JP2018098490A - 半導体レーザ装置 - Google Patents
半導体レーザ装置 Download PDFInfo
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- JP2018098490A JP2018098490A JP2017202814A JP2017202814A JP2018098490A JP 2018098490 A JP2018098490 A JP 2018098490A JP 2017202814 A JP2017202814 A JP 2017202814A JP 2017202814 A JP2017202814 A JP 2017202814A JP 2018098490 A JP2018098490 A JP 2018098490A
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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
- H01S5/16—Window-type lasers, i.e. with a region of non-absorbing material between the active region and the reflecting surface
- H01S5/162—Window-type lasers, i.e. with a region of non-absorbing material between the active region and the reflecting surface with window regions made by diffusion or disordening of the active layer
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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
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/32—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures
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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
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/32—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures
- H01S5/3211—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures characterised by special cladding layers, e.g. details on band-discontinuities
-
- 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
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
- H01S5/2004—Confining in the direction perpendicular to the layer structure
- H01S5/2018—Optical confinement, e.g. absorbing-, reflecting- or waveguide-layers
- H01S5/2031—Optical confinement, e.g. absorbing-, reflecting- or waveguide-layers characterized by special waveguide layers, e.g. asymmetric waveguide layers or defined bandgap discontinuities
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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
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
- H01S5/22—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers having a ridge or stripe structure
- H01S5/2205—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers having a ridge or stripe structure comprising special burying or current confinement layers
- H01S5/2218—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers having a ridge or stripe structure comprising special burying or current confinement layers having special optical properties
- H01S5/222—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers having a ridge or stripe structure comprising special burying or current confinement layers having special optical properties having a refractive index lower than that of the cladding layers or outer guiding layers
-
- 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
- H01S2301/00—Functional characteristics
- H01S2301/18—Semiconductor lasers with special structural design for influencing the near- or far-field
- H01S2301/185—Semiconductor lasers with special structural design for influencing the near- or far-field for reduction of Astigmatism
-
- 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
- H01S5/1003—Waveguide having a modified shape along the axis, e.g. branched, curved, tapered, voids
- H01S5/1014—Tapered waveguide, e.g. spotsize converter
-
- 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
- H01S5/16—Window-type lasers, i.e. with a region of non-absorbing material between the active region and the reflecting surface
