship which is embodied as a chirp effect in terms of optical output; resonant cavity laser output modes are increased claim 1 , after a trace amount of returned light is applied to the laser claim 1 , the influence of the self-mixing interference effect in multiple modes on the laser is less than that of equivalent self-mixing interference effect in a single mode or a few modes claim 1 , and then the laser () outputs stable laser beams. ...

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Номер записи: 57
18-03-2021 дата публикации

Optoelectronic device and array thereof

Номер: US20210080761A1
Автор: Aaron John ZILKIE, Pradeep Srinivasan
Принадлежит: Rockley Photonics Ltd

An optoelectronic device and an array comprising a plurality of the same. The device(s) comprising: an optically active region with an electrode arrangement for applying an electric field across the optically active region; a first curved waveguide, arranged to guide light into the optically active region; and a second curved waveguide, arranged to guide light out of the optically active region; wherein the first curved waveguide and the second curved waveguide are formed of a material having a different band-gap from a band-gap of the optically active region, and wherein the overall guided path formed by the first curved waveguide, the optically active region and the second curved waveguide is U-shaped.

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Номер записи: 58
26-03-2015 дата публикации

STABILIZATION OF AN INJECTION LOCKED HARMONICALLY MODE-LOCKED LASER VIA POLARIZATION SPECTROSCOPY FOR FREQUENCY COMB GENERATION

Номер: US20150086151A1
Автор: Delfyett Peter J., Sarailou Edris, Williams Charles
Принадлежит: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.

Stabilization of an injection locked optical frequency comb is achieved through polarization spectroscopy of an active laser cavity, eliminating optical PM sidebands inherent in previous stabilization methods. Optical SNR of 35 dB is achieved. A monolithic AlInGaAs quantum well Fabry-Prot laser injection locked to a passively mode-locked monolithic laser is presented here. The FP laser cavity can be used as a true linear interferometric intensity modulator for pulsed light. 1. An optical frequency comb source producing a plurality of optical frequencies on a periodic frequency grid.2. The optical frequency comb source of claim 1 , where the periodicity of plurality of optical frequencies is tunable.3. The optical frequency comb source of claim 1 , wherein said optical frequency comb source is injection locked by a continuous wave laser.4. The optical frequency comb source of claim 1 , wherein said comb source comprises a phase locked loop to keep the optical frequency comb source locked to the input injection locking laser.5. An optical signal processing system claim 1 , comprising:An injection laser controlled by a by a variable optical attenuator, in optical connection with;An optical isolator coupled to a semiconductor optical amplifier and a light intensity modulator, and couplers for laser output and injection input.6. The system of claim 5 , wherein said system comprises a plurality of polarization controllers.7. The system of claim 5 , wherein said optical amplifier is a semiconductor optical amplifier.8. The system of claim 5 , wherein said system further comprises a polarization beam splitter and a balanced photodetector.9. An optical interferometer comprising an arc-sine phase modulator in one arm of the Interferometer.10. The optical interferometer of comprising a plurality of arc-sine phase modulators in one arm claim 9 , wherein each said “arc-sine” phase modulator has a different free running frequency (resonant frequency).11. A fabry perot laser ...

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Номер записи: 59
24-03-2016 дата публикации

Handheld, Low-Level Laser Apparatuses and Methods for Low-Level Laser Beam Production

Номер: US20160085079A1
Автор: Gerlitz Yonatan
Принадлежит:

A handheld, low-level laser apparatus includes a laser diode configured to generate a laser emission having an astigmatism. The apparatus further includes one or more corrective lens configured alone or in combination to correct the astigmatism and to collimate the laser emission, a divergence lens configured to diverge the laser emission after the laser emission passes through the one or more corrective lens, and a front lens configured to collimate the laser emission after the laser emission passes through the divergence lens. A low-level laser beam producing method includes repeatedly directing an IR laser emission through a series of lenses during a first set of time periods and repeatedly directing a visible laser emission through the series of lenses during a second set of time periods, each time period of the first set of time periods being distinct from each time period of the second set of time periods. 1. A handheld , low-level laser apparatus comprising:a laser diode configured to generate a near infrared (NIR) laser emission having an astigmatism and propagating along a laser path;one or more corrective lens positioned in the laser path and configured to receive the NIR laser emission therethrough, the one or more corrective lens being further configured alone or in combination to correct the astigmatism of the NIR laser emission and to collimate the NIR laser emission;a divergence lens positioned in the laser path after the one or more corrective lens and configured to receive the NIR laser emission therethrough and to diverge the NIR laser emission after the NIR laser emission passes through the one or more corrective lens; anda front lens positioned in the laser path after the divergence lens and configured to receive the NIR laser emission therethrough and to collimate the NIR laser emission after the NIR laser emission passes through the divergence lens.2. The apparatus of claim 1 , further comprising another laser diode claim 1 , the other laser ...

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Номер записи: 60
23-03-2017 дата публикации

Light communication device, light module, and method for coupling

Номер: US20170082906A1
Автор: Akira Ishii, Eiichi Kodera, Masaki Sugiyama, Norihisa Naganuma
Принадлежит: Fujitsu Optical Components Ltd

A light communication device further includes a rigid substrate, a package, and a flexible substrate. The rigid substrate includes a first terminal arranged on a surface thereof and a second terminal having a first hole opened at the surface. The package includes a third terminal and a fourth terminal being provided on a side wall thereof and being electrically coupled to a signal electrode and a ground electrode of the signal processor, respectively. The flexible substrate includes a fifth terminal and a sixth terminal being electrically coupled to the third terminal and the fourth terminal, respectively. The fifth terminal is electrically coupled to the first terminal on the surface, and the sixth terminal, with being placed into the first hole, is electrically coupled to the second terminal.

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Номер записи: 61
22-03-2018 дата публикации

OPTICAL MODULE FOR TERABIT SWITCH

Номер: US20180083417A1
Автор: Bulthuis Henk, Heck Susannah, Pezeshki Bardia, Rangarajan Suresh, Selim Ramsey, Soldano Lucas, Stokes Jamie, Ton Dinh, Yoffe Gideon
Принадлежит:

A switch module includes a switch integrated circuit (IC), a photonic integrated circuit (PIC), and a planar lightwave circuit (PLC). The PIC may include a plurality of light sources, an optical splitter, and a plurality of modulators. A dual MEMS may be used to align lens arrays, which may be used to couple light from the PIC to the PLC. 1. A switch module , comprising:a switch integrated circuit (IC) chip including a switch for routing inputs to outputs of the switch IC chip; a plurality of light sources for providing light;', 'an optical splitter having a plurality of inputs and outputs and for use in splitting the light provided by each of the plurality of light sources; and', 'a plurality of modulators for modulating light received from the plurality of outputs of the optical splitter and for providing modulated optical signals;, 'a photonic integrated circuit (PIC) comprisinga planar lightwave circuit (PLC) optically coupled to the PIC and positioned to receive the modulated optical signals, the PLC configured to combine the modulated signals into an optical output (or multiple outputs);wherein outputs of the switch IC chip are coupled to the plurality of optical outputs.2. The switch module of claim 1 , wherein the PIC further comprises semiconductor optical amplifiers (SOAs) claim 1 , each of the SOAs coupled to one of the plurality of modulators and positioned along a path of the one of the plurality of modulators.3. The switch module of claim 1 , wherein the plurality of light sources may be oriented perpendicular to the plurality of modulators.4. The switch module of claim 1 , wherein the PLC includes arrayed waveguide gratings (AWGs) and waveguides for routing the AWGs.5. The switch module of claim 4 , wherein the bends comprise silicon nitride material.6. The switch module of claim 1 , wherein only one of the plurality of light sources is activated at any given time.7. The switch module of claim 1 , wherein the optical splitter is a multimode ...

