JP5552793B2 - 半導体回折格子素子、及び、半導体レーザ - Google Patents
半導体回折格子素子、及び、半導体レーザ Download PDFInfo
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- JP5552793B2 JP5552793B2 JP2009241691A JP2009241691A JP5552793B2 JP 5552793 B2 JP5552793 B2 JP 5552793B2 JP 2009241691 A JP2009241691 A JP 2009241691A JP 2009241691 A JP2009241691 A JP 2009241691A JP 5552793 B2 JP5552793 B2 JP 5552793B2
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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
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/062—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes
- H01S5/0625—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes in multi-section lasers
- H01S5/06255—Controlling the frequency of the radiation
- H01S5/06256—Controlling the frequency of the radiation with DBR-structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12083—Constructional arrangements
- G02B2006/12107—Grating
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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
- H01S5/04254—Electrodes, e.g. characterised by the structure characterised by the shape
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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
- H01S5/12—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 the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
- H01S5/1206—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 the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers having a non constant or multiplicity of periods
- H01S5/1212—Chirped grating
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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
- H01S5/34—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
- H01S5/34306—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 emitting light at a wavelength longer than 1000nm, e.g. InP based 1300 and 1500nm lasers
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- Nanotechnology (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Semiconductor Lasers (AREA)
Description
半導体基板1:Si−InP
下部クラッド層21,31,41,51:Si−InP
コア層22,32,42:GaInAsP
回折格子層23,33:GaInAsP及びInP
上部クラッド層24,34,43,53:Zn−InP
コンタクト層25,35,44,54:Zn−GaInAs
活性層52:GaInAsP
Claims (5)
- 主面を有する半導体基板と、
該半導体基板の前記主面上に設けられた半導体コア層と及び半導体クラッド層と、
前記半導体コア層と前記半導体クラッド層との間に設けられたチャープ回折格子構造と、を備え、
前記チャープ回折格子構造は、所定の軸の方向に順に配置された第1〜第3の領域を含むと共に、該第1〜3の領域内にチャープ回折格子のための複数の凸部を有し、
前記凸部は、前記チャープ回折格子のピッチで前記所定の軸の方向に配列された設置位置に設けられ、
前記チャープ回折格子の結合係数κの変化は、前記第1の領域において前記所定の軸の方向に所定の値まで単調に増加すると共に、前記第2の領域において平坦であり、且つ、前記第3の領域において前記所定の軸の方向に前記所定の値から単調に減少するものであり、
前記所定の軸の方向について、前記第1の領域の長さと前記第3の領域の長さとの和は、前記チャープ回折格子の全長の5.9%以上23.5%以下であり、
前記チャープ回折格子構造上に前記所定の軸の方向に配列された複数の電極を更に備える、ことを特徴とする半導体回折格子素子。 - 前記第1の領域内の前記凸部の高さは、前記所定の軸の方向に単調に高くなっており、
前記第3の領域内の前記凸部の高さは、前記所定の軸の方向に単調に低くなっている、