- H01S5/164—Window-type lasers, i.e. with a region of non-absorbing material between the active region and the reflecting surface with window regions comprising semiconductor material with a wider bandgap than the active layer
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Geometry (AREA)
- Semiconductor Lasers (AREA)
Abstract
Description
実施例1
比較例1
12 第1型被覆層 13 第1型導波層
14 活性層 15 第2型導波層
16 第2型被覆層 17 キャッピング層
34 活性層 141 発光部
141A 第1非活性発光領域 141B 発光領域
141C 第2非活性発光領域 142 光出射部
142A 第1不活性領域 142B 光出射領域
142C 第2不活性領域 341 発光部
342 光出射部 B1 第1境界
B2 第2境界 D1 方向
J1 第1境目 J2 第2境目
W1 幅 W2 幅
α 第1夾角 β 第2夾角
Claims (10)
- 基板と、第1型被覆層と、第1型導波層と、活性層と、第2型導波層と、第2型被覆層と、キャッピング層と、を含む半導体レーザ装置であって、
前記第1型被覆層は、前記基板に設けられ、
前記第1型導波層は、前記第1型被覆層に設けられ、
前記活性層は、前記第1型導波層に設けられ、且つ互いに隣接する発光部及び光出射部を含み、前記発光部がレーザ光を発生し、前記レーザ光が前記発光部から上記光出射部への方向に沿って出射され、前記光出射部が第1不活性領域、光出射領域、及び第2不活性領域を含み、前記光出射領域が前記第1不活性領域と前記第2不活性領域との間に設けられ、前記光出射領域の屈折率が上記第1不活性領域の屈折率より低く、且つ前記光出射領域の屈折率が前記第2不活性領域の屈折率より低く、前記光出射領域の一部の幅が前記方向に沿って連続的に増加し、
前記第2型導波層は、前記活性層に設けられ、
前記第2型被覆層は、前記第2型導波層に設けられ、
前記キャッピング層は、前記第2型被覆層に設けられる半導体レーザ装置 - 前記第1型被覆層は、n型被覆層であり、前記第1型導波層は、n型導波層であり、前記第2型導波層は、p型導波層であり、前記第2型被覆層は、p型被覆層である請求項1に記載の半導体レーザ装置。
- 前記第1型被覆層は、p型被覆層であり、前記第1型導波層は、p型導波層であり、前記第2型導波層は、n型導波層であり、前記第2型被覆層は、n型被覆層である請求項1に記載の半導体レーザ装置。
- 前記光出射領域の他の部分の幅は、前記方向に沿って一定値を保持する請求項1に記載の半導体レーザ装置。
- 前記第1不活性領域と前記光出射領域との間に第1境界を有し、且つ前記光出射領域と前記第2不活性領域との間に第2境界を有し、前記幅は、前記第1境界と前記第2境界との間の距離により定義されるものである請求項1に記載の半導体レーザ装置。
- 上記第1境界は、直線形状又は放物線形状である請求項5に記載の半導体レーザ装置。
- 前記第2境界は、直線形状又は放物線形状である請求項6に記載の半導体レーザ装置。
- 前記発光部は、第1非活性発光領域、発光領域、及び第2非活性発光領域を含み、前記発光領域が前記第1非活性発光領域と前記第2非活性発光領域との間に設けられ、前記発光領域の屈折率が前記第1非活性発光領域の屈折率より高く、且つ前記発光領域の屈折率が前記第2非活性発光領域の屈折率より高い請求項1に記載の半導体レーザ装置。
- 前記第1非活性発光領域と前記第1不活性領域との間に第1境目を有し、前記第1不活性領域と前記光出射領域との間に第1境界を有し、前記第1境目と前記第1境界との間に第1角度が形成され、前記第1角度は、0.1度〜89.9度である請求項8に記載の半導体レーザ装置。
- 前記第2非活性発光領域と前記第2不活性領域との間に第2境目を有し、前記第2不活性領域と前記光出射領域との間に第2境界を有し、前記第2境目と前記第2境界との間に第2角度が形成され、前記第2角度は、0.1度〜89.9度である請求項9に記載の半導体レーザ装置。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201662432814P | 2016-12-12 | 2016-12-12 | |
| US62/432,814 | 2016-12-12 |
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| Publication Number | Publication Date |
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| JP2018098490A true JP2018098490A (ja) | 2018-06-21 |
| JP6517902B2 JP6517902B2 (ja) | 2019-05-22 |
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| JP2017202814A Active JP6517902B2 (ja) | 2016-12-12 | 2017-10-19 | 半導体レーザ装置 |
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| US (1) | US10050413B2 (ja) |
| JP (1) | JP6517902B2 (ja) |
| CN (1) | CN108233178B (ja) |
| TW (1) | TWI609541B (ja) |
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| CN108963754B (zh) * | 2018-07-02 | 2020-10-16 | 福建中科光芯光电科技有限公司 | 一种光通信波段低发散角dfb半导体激光器的制备方法 |
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- 2017-04-26 TW TW106113946A patent/TWI609541B/zh active
- 2017-06-14 CN CN201710445659.1A patent/CN108233178B/zh active Active
- 2017-09-19 US US15/708,531 patent/US10050413B2/en active Active
- 2017-10-19 JP JP2017202814A patent/JP6517902B2/ja active Active
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| Publication number | Publication date |
|---|---|
| US10050413B2 (en) | 2018-08-14 |
| JP6517902B2 (ja) | 2019-05-22 |
| TW201822419A (zh) | 2018-06-16 |
| CN108233178B (zh) | 2020-05-08 |
| TWI609541B (zh) | 2017-12-21 |
| US20180166857A1 (en) | 2018-06-14 |
| CN108233178A (zh) | 2018-06-29 |
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