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Номер записи: 62
14-03-2019 дата публикации

Optical component, light emitting device using the optical component, and method of manufacturing the optical component

Номер: US20190081452A1
Автор: Masatsugu Ichikawa, Soichiro Miura, Takehito Shimatsu
Принадлежит: Nichia Corp

An optical component includes a wavelength converting member including a fluorescent part having an upper surface, a lower surface, and one or more lateral surfaces, and containing a fluorescent material, and a light-reflecting part adjacently surrounding the one or more lateral surfaces of the fluorescent part when viewed from above, and a light-transmissive member disposed below the wavelength converting member. A dielectric multilayer film is disposed on an upper surface of the light-transmissive member at least at a region facing the fluorescent part, the dielectric multilayer film is configured to transmit excitation light incident from below the light-transmissive member and to reflect fluorescent light emitted from the fluorescent part. Further, a space is formed between the fluorescent part and the dielectric multilayer film.

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Номер записи: 63
23-03-2017 дата публикации

LASER-CONTROLLED OPTICAL TRANSCONDUCTANCE VARISTOR SYSTEM

Номер: US20170084365A1
Автор: Nguyen Hoang T., Stuart Brent C.
Принадлежит:

An optical transconductance varistor system having a modulated radiation source configured to provide modulated stimulus, a wavelength converter operably connected to the modulated radiation source to produce a modulated stimulus having a predetermined wavelength, and a wide bandgap semiconductor photoconductive material in contact between two electrodes. The photoconductive material is operably coupled, such as by a beam transport module, to receive the modulated stimulus having the predetermined wavelength to control a current flowing through the photoconductive material when a voltage potential is present across the electrodes. 1. An optical transconductance varistor system comprising:a modulated radiation source configured to provide modulated stimulus;a wavelength converter operably connected to the modulated radiation source to produce a modulated stimulus having a predetermined wavelength; anda wide bandgap semiconductor photoconductive material in contact between two electrodes and operably coupled to receive the modulated stimulus having the predetermined wavelength to control a current flowing through the photoconductive material when a voltage potential is present across the electrodes.2. The system of claim 1 , wherein the predetermined wavelength produced by the wavelength converter corresponds to a bandgap energy of the wide bandgap semiconductor material.3. The system of claim 1 , further comprising:a beam pump surrounding the photoconductive material for directing the modulated stimulus into the photoconductive material; andan optical diffusion element arranged to diffuse/disperse the modulated stimulus prior to entering the beam pump and the photoconductive material.4. The system of claim 3 , wherein the optical diffusion element is a tapered light pipe.5. The system of claim 1 , wherein the modulated radiation source is a modulated laser.6. The system of claim 5 ,wherein the modulated laser is a multi-emitter laser-diode array.7. The system of ...

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Номер записи: 64
02-04-2015 дата публикации

COMPACT LASER SOURCE FOR ACTIVE ILLUMINATION FOR HYBRID THREE-DIMENSIONAL IMAGERS

Номер: US20150092258A1
Автор: HERSCHBACH Norbert, Kaiser Jean-Luc
Принадлежит:

The invention generally relates to hybrid three-dimensional imagers and to a laser source for active illumination for hybrid three-dimensional imagers (i.e. 3D imagers that make combined use of different 3D imaging technologies). The invention is applicable to three-dimensional imaging systems which use a combination of different imaging techniques (hybrid technologies) to achieve a higher precision or a higher level of reliability. 1. A hybrid three-dimensional imaging instrument , comprising a laser based illumination source including an array of individual Vertical Cavity Surface Emitting Laser (VCSEL) and a switchable diffuser mounted in front of said array of VCSELs , said switchable diffuser being configured to be switchable between a structured-light mode , in which said diffuser is essentially transparent , and a diffuse operation mode , in which said diffuser generates a smooth and unstructured illumination field.2. (canceled)3. (canceled)4. The hybrid three-dimensional imaging instrument according to claim 1 , wherein said illumination source further comprises a monolithically integrated switching circuit claim 1 , said monolithically integrated switching circuit being arranged close to said array of VCSELs and configured for fast current switching or modulation of each individual VCSEL claim 1 , groups of VCSELs or the VCSEL array as a whole claim 1 , for more efficient claim 1 , flexible and precise modulation of the light field required for the time-of-flight technique.5. The hybrid three-dimensional imaging instrument according to claim 1 , wherein integration of the required transistors is realized either directly within the laser array chip or within a dedicated second chip to which the laser array chip is connected using a flip-chip technique.6. The hybrid three-dimensional imaging instrument according to claim 1 , wherein said illumination source is configured for generating structured light field for the structured-light technique by encoding a ...

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Номер записи: 65
25-03-2021 дата публикации

OPTICAL MODULATOR AND BEAM STEERING SYSTEM INCLUDING THE SAME

Номер: US20210088812A1
Автор: JEONG Byunggil, KIM Sunil, LEE Duhyun, PARK Junghyun
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Provided is an optical modulator including a plurality of unit cells, an active layer including a plurality of refractive index changing areas that are separated from each other, each of the plurality of refractive index changing areas having a refractive index that changes based on an electrical signal applied thereto, a plurality of antenna patterns provided over the active layer, and a mirror layer provided under the active layer opposite to the plurality of antenna patterns. 1. An optical modulator comprising:a plurality of unit cells;an active layer comprising a plurality of refractive index changing areas that are separated from each other, each of the plurality of refractive index changing areas having a refractive index that changes based on an electrical signal applied thereto;a plurality of antenna patterns provided over the active layer; anda mirror layer provided under the active layer opposite to the plurality of antenna patterns.2. The optical modulator of claim 1 , wherein a distance between adjacent refractive index changing areas of the plurality of refractive index changing areas is within a range of 0.1 μm to 0.5 μm.3. The optical modulator of claim 1 , wherein a distance between adjacent refractive index changing areas of the plurality of refractive index changing areas is equal to or less than a size of each of the plurality of refractive index changing areas.4. The optical modulator of claim 3 , wherein the distance between adjacent refractive index changing areas of the plurality of refractive index changing areas is less than a width of each of the plurality of refractive index changing areas.5. The optical modulator of claim 4 , wherein the distance between adjacent refractive index changing areas of the plurality of refractive index changing areas is less than ½ of the width of each of the plurality of refractive index changing areas.6. The optical modulator of claim 1 , wherein a distance between adjacent refractive index changing areas of ...