ことを特徴とする請求項1に記載の半導体回折格子素子。 - 前記第1の領域内の前記設置位置のうちの少なくとも一つの位置には、前記チャープ回折格子のための凸部が設けられておらず、
前記第3の領域内の前記設置位置のうちの少なくとも一つの位置には、前記チャープ回折格子のための凸部が設けられていない、ことを特徴とする請求項1に記載の半導体回折格子素子。 - 前記所定の軸の方向について、前記第1の領域の長さと前記第3の領域の長さとの和は、前記チャープ回折格子の全長の10%以上20%以下の範囲である、ことを特徴とする請求項1〜3のいずれか一項に記載の半導体回折格子素子。
- 主面を有する半導体基板と、
前記半導体基板の前記主面上に設けられており光共振器のための第1及び第2の反射部と、
前記半導体基板の前記主面上において前記第1の反射部と前記第2の反射部との間に配置されておりキャリア注入による光学利得を有する利得部と、を備え、
前記第1の反射部、前記第2の反射部及び前記利得部は、前記半導体基板の前記主面に沿って配列されており、
前記第2の反射部は、前記半導体基板の前記主面上に設けられた半導体コア層及び半導体クラッド層と、前記半導体コア層と前記半導体クラッド層との間に設けられたチャープ回折格子構造と、該チャープ回折格子構造上に所定の軸の方向に配列された複数の電極と、を含み、
前記チャープ回折格子構造は、前記所定の軸の方向に順に配置された第1〜第3の領域を含むと共に、該第1〜3の領域内にチャープ回折格子のための複数の凸部を有し、
前記凸部は、チャープ回折格子のピッチで前記所定の軸の方向に配列された設置位置に設けられ、
前記チャープ回折格子の結合係数κの変化は、前記第1の領域において前記所定の軸の方向に所定の値まで単調に増加すると共に、前記第2の領域において平坦であり、且つ、前記第3の領域において前記所定の軸の方向に前記所定の値から単調に減少するものであり、
前記所定の軸の方向について、前記第1の領域の長さと前記第3の領域の長さとの和は、前記チャープ回折格子の全長の5.9%以上23.5%以下である、ことを特徴とする半導体レーザ。
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JP2009241691A JP5552793B2 (ja) | 2009-10-20 | 2009-10-20 | 半導体回折格子素子、及び、半導体レーザ |
US12/902,526 US8243768B2 (en) | 2009-10-20 | 2010-10-12 | Semiconductor diffraction grating device and semiconductor laser |
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US20130321900A1 (en) * | 2010-12-01 | 2013-12-05 | Epicrystals Oy | Optical broadband filter and device comprising the same |
KR102356454B1 (ko) | 2015-02-17 | 2022-01-27 | 삼성전자주식회사 | 이중 커플러 소자, 상기 이중 커플러를 포함하는 분광기, 및 상기 분광기를 포함하는 비침습형 생체 센서 |
TWI541493B (zh) * | 2015-09-01 | 2016-07-11 | 國立交通大學 | 一種分光器及其光譜儀 |
JP2017187690A (ja) * | 2016-04-07 | 2017-10-12 | 富士通株式会社 | 光素子、光モジュール及び光伝送システム |
GB201610647D0 (en) | 2016-06-17 | 2016-08-03 | Univ York | Improved sensor and associated methods |
JP2018006440A (ja) * | 2016-06-29 | 2018-01-11 | 日本電信電話株式会社 | 半導体レーザ |
JP6360862B2 (ja) * | 2016-08-30 | 2018-07-18 | 株式会社フジクラ | ファイバチャープドグレーティング素子及びファイバレーザ |
TWI673481B (zh) * | 2018-02-02 | 2019-10-01 | 國立交通大學 | 共振波長量測裝置及其量測方法 |
GB2594077B (en) * | 2020-04-16 | 2022-10-05 | Rockley Photonics Ltd | Silicon grating with amorphous silicon perturbation |
US20220263286A1 (en) * | 2021-02-16 | 2022-08-18 | Macom Technology Solutions Holdings, Inc. | High kappa semiconductor lasers |
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JP2690840B2 (ja) * | 1992-08-05 | 1997-12-17 | 日本電信電話株式会社 | 分布光反射器及びそれを用いた波長可変半導体レーザ |
US5379318A (en) * | 1994-01-31 | 1995-01-03 | Telefonaktiebolaget L M Ericsson | Alternating grating tunable DBR laser |
FR2737942B1 (fr) * | 1995-08-18 | 1997-11-07 | Delorme Franck | Composant d'emission laser accordable en longueur d'onde par variation d'absorption |
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US6788727B2 (en) * | 2002-06-13 | 2004-09-07 | Intel Corporation | Method and apparatus for tunable wavelength conversion using a bragg grating and a laser in a semiconductor substrate |
