JP2021007136A - 発光装置およびプロジェクター - Google Patents
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- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/34—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers
- H01S5/341—Structures having reduced dimensionality, e.g. quantum wires
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
- H01S5/18386—Details of the emission surface for influencing the near- or far-field, e.g. a grating on the surface
- H01S5/18391—Aperiodic structuring to influence the near- or far-field distribution
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- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0425—Electrodes, e.g. characterised by the structure
- H01S5/04254—Electrodes, e.g. characterised by the structure characterised by the shape
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- H—ELECTRICITY
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- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0425—Electrodes, e.g. characterised by the structure
- H01S5/04256—Electrodes, e.g. characterised by the structure characterised by the configuration
- H01S5/04257—Electrodes, e.g. characterised by the structure characterised by the configuration having positive and negative electrodes on the same side of the substrate
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- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/11—Comprising a photonic bandgap structure
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- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
- H01S5/18308—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] having a special structure for lateral current or light confinement
- H01S5/18319—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] having a special structure for lateral current or light confinement comprising a periodical structure in lateral directions
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- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
- H01S5/18344—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] characterized by the mesa, e.g. dimensions or shape of the mesa
- H01S5/18347—Mesa comprising active layer
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- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
- H01S5/18361—Structure of the reflectors, e.g. hybrid mirrors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B33/00—Colour photography, other than mere exposure or projection of a colour film
- G03B33/10—Simultaneous recording or projection
- G03B33/12—Simultaneous recording or projection using beam-splitting or beam-combining systems, e.g. dichroic mirrors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0425—Electrodes, e.g. characterised by the structure
- H01S5/04252—Electrodes, e.g. characterised by the structure characterised by the material
- H01S5/04253—Electrodes, e.g. characterised by the structure characterised by the material having specific optical properties, e.g. transparent electrodes
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- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/34—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers
- H01S5/343—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/34333—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser with a well layer based on Ga(In)N or Ga(In)P, e.g. blue laser
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- Optics & Photonics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Projection Apparatus (AREA)
- Semiconductor Lasers (AREA)
- Led Devices (AREA)
Abstract
Description
基体と、
前記基体に設けられ、複数の柱状部を有する積層体と、
前記積層体の前記基体とは反対側に設けられている電極と、
を有し、
前記柱状部は、発光層を有し、
前記柱状部は、前記電極と前記基体との間に設けられ、
前記発光層で発生した光は、複数の前記柱状部を伝搬してレーザー発振し、
前記電極には、孔が設けられている。
前記孔は、前記電極を貫通していてもよい。
前記孔の径は、前記柱状部の径よりも小さくてもよい。
前記積層体の積層方向から見た平面視において、前記孔の少なくとも一部は、前記柱状部と重ならなくてもよい。
前記孔は、複数設けられ、
隣り合う前記孔の間隔は、前記発光層が発生させる光の波長よりも大きくてもよい。
前記積層体の積層方向から見た平面視において、前記孔は、長手方向と短手方向とを有し、
前記孔の前記短手方向の長さは、前記柱状部の径よりも小さくてもよい。
前記発光装置の一態様を有する。
1.1. 発光装置
まず、第1実施形態に係る発光装置について、図面を参照しながら説明する。図1は、第1実施形態に係る発光装置100を模式的に示す断面図である。図2は、第1実施形態に係る発光装置100を模式的に示す平面図である。なお、図1は、図2のI−I線断面図である。
次に、発光装置100の製造方法について、図面を参照しながら説明する。図3および図4は、発光装置100の製造工程を模式的に示す断面図である。
次に、第2実施形態に係る発光装置について、図面を参照しながら説明する。図5は、第2実施形態に係る発光装置200を模式的に示す断面図である。以下、第2実施形態に係る発光装置200において、上述した第1実施形態に係る発光装置100の構成部材と同様の機能を有する部材については同一の符号を付し、その詳細な説明を省略する。
次に、第3実施形態に係る発光装置について、図面を参照しながら説明する。図6は、第3実施形態に係る発光装置300を模式的に示す断面図である。図7は、第3実施形態に係る発光装置300を模式的に示す平面図である。なお、図6は、図7のVI−VI線断面図である。以下、第3実施形態に係る発光装置300において、上述した第1実施形態に係る発光装置100の構成部材と同様の機能を有する部材については同一の符号を付し、その詳細な説明を省略する。
次に、第4実施形態に係るプロジェクターについて、図面を参照しながら説明する。図8は、第4実施形態に係るプロジェクター900を模式的に示す図である。
なお、本発明は上述した実施形態に限定されず、本発明の要旨の範囲内で種々の変形実施が可能である。
Claims (7)
- 基体と、
前記基体に設けられ、複数の柱状部を有する積層体と、
前記積層体の前記基体とは反対側に設けられている電極と、
を有し、
前記柱状部は、発光層を有し、
前記柱状部は、前記電極と前記基体との間に設けられ、
前記発光層で発生した光は、複数の前記柱状部を伝搬してレーザー発振し、
前記電極には、孔が設けられている、発光装置。 - 請求項1において、
前記孔は、前記電極を貫通している、発光装置。 - 請求項2において、
前記孔の径は、前記柱状部の径よりも小さい、発光装置。 - 請求項1ないし3のいずれか1項において、
前記積層体の積層方向から見た平面視において、前記孔の少なくとも一部は、前記柱状部と重ならない、発光装置。 - 請求項1ないし4のいずれか1項において、
前記孔は、複数設けられ、
隣り合う前記孔の間隔は、前記発光層が発生させる光の波長よりも大きい、発光装置。 - 請求項1または2において、
前記積層体の積層方向から見た平面視において、前記孔は、長手方向と短手方向とを有し、
前記孔の前記短手方向の長さは、前記柱状部の径よりも小さい、発光装置。 - 請求項1ないし6のいずれか1項に記載の発光装置を有する、プロジェクター。
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WO2023058217A1 (ja) * | 2021-10-08 | 2023-04-13 | 日本電信電話株式会社 | ナノワイヤレーザおよびその製造方法 |
US11803115B2 (en) | 2021-10-28 | 2023-10-31 | Sophia School Corporation | Light-emitting device and projector |
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JP7056628B2 (ja) * | 2019-06-28 | 2022-04-19 | セイコーエプソン株式会社 | 発光装置およびプロジェクター |
JP2021057443A (ja) * | 2019-09-30 | 2021-04-08 | セイコーエプソン株式会社 | 発光装置、および、プロジェクター |
US20210168338A1 (en) * | 2019-11-29 | 2021-06-03 | Seiko Epson Corporation | Light emitting apparatus and projector |
JP7230901B2 (ja) * | 2020-12-18 | 2023-03-01 | セイコーエプソン株式会社 | 発光装置およびプロジェクター |
JP2022152157A (ja) * | 2021-03-29 | 2022-10-12 | セイコーエプソン株式会社 | 発光装置、プロジェクター、およびディスプレイ |
JP2022152161A (ja) * | 2021-03-29 | 2022-10-12 | セイコーエプソン株式会社 | 発光装置、プロジェクター、およびディスプレイ |
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