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Номер записи: 66
31-03-2016 дата публикации

OPTICAL BRIDGE

Номер: US20160091665A1
Автор: Jones Haydn Frederick, Rickman Andrew George, Zilkie Aaron
Принадлежит:

An optical bridge for switching between a plurality of electrical chips, the optical bridge comprising: a passive optical router; and a plurality of Bridge Interface Chips optically connected to the passive optical router; each Bridge Interface Chip being connectable to one of the plurality of electrical chips to form a connection between that electrical chip and the passive optical router at which electrical signals from the electrical chip are converted into wavelength tunable modulated optical signals for transmission to the passive optical router and at which an optical signals from the passive optical router are converted into electrical signals to be received by the electrical chip; wherein each Bridge Interface Chip includes a wavelength tunable laser input and a modulator for modulating the wavelength tunable laser input to provide the wavelength tunable modulated optical signals. 1. An optical bridge for switching between a plurality of electrical chips , the optical bridge comprising:a passive optical router, an optical path through which is wavelength dependent; anda plurality of Bridge Interface Chips optically connected to the passive optical router; each Bridge Interface Chip being connectable to one of the plurality of electrical chips to form a connection between that electrical chip and the passive optical router;each Bridge Interface Chip including a wavelength tunable laser input and a modulator configured to convert electrical signals from the electrical chip into wavelength tunable modulated optical signals for transmission to the passive optical router; andeach Bridge Interface Chip including a photodiode configured to convert optical signals from the passive optical router into electrical signals to be received by the electrical chip.2. The optical bridge of claim 1 , wherein an output port of the passive optical router is directly optically connected to an input port of a Bridge Interface Chip of the plurality of Bridge Interface Chips.3. The ...

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Номер записи: 67
29-03-2018 дата публикации

Wavelength conversion element, light source device, and projector

Номер: US20180090905A1
Автор: Tetsuo Shimizu
Принадлежит: Seiko Epson Corp

A wavelength conversion element includes a substrate; a wavelength conversion portion that converts incident light of a first wavelength into light of a second wavelength different from the light of the first wavelength; and a bonding material that bonds the substrate and the wavelength conversion portion. The wavelength conversion portion includes a first surface on which the light of the first wavelength is incident, and a second surface that is positioned on a side opposite to the first surface. The bonding material bonds the substrate and the second surface of the wavelength conversion portion, and forms a bonding region inside the second surface. The wavelength conversion portion is configured such that an irradiation region irradiated with the light of the first wavelength is set on the first surface inside the bonding region.

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Номер записи: 68
05-05-2022 дата публикации

CRI-BOOSTER WHITE LASER FIBER SOURCE

Номер: US20220140565A1
Автор: Dore Renald, Jones Carlton S.
Принадлежит:

In one aspect, an optical system for delivering light into an optical fiber is disclosed, which comprises a phosphor-converted white light source for generating white light, a red light emitting diode (LED) for generating red light, and a light-delivery system for delivering at least a portion of said white light and said red light into an input port of an optical fiber.

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Номер записи: 69
07-04-2016 дата публикации

183NM Laser And Inspection System

Номер: US20160099540A1
Автор: Armstrong J. Joseph, Chuang Yung-Ho Alex, Deng Yujun, Dribinski Vladimir, Fielden John, Zhang Jidong
Принадлежит:

A laser assembly for generating laser output light at an output wavelength of approximately 183 nm includes a fundamental laser, an optical parametric system (OPS), a fifth harmonic generator, and a frequency mixing module. The fundamental laser generates fundamental light at a fundamental frequency. The OPS generates a down-converted signal at a down-converted frequency. The fifth harmonic generator generates a fifth harmonic of the fundamental light. The frequency mixing module mixes the down-converted signal and the fifth harmonic to produce the laser output light at a frequency equal to a sum of the fifth harmonic frequency and the down-converted frequency. The OPS generates the down-converted signal by generating a down-converted seed signal at the down-converted frequency, and then mixing the down-converted seed signal with a portion of the fundamental light. At least one of the frequency mixing, frequency conversion or harmonic generation utilizes an annealed, deuterium-treated or hydrogen-treated CLBO crystal. 1. A laser assembly for generating laser output light having an output wavelength in the range of approximately 180 nm and approximately 185 nm , the laser assembly comprising:a fundamental laser configured to generate fundamental light having a fundamental frequency;an optical parametric system (OPS) coupled to the fundamental laser such that said OPS receives a first portion of the fundamental light, and said OPS is configured to generate a down-converted signal having a down-converted frequency that is less than the fundamental frequency;a fifth harmonic generator coupled to the fundamental laser such that the fifth harmonic generator receives a second portion of the fundamental light, and said fifth harmonic generator is configured to generate fifth harmonic light having a fifth harmonic frequency equal to five times the fundamental frequency; anda frequency mixing module that is optically coupled to receive the down-converted signal from the OPS ...

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Номер записи: 70
16-04-2015 дата публикации

Light source apparatus

Номер: US20150103554A1
Автор: Hiroyuki Kamee, Kazuaki Tamura, Masahiro Nishio
Принадлежит: Olympus Corp

A light source apparatus includes a light conversion unit converting primary light into secondary light. The light conversion unit includes a light conversion member, a holder and a reflection member. The holder includes an incidence portion through which the primary light enters and an exit portion through which at least part of the secondary light exits in a direction crossing an optical axis of the primary light. The light conversion member is arranged on the optical axis of the primary light. Part of the secondary light allowed to exit from the light conversion member in a direction different from a direction toward the exit portion is reflected by the reflection member and exited from the exit portion. The ratio of reentering to the light conversion member is reduced.

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Номер записи: 71
06-04-2017 дата публикации

SEMICONDUCTOR LIGHT EMITTING DEVICE AND OPTICAL TRANSCEIVER

Номер: US20170098922A1
Автор: Arakawa Yasuhiko, HATORI Nobuaki, ISHIZAKA Masashige, Iwamoto Satoshi, SHIMIZU Takanori, Tanabe Katsuaki
Принадлежит:

A semiconductor light source includes a substrate, an optical waveguide having a reflection structure provided on the substrate with an oxide film in between and a semiconductor light emitting element provided on the optical waveguide. The optical waveguide includes a constant width core layer portion located in a center portion, tapered core layer portions that are provided on either side of the constant width core layer and of which the core width gradually increases and a constant width core layer portion for an optical wire waveguide. The semiconductor light emitting element is placed so as to cover at least a portion of the tapered core layer portions on both sides. 1. A semiconductor light source , comprising:a substrate;an optical waveguide having a reflection structure provided on the substrate with an oxide film between the optical waveguide and the substrate; anda semiconductor light emitting element provided on the optical waveguide, whereinthe optical waveguide comprises: a constant width core layer portion located in a center portion; tapered core layer portions that are provided on either side of the constant width core layer and of which the core width gradually increases; and a constant width core layer portion for an optical wire waveguide, andthe semiconductor light emitting element is placed so as to cover at least a portion of the tapered core layer portions on both sides.2. The semiconductor light source according to claim 1 , wherein the reflection structure is a side diffraction grating formed in a region that is not covered by the semiconductor light emitting element.3. The semiconductor light source according to claim 1 , wherein the reflection structure is a side diffraction grating provided on a side of the constant width core layer portion located in the center portion.4. The semiconductor light source according to claim 1 , wherein the reflection structure comprises: a side diffraction grating provided only in a region that is not ...

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Номер записи: 72
12-05-2022 дата публикации

WAVELENGTH CONVERSION PART, METHOD OF MANUFACTURING WAVELENGTH CONVERSION PART, AND LIGHT EMITTING DEVICE

Номер: US20220149252A1
Автор: HARA Akinori, YAMASHITA Toshiaki
Принадлежит: NICHIA CORPORATION

A wavelength conversion part includes: a wavelength conversion member formed primarily of a ceramic material; an enclosing member formed primarily of a ceramic material, wherein the enclosing member surrounds one or more lateral faces of the wavelength conversion member; and a heat dissipating member having an upper face, wherein the heat dissipating member is fixed to the wavelength conversion member, and wherein the upper face of the heat dissipating member opposes lower faces of the wavelength conversion member and enclosing member. The lower face of the wavelength conversion member projects towards the heat dissipating member beyond the lower face of the enclosing member. A portion of the lower face of the enclosing member is separated from the upper face of the heat dissipating member by an air gap. 1. A wavelength conversion part comprising:a wavelength conversion member formed primarily of a ceramic material, wherein the wavelength conversion member has a lower face and one or more lateral faces;an enclosing member formed primarily of a ceramic material, wherein the enclosing member has a lower face, wherein the enclosing member surrounds the one or more lateral faces of the wavelength conversion member; anda heat dissipating member having an upper face, wherein the heat dissipating member is fixed to the wavelength conversion member, and wherein the upper face of the heat dissipating member opposes the lower face of the wavelength conversion member and the lower face of the enclosing member;wherein the lower face of the wavelength conversion member projects towards the heat dissipating member beyond the lower face of the enclosing member; andwherein a portion of the lower face of the enclosing member is separated from the upper face of the heat dissipating member by an air gap.2. The wavelength conversion part according to claim 1 , wherein:an entirety of the lower face of the enclosing member is separated from the upper face of the heat dissipating member.3 ...

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Номер записи: 73
28-03-2019 дата публикации

Lighting device

Номер: US20190097092A1
Автор: Kazuyuki Yamae
Принадлежит: Panasonic Intellectual Property Management Co Ltd

A lighting device includes a laser light source that emits laser light, a wavelength converter that converts a wavelength of the laser light and emits wavelength-converted light, and a linear light guide that is elongated and guides the wavelength-converted light emitted by the wavelength converter and introduced through a longitudinal end surface. The linear light guide includes a lateral surface that emits the wavelength-converted light guided by the linear light guide. A proportion of the wavelength-converted light emitted by the lateral surface gradually increases with an increase in optical path length in the linear light guide.

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Номер записи: 74
12-05-2022 дата публикации

LASER DEVICE AND LIGHT GUIDE MEMBER USED WITH THE SAME

Номер: US20220149586A1
Автор: CHAO Chih-Wei, Chen Hui, HSU Chen-Ke, LI Xinglong, LIAO CHI-WEI, SHI JUNPENG, WONG Weng-Tack
Принадлежит:

The laser device includes a substrate, a laser element disposed on the substrate for emitting a laser light ray, a light guide member disposed on the substrate, and a wavelength conversion layer. The light guide member is light-transmissible and thermally conductive, and has at least one reflection surface for reflecting the laser light ray from the laser element so as to change travelling direction of the laser light ray. The wavelength conversion layer converts wavelength of the laser light ray from the light guide member to result in a laser beam, and contacts the light guide member so that heat from the wavelength conversion layer is transferred to the substrate through the light guide member. 1. A laser device comprising:a substrate;a plurality of laser elements that are disposed on said substrate and that are adapted for emitting laser light rays;a light guide member that is disposed on said substrate, that is light-transmissible and thermally conductive, and that has a plurality of reflection surfaces for reflecting the laser light rays from said laser elements so as to change travelling direction of the laser light rays; anda wavelength conversion layer that is adapted to convert wavelengths of the laser light rays from said light guide member to result in a plurality of laser beams.2. The laser device as claimed in claim 1 , wherein said light guide member has a light transmittance that is not less than 80% when said light guide member has a thickness of 1 mm.3. The laser device as claimed in claim 1 , wherein said light guide member is made of a material selected from the group consisting of silicon dioxide claim 1 , sapphire claim 1 , ceramic claim 1 , and combinations thereof.4. The laser device as claimed in claim 1 , wherein said light guide member further has a light-exit surface through which the laser light rays exit said light guide member; and said wavelength conversion layer is disposed on said light-exit surface.5. The laser device as claimed in ...

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Номер записи: 75
28-03-2019 дата публикации

MODULATED LIGHT SOURCE

Номер: US20190097383A1
Автор: AKIYAMA Tomoyuki
Принадлежит:

A modulated light source includes a reflective semiconductor optical amplifier including a mirror at a first end of the reflective semiconductor optical amplifier, a modulator configured to modulate a central wavelength, a first mirror configured to reflect light transmitted by the modulator, an optical filter disposed between a second end of the reflective semiconductor optical amplifier and the modulator, and a second mirror configured to reflect part of incoming light and to transmit the other part of the incoming light. The reflective semiconductor optical amplifier, the optical filter, and the second mirror configure a Fabry-Perot laser. The first mirror is configured to feed light emitted from the Fabry-Perot laser back to the Fabry-Perot laser, and the modulated light source is configured to select light corresponding to one of longitudinal modes oscillated by the Fabry-Perot laser, to modulate the selected light, and to output the modulated light. 1. A modulated light source comprising:a reflective semiconductor optical amplifier including a mirror provided at a first end of the reflective semiconductor optical amplifier;a modulator configured to modulate a central wavelength;a first mirror configured to reflect light transmitted by the modulator;an optical filter disposed between a second end of the reflective semiconductor optical amplifier and the modulator; anda second mirror configured to reflect part of incoming light and to transmit another part of the incoming light;wherein a Fabry-Perot laser is configured by the reflective semiconductor optical amplifier, the optical filter, and the second mirror,the first mirror is configured to feed light emitted from the Fabry-Perot laser back to the Fabry-Perot laser, andthe modulated light source is configured to selectively modulate light corresponding to one of longitudinal modes oscillated by the Fabry-Perot laser, and to output the modulated light.2. The modulated light source according to claim 1 , ...

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Номер записи: 76
28-03-2019 дата публикации

WAVELENGTH-STABILIZED SEMICONDUCTOR LASER SOURCE

Номер: US20190097385A1
Автор: Blauvelt Henry A.
Принадлежит:

A semiconductor laser source includes a partial-grating DFB laser with two laser electrodes, one over the grating and the other between the grating and one end of the laser. Constant laser currents flow into the waveguide through the electrodes (typically different from each other) and produce laser output. A wavelength discriminator, an optical detector, and a wavelength-control circuit act as a wavelength-control feedback mechanism to generate a wavelength control current that flows through one laser electrode or the other, or through both electrodes with opposite polarities. Phase noise on the laser output can be reduced at modulation frequencies exceeding several hundred kHz up to one or several tens of MHz or more. The laser-wavelength can be swept while exhibiting reduced phase noise. 1. A semiconductor laser source comprising:(a) a semiconductor substrate;(b) an optical waveguide formed on the substrate and arranged so as to provide position-dependent optical gain or loss, for an optical signal that propagates along the waveguide within an operating wavelength range of the laser source, that varies according to a position-dependent level of electrical current density flowing into or out of the optical waveguide;(c) an optical reflector arranged on the substrate or waveguide so as to reflect, to propagate along the optical waveguide in a forward direction, at least a portion of an optical signal propagating along the waveguide in a rearward direction within the operating wavelength range;(d) an optical grating arranged on the substrate or waveguide so as to diffract, to propagate in the rearward direction along the waveguide toward the reflector, at least a portion of an optical signal propagating along the waveguide in the forward direction within the operating wavelength range, wherein the waveguide, reflector, and grating define a laser resonator arranged so that laser output from the laser resonator propagates (i) in the forward direction from the grating ...

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Номер записи: 77
12-04-2018 дата публикации

Integrated wavelength locker

Номер: US20180102627A1
Автор: Erik Norberg, Gregory Alan Fish, Jared Bauters, John Parker, Jonathan Edgar Roth
Принадлежит: Juniper Networks Inc

Described are various configurations of integrated wavelength lockers including asymmetric Mach-Zehnder interferometers (AMZIs) and associated detectors. Various embodiments provide improved wavelength-locking accuracy by using an active tuning element in the AMZI to achieve an operational position with high locking sensitivity, a coherent receiver to reduce the frequency-dependence of the locking sensitivity, and/or a temperature sensor and/or strain gauge to computationally correct for the effect of temperature or strain changes.

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Номер записи: 78
13-04-2017 дата публикации

OPTICAL MODULE

Номер: US20170104310A1
Автор: YANG Shihai, ZHANG QIANG, ZHAO Qisheng
Принадлежит:

The present disclosure relates to the field of optical communication, particularly to an optical module. An optical module according to embodiments of the disclosure includes: a laser device including an emission region, and a modulation region to which light emitted by the emission region is transmitted; a bias circuit connected with the emission region, configured to drive the emission region to emit light at stable optical power; a modulation circuit connected with the modulation region, configured to drive the modulation region, so that the modulation region varies the optical power of the light emitted from the emission region; and a semiconductor optical amplifier configured to receive the light from the modulation region, and to vary the optical power of the light. 1. An optical module , comprising:a laser device comprising an emission region, and a modulation region to which light emitted by the emission region is transmitted;a bias circuit connected with the emission region, configured to drive the emission region to emit light at stable optical power;a modulation circuit connected with the modulation region, configured to drive the modulation region, so that the modulation region varies the optical power of the light emitted from the emission region; anda semiconductor optical amplifier configured to receive the light from the modulation region, and to vary the optical power of the light emitted from the modulation region.2. The optical module according to claim 1 , wherein the modulation circuit receives a first amplitude-varying signal from a system end claim 1 , converts the received first amplitude-varying signal into a first driving signal claim 1 , and outputs the first driving signal to drive the modulation region.3. The optical module according to claim 2 , wherein the modulation region is driven by a current signal claim 2 , and the first driving signal is a current signal.4. The optical module according to claim 2 , wherein the modulation region ...

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Номер записи: 79
26-03-2020 дата публикации

Manufacturable laser diode formed on c-plane gallium and nitrogen material

Номер: US20200099196A1
Автор: Alexander Sztein, James W. RARING, Melvin McLaurin, Po Shan Hsu
Принадлежит: Soraa Laser Diode Inc

A method for manufacturing a laser diode device includes providing a substrate having a surface region and forming epitaxial material overlying the surface region, the epitaxial material comprising an n-type cladding region, an active region comprising at least one active layer overlying the n-type cladding region, and a p-type cladding region overlying the active layer region. The epitaxial material is patterned to form a plurality of dice, each of the dice corresponding to at least one laser device, characterized by a first pitch between a pair of dice, the first pitch being less than a design width. Each of the plurality of dice are transferred to a carrier wafer such that each pair of dice is configured with a second pitch between each pair of dice, the second pitch being larger than the first pitch.

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Номер записи: 80
19-04-2018 дата публикации

Lighting apparatus

Номер: US20180106449A1
Автор: Hideharu Kawachi, Sachiko AZUMA, Shinichi Kitaoka
Принадлежит: Panasonic Intellectual Property Management Co Ltd

A lighting apparatus includes a holder that holds an optical fiber, a wavelength converter that wavelength-converts laser light emitted from the optical fiber, and a case that is made of metal, holds the wavelength converter, and houses the holder. The holder includes a main body having a lead end face from which the laser light is emitted, and a flange projecting from an outer circumferential face of a base end of the main body. The case has a through hole penetrating from one end face to another end face, and the wavelength converter is attached to the case to be coaxial with the through hole. The through hole houses the main body, and has an abutting face which the lead end face of the main body abuts. The flange is secured to the case in a state where the lead end face of the main body abuts the abutting face.

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Номер записи: 81
02-06-2022 дата публикации

OPTICAL SYSTEM AND METHOD FOR LOCKING A WAVELENGTH OF A TUNABLE LASER

Номер: US20220173572A1
Автор: KOCH Brian R., Roth Jonathan Edgar
Принадлежит:

An optical system can lock a wavelength of a tunable laser to a specified wavelength of a temperature-insensitive spectral profile of a spectral filter. In some examples, the spectral filter, such as a Fabry-Perot filter, can have a temperature-insensitive peak wavelength and increasing attenuation at wavelengths away from the peak wavelength. The spectral filter can spectrally filter the laser light to form filtered laser light. A detector can detect at least a fraction of the filtered laser light. Circuitry coupled to the detector and the laser can tune the tunable laser to set a signal from the detector to a specified value corresponding to a specified wavelength in the spectral profile, and thereby adjust the selectable wavelength of the tunable laser to match the specified wavelength. In some examples, the optical system can include a polarization rotator, and can use polarization to separate incident light from return light. 1. An optical system , comprising:a tunable laser to generate light at a selectable wavelength;a splitter that forms a output light and a split light portion from the light;an interference based optical filter that filters the split light portion to form a filtered light, the interference based optical filter having a peak wavelength at which an output of the interference based optical filter attenuates at wavelengths away from the peak wavelength;a detector to detect the filtered light; andcontrol circuitry to lock a wavelength of the output light to match the peak wavelength of the interference based optical filter by changing the selectable wavelength of the tunable laser such that a signal that is generated by the detector from the filtered light is at a maximum.2. The optical system of claim 1 , wherein the interference based optical filter is a Fabry-Perot optical filter.3. The optical system of claim 1 , wherein the interference based optical filter comprises a first reflective surface claim 1 , a second reflective surface claim 1 , ...

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Номер записи: 82
09-06-2022 дата публикации

Wavelength converter; and light emitting device, medical system, electronic apparatus, and inspection method using same

Номер: US20220175250A1
Автор: Mitsuru Nitta, Shozo Oshio, Takeshi Abe
Принадлежит: Panasonic Intellectual Property Management Co Ltd

A wavelength converter includes a first phosphor activated with Cr3+; and a second phosphor activated with at least one ion of Ce3+ or Eu2+. A fluorescence spectrum of a fluorescence emitted by the second phosphor has a peak where a fluorescence intensity shows a maximum value in a wavelength range of 500 nm or more to less than 580 nm. The wavelength converter emits a fluorescence having a light component over an entire range of 500 nm or more to less than 580 nm. The wavelength converter emits a light having a spectrum in which a ratio of a minimum light emission intensity to a maximum light emission intensity is 40% or less in a wavelength range of 550 nm or more to 700 nm or less.

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Номер записи: 83
11-04-2019 дата публикации

OPTICAL MODULE

Номер: US20190107739A1
Автор: FUJIMURA Yasushi, Misawa Taichi, Yamaji Kazuhiro
Принадлежит:

An optical module including a source assembly is disclosed. The source assembly provides a semiconductor optical device, a wiring substrate, and a bridge substrate. The semiconductor optical device includes an electrode and a pad that receives a driving signal therethrough. The wiring substrate, which is arranged side by side with respect to the semiconductor optical device, provides a signal line and a ground line surrounding the signal line. The bridge substrate includes a signal line and a ground line surrounding the signal line. A feature of the optical module is that the bridge substrate is placed on the semiconductor optical device and the wiring substrate such that a transmission line thereof faces the semiconductor optical device and the wiring substrate, and one end of the signal line thereof is connected with the pad of the semiconductor optical device through a post, and another end of the signal line thereof is connected with an end of the signal line in the wiring substrate through another post. 1. An optical module comprising:a semiconductor optical device that provides an electrode for an optical modulator and a pad, the electrode receiving a modulation signal through the pad;a wiring substrate arranged side by side with respect to the semiconductor optical device, the wiring substrate providing a transmission line carrying the modulation signal to the semiconductor optical device, the transmission line including a signal line and a ground metal surrounding the signal line;a bridge substrate that provides a transmission line that includes a signal line carrying the modulation signal to the semiconductor optical device and a ground metal surrounding the signal line of the bridge substrate, the bridge substrate being disposed on the semiconductor optical device and the wiring substrate as the transmission line thereof faces the transmission line of the wiring substrate and the pad of the semiconductor optical device;wherein the signal line of the bridge ...

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Номер записи: 84
28-04-2016 дата публикации

PHOTONIC INTERFACE FOR ELECTRONIC CIRCUIT

Номер: US20160116688A1
Автор: Hochberg Michael J., Magill Peter D., Novack Ari Jason
Принадлежит:

A photonic interface for an electronic circuit is disclosed. The photonic interface includes a photonic integrated circuit having a modulator and a photodetector, and an optical fiber or fibers for optical communication with another optical circuit. A modulator driver chip may be mounted directly on the photonic integrated circuit. The optical fibers may be placed in v-grooves of a fiber support, which may include at least one lithographically defined alignment feature for optical alignment to the silicon photonic circuit. 1. A photonic interface assembly for an electronic circuit , the photonic interface assembly comprising:a first electrical port for receiving a first electrical signal from the electronic circuit, and a second electrical port for coupling a second electrical signal to the electronic circuit;at least one optical fiber for outputting a first optical signal, receiving a second optical signal, or both outputting the first optical and receiving the second optical signal; an optical modulator for modulating an optical carrier wave with the first electrical signal to provide the first optical signal, and', 'a photodetector for providing the second electric signal in response to the second optical signal; and, 'a photonic integrated circuit comprisinga fiber support attached to the photonic integrated circuit and supporting the at least one optical fiber.2. The photonic interface assembly of claim 1 , wherein the fiber support comprises at least one groove supporting the at least one optical fiber.3. The photonic interface assembly of claim 1 , wherein the at least one optical fiber comprises a first optical fiber optically coupled to the optical modulator for outputting the first optical signal claim 1 , and a second optical fiber optically coupled to the photodetector for inputting the second optical signal.4. The photonic interface assembly of claim 1 , wherein the photonic integrated circuit comprises a silicon photonic chip.5. The photonic interface ...

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Номер записи: 85
13-05-2021 дата публикации

ENDOSCOPE SYSTEM, LIGHT SOURCE DEVICE FOR ENDOSCOPE, AND ENDOSCOPE

Номер: US20210137373A1
Автор: TAMURA Kazuaki
Принадлежит: OLYMPUS CORPORATION

The endoscope system includes: a laser diode for an endoscope that emits illumination light whose amount can be controlled; an image pickup device that outputs an image pickup signal of an image obtained by receiving reflected light of the illumination light; a photodiode that receives a part of the illumination light of the laser diode; a thermistor that detects a temperature of the laser diode; a thermistor that detects a temperature of the photodiode; a detection light amount temperature correction circuit that corrects an amount of light received by the photodiode based on the temperature of the photodiode; and a laser diode control circuit that controls driving of the laser diode so that an amount of the illumination light becomes a set value based on a corrected amount of received light corrected by the detection light amount temperature correction circuit and the temperature of the laser diode. 1. An endoscope system comprising:a light source for an endoscope configured to emit illumination light having a controllable amount of light;an image pickup device configured to output an image pickup signal of an image obtained by receiving reflected light of the illumination light;a light receiving element configured to receive a part of the illumination light of the light source;a first temperature sensor configured to detect a first temperature of the light source;a second temperature sensor configured to detect a second temperature of the light receiving element;a received light amount correction circuit configured to correct an amount of light received by the light receiving element based on the second temperature; anda drive control circuit configured to control driving of the light source so that an amount of the illumination light becomes a set value based on a corrected amount of received light corrected by the received light amount correction circuit and the first temperature.2. The endoscope system according to claim 1 , whereinthe drive control circuit ...

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Номер записи: 86
26-04-2018 дата публикации

LASER ARRAY WITH DISTRIBUTED BRAGG REFLECTORS

Номер: US20180115139A1
Автор: Bovington Jock, Krishnamoorthy Ashok V., Zheng Xuezhe
Принадлежит: ORACLE INTERNATIONAL CORPORATION

An optical source is described. This optical source includes a set of semiconductor optical amplifiers, with a semiconductor other than silicon, which provides an optical gain medium. In addition, a photonic chip, optically coupled to the set of semiconductor optical amplifiers, includes optical paths. Each of the optical paths includes an optical waveguide and a distributed-Bragg-reflector (DBR) ring resonator. The DBR ring resonator at least partially reflects a given tunable wavelength in an optical signal provided by a given semiconductor optical amplifier. Moreover, the DBR ring resonator includes a different number of grating periods than DBR ring resonators in the remaining optical paths, and the DBR ring resonators in the optical paths have a common radius. 1. An optical source , comprising:a set of semiconductor optical amplifiers defined in a semiconductor other than silicon, wherein a given semiconductor optical amplifier has a first edge and a second edge, includes a reflective coating on the first edge, and, during operation, provides a given optical signal having a given carrier wavelength at the second edge; and an optical waveguide that conveys the given optical signal, wherein the optical waveguide has a third edge optically coupled to the second edge and a fourth edge; and', 'a distributed-Bragg-reflector (DBR) ring resonator, optically coupled to the optical waveguide proximate to the fourth edge, that, during operation, at least partially reflects a given tunable wavelength in the given optical signal, wherein the DBR ring resonator includes a different number of grating periods than DBR ring resonators in the remaining optical paths; and', 'wherein the DBR ring resonators in the optical paths have a common radius., 'a photonic chip optically coupled to the set of semiconductor optical amplifiers, wherein the photonic chip includes optical paths and a given optical path includes2. The optical source of claim 1 , wherein the set of semiconductor ...

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Номер записи: 87
04-05-2017 дата публикации

Light emitting device

Номер: US20170122505A1
Автор: Eiichiro OKAHISA, Kazuma KOZURU, Seiji Kiyota
Принадлежит: Nichia Corp

A light emitting device includes a base defining a recess opening upward, a semiconductor laser element, a light reflecting member to reflect light from the semiconductor laser element, a wavelength converting member to convert wavelength of light from the light reflecting member, and a cover including a light-transmissive member and covering the opening of the recess. The recess is defined in the base by first inner lateral surfaces extending downward from a periphery of the opening of the recess defined in the upper surface of the base, a bottom surface connected to the first inner lateral surfaces, a mounting surface connected to the first inner lateral surfaces and located higher than the bottom surface in a region different from the bottom surface when viewed from above, and second inner lateral surfaces connecting the bottom surface and the mounting surface. The wavelength converting member is fixed on the mounting surface.

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Номер записи: 88
03-05-2018 дата публикации

Inorganic bonded devices and structures

Номер: US20180122993A1
Автор: Jyoti Bhardwaj, Michael CAMRAS, Niels Jeroen VAN DER VEEN, Peter J. Schmidt
Принадлежит: LUMILEDS LLC

An inorganic coating may be applied to bond optically scattering particles or components. Optically scattering particles bonded via the inorganic coating may form a three dimensional film which can receive a light emission, convert, and emit the light emission with one or more changed properties. The inorganic coating may be deposited using a low-pressure deposition technique such as an atomic layer deposition (ALD) technique. Two or more components, such as an LED and a ceramic phosphor layer may be bonded together by depositing an inorganic coating using the ALD technique.

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Номер записи: 89
16-04-2020 дата публикации

Optical component, method of manufacturing same, and light emitting device

Номер: US20200116312A1
Автор: Seiji Kiyota
Принадлежит: Nichia Corp

A method of manufacturing an optical component includes: providing a base comprising a first projection, wherein the first projection includes: an upper surface, and a plurality of lateral surfaces, wherein the plurality of lateral surfaces includes a first lateral surface including: a first light control region, a first non-light-control region that is continuous with the first light control region, and a second non-light-control region on an upper surface side of the first light control region, and wherein the first light control region is located between the first non-light-control region and the second non-light-control region; forming a lower surface of the optical component by processing a lower surface of the base such that the first non-light-control region in the base remains; and forming an upper surface of the optical component by processing an upper surface of the base to remove the second non-light-control region.

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Номер записи: 90
14-05-2015 дата публикации

OPTICAL MODULE AND FRABRICATION METHOD THEREOF

Номер: US20150131995A1
Автор: Dai Xiquan, Wang Liping
Принадлежит: Huawei Technologies Co., Ltd.

The optical module includes an optical component, a substrate, and a laser, an electro-absorption modulator, and a semiconductor optical amplifier that grow on the substrate, where: the electro-absorption modulator is located between the laser and the semiconductor optical amplifier; the laser is configured to output an optical signal after power-on; the electro-absorption modulator is configured to perform signal modulation on the optical signal output by the laser; the semiconductor optical amplifier is configured to amplify the optical signal modulated by the electro-absorption modulator; the optical component is configured to perform deflection and convergence for the optical signal amplified by the semiconductor optical amplifier and output the optical signal. 1. An optical module , comprising ,an optical component; a substrate; anda laser, an electro-absorption modulator, and a semiconductor optical amplifier that grow on the substrate, wherein the electro-absorption modulator is located between the laser and the semiconductor optical amplifier;the laser is configured to output an optical signal after power-on;the electro-absorption modulator is configured to perform signal modulation on the optical signal output by the laser;the semiconductor optical amplifier is configured to amplify the optical signal modulated by the electro-absorption modulator; andthe optical component is configured to perform deflection and convergence for the optical signal amplified by the semiconductor optical amplifier and output the optical signal.2. The optical module according to claim 1 , wherein the optical module further comprises a semiconductor refrigerator claim 1 , wherein the semiconductor refrigerator abuts against the substrate and is located on one side of the substrate that is opposite to the side of the substrate wherein the laser claim 1 , the electro-absorption modulator claim 1 , and the semiconductor optical amplifier are located.3. The optical module according ...

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Номер записи: 91
04-05-2017 дата публикации

LASER SYSTEM INCLUDING OPTICAL AMPLIFICATION SUBSYSTEM PROVIDING AN AMPLIFIED LASER OUTPUT

Номер: US20170125980A1
Автор: Shekel Eyal
Принадлежит: CIVAN ADVANCED TECHNOLOGIES LTD.

A laser system including a seed laser and an optical amplification subsystem, receiving an output of the seed laser and providing an amplified laser output, the optical amplification subsystem including a first plurality of amplifier assemblies, each of the first plurality of amplifier assemblies including a second plurality of optical amplifiers, and phase control circuitry including phase modulating functionality associated with each of the first plurality of amplifier assemblies. 1. A laser system comprising:a seed laser; and a first plurality of more than two amplifier assemblies, each of said first plurality of more than two amplifier assemblies including a second plurality of more than two optical amplifiers arranged in parallel; and', 'first phase control circuitry including phase modulating functionality associated with each of said first plurality of more than two amplifier assemblies', 'each of said first plurality of more than two amplifier assemblies also comprising second phase control circuitry operative to maximize the total output intensity of said second plurality of more than two optical amplifiers., 'an optical amplification subsystem, receiving an output of said seed laser and providing an amplified laser output, said optical amplification subsystem comprising2. A laser system according to and wherein said second phase control circuitry comprises phase modulating functionality associated with each of said second plurality of more than two optical amplifiers claim 1 , said second phase control circuitry including a total output intensity sensor which measures the total output intensity of said second plurality of more than two optical amplifiers and phase control logic circuitry which receives an output from said total output intensity sensor and varies the phase relationships of individual ones of said second plurality of more than two optical amplifiers in order to maximize the total output intensity of said second plurality of more than two ...

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Номер записи: 92
10-05-2018 дата публикации

MULTI-LAYERED SAFETY SYSTEM

Номер: US20180131449A1
Автор: Bashford David, Bashford Thomas W., Erickson Carsten Casey, JR. Thomas J., Kare Jordin T., Nugent
Принадлежит:

Embodiments are directed towards a safety system that can be used with a high-flux power beam, such as in wireless power transmission. The system includes a transmitter that generates and transmits a power beam and a receiver that receives the power beam. A plurality of sensors is configured to independently detect if an object is near, impeding, or about to impede (i.e., impinging) the power beam. Each of the plurality of sensors is configured to detect the object at different distances between the transmitter and the receiver. A controller triggers the transmitter to stop generating the power beam when any one or more of the plurality of sensors detects the object or a combination of the plurality of sensors detects the object. The controller triggers the transmitter to re-generate and transmit the power beam when each of the plurality of sensors fails to detect the object. 1. A system , comprising:a transmitter to generate a power beam;a receiver to receive at least a portion of the power beam;a plurality of sensors arranged to independently detect when an object is impinging on the power beam, at least a first set of one or more sensors of the plurality of sensors arranged to detect the object at or within a first detection volume between the transmitter and the receiver, at least a second set of one or more sensors of the plurality of sensors arranged to detect the object at or within a second detection volume between the transmitter and the receiver, the first detection volume different from the second detection volume; anda controller to interrupt transmission of the power beam to the receiver when, based on information from one or more of the plurality of sensors, the object is determined to be impinging on the power beam.2. The system of claim 1 , wherein the plurality of sensors includes: compare information associated with a position of the object in the plurality of images;', 'triangulate the position of the object; and', 'determine if the object is ...

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Номер записи: 93
28-05-2015 дата публикации

Light emitting device

Номер: US20150146410A1
Автор: Koji Takahashi, Yoshiyuki Takahira, Yosuke MAEMURA
Принадлежит: Sharp Corp

In a light emitting device ( 10 ) includes a light source ( 11 ) which emits near-ultraviolet laser light and a fluorescent member ( 12 ) which includes a fluorescent body ( 13 ) that is excited by the light emitted from the light source ( 11 ) so as to emit light, the fluorescent member ( 12 ) includes a substrate ( 16 ) which is formed with a highly heat conductive member and a fluorescent body layer ( 14 ) in which particles ( 13 d ) of the fluorescent body ( 13 ) are deposited on the substrate ( 16 ).

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Номер записи: 94
09-05-2019 дата публикации

Speckle laser device based on low time coherence and low spatial coherence, and preparation method therefor

Номер: US20190137778A1
Автор: Hui Fan, Ningyi Luo
Принадлежит: Pavilion Integration Suzhou Co Ltd

A speckle laser device based on low time coherence and low spatial coherence, and a preparation method therefor. The speckle laser device comprises a radio frequency modulator ( 1 ), a laser device ( 2 ), a diffracting optical element ( 3 ) and a focusing lens ( 4 ) that are coaxially and sequentially disposed on a same optical platform. The diffracting optical element ( 3 ) is located in the emergent direction of the laser device ( 2 ), the radio frequency modulator ( 1 ) modulates the laser device ( 2 ), and laser ( 001 ) modulated by the radio frequency modulator ( 1 ) enters the diffracting optical element ( 3 ). Laser beams emerging from the diffracting optical element ( 3 ) are zero-coherent speckle laser beams ( 002 ), the laser beams ( 002 ) enter the focusing lens ( 4 ), and the laser emerging from the focusing lens ( 4 ) forms a focused speckle laser ( 003 ). Speckle laser output beams are obtained by using a time coherence and spatial coherence reduction technology, and the problem of speckle production due to time coherence and spatial coherence is resolved.

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Номер записи: 95
09-05-2019 дата публикации

DIFFRACTIVE OPTICAL ELEMENT WITH OFF-AXIS INCIDENCE IN A STRUCTURED LIGHT APPLICATION

Номер: US20190140419A1
Автор: GUO Yonghong, Skidmore Jay A., Wong Vincent V.
Принадлежит:

A structured light system may include a semiconductor laser to emit light and a diffractive optical element to diffract the light such that one or more diffracted orders of the light, associated with forming a structured light pattern, are transmitted by the diffractive optical element. The diffractive optical element may be arranged such that the light is to be incident on the diffractive optical element at a substantially non-normal angle of incidence. The substantially non-normal angle of incidence may be designed to cause the diffractive optical element to transmit a zero-order beam of the light outside of a field of view associated with the diffractive optical element. 1. A structured light system , comprising:a semiconductor laser to emit light; and 'wherein the substantially non-normal angle of incidence is designed to cause the diffractive optical element to transmit a zero-order beam of the light outside of a field of view associated with the diffractive optical element.', 'wherein the diffractive optical element is arranged such that the light is to be incident on the diffractive optical element at a substantially non-normal angle of incidence,'}, 'a diffractive optical element to diffract the light such that one or more diffracted orders of the light, associated with forming a structured light pattern, are transmitted by the diffractive optical element,'}2. The structured light system of claim 1 , wherein the substantially non-normal angle of incidence is designed to cause the diffractive optical element to transmit the one or more diffracted orders asymmetrically with respect to the zero-order beam.3. The structured light system of claim 1 , wherein the structured light pattern is associated with a three-dimensional sensing application.4. The structured light system of claim 1 , wherein the diffractive optical element is a multi-level diffractive optical element or a continuous-relief diffractive optical element.5. The structured light system of claim 1 ...

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Номер записи: 96
09-05-2019 дата публикации

Laser device with a stepped graded index separate confinement heterostructure

Номер: US20190140426A1
Автор: Jonathan K. Doylend, Pierre Doussiere
Принадлежит: Intel Corp

Embodiments of the present disclosure are directed towards a laser device with a stepped graded index separate confinement heterostructure (SCH), in accordance with some embodiments. One embodiment includes a substrate area, and an active region adjacent to the substrate area. The active region includes an SCH layer, which comprises a first portion and a second portion adjacent to the first portion. A composition of the first portion is graded to provide a first conduction band energy increase over a distance from multiple quantum wells (MQW) to a p-side of a laser device junction. A composition of the second portion is graded to provide a second conduction band energy increase over the MQW to the p-side distance. The first conduction band energy increase is different than the second conduction band energy increase. Other embodiments may be described and/or claimed.

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Номер записи: 97
24-05-2018 дата публикации

Laser system including optical amplification subsystem providing an amplified laser output

Номер: US20180145484A1
Автор: Eyal Shekel
Принадлежит: Civan Advanced Technologies Ltd

A laser system including a seed laser and an optical amplification subsystem, receiving an output of the seed laser and providing an amplified laser output, the optical amplification subsystem including a first plurality of amplifier assemblies, each of the first plurality of amplifier assemblies including a second plurality of optical amplifiers, and phase control circuitry including phase modulating functionality associated with each of the first plurality of amplifier assemblies.

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Номер записи: 98
21-08-2014 дата публикации

Quantum dot-wavelength converter, manufacturing method of the same and light emitting device including the same

Номер: US20140230992A1
Автор: Bae Kyun Kim, Dong Hyun Cho, In Hyung Lee, Jae Il Kim, Kyoung Soon Park
Принадлежит: SAMSUNG ELECTRONICS CO LTD

There is provided a quantum dot wavelength converter including a quantum dot, which is optically stable without any change in an emission wavelength and improved in emission capability. The quantum dot wavelength converter includes: a wavelength converting part including a quantum dot wavelength-converting excitation light and generating a wavelength-converted light and a dispersive medium dispersing the quantum dot; and a sealer sealing the wavelength converting part.

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Номер записи: 99
04-06-2015 дата публикации

METHOD OF FABRICATING AND OPERATING AN OPTICAL MODULATOR

Номер: US20150155683A1
Автор: Blauvelt Henry A., HE Xiaoguang, VAHALA Kerry
Принадлежит:

A semiconductor device comprising a substrate; a monolithic gain region disposed on the substrate and operable to produce optical gain in response to current injection, including a first electrode over a first portion of the gain region having a first length L, with a first current Ibeing applied; and a second electrode over a second portion of the gain region having a second length L, with a second current Ibeing applied; wherein I/Lis greater than I/L. 1. A semiconductor device comprising:a substrate;a monolithic gain region forming a first semiconductor region disposed on the substrate and operable to produce optical gain in response to current injection, including an optical waveguide layer extending from a first end of the substrate to a second end of the substrate opposite to the first end, the optical waveguide layer including an active layer formed on the upper surface of the substrate; a reflective mirror provided at one end of the optical waveguide layer, and an exit aperture on the other end of the optical waveguide layer for emitting optical energy;{'sub': 1', '1, 'a first electrode over a first portion of the gain region having a first length L, with a first current Ibeing applied;'}{'sub': 2', '2, 'a second electrode over a second portion of the gain region having a second length L, with a second current Ibeing applied; and'}{'sub': 1', '1', '2', '2, 'wherein I/Lis greater than I/L.'}2. A device as defined in claim 1 , wherein I/Lis at least two times a great as I/L claim 1 , and the gain region comprises an InP semiconductor waveguide structure.3. A device as defined in claim 1 , wherein I/Lis at least five times a great as I/L.4. A device as defined in claim 1 , wherein Lis at least four times as long as L.5. A device as defined in claim 1 , wherein Lis five times as long as L.6. A device as defined in claim 1 , further comprisinga second semiconductor region disposed on a substrate adjacent to the first semiconductor region and separated therefrom ...

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Номер записи: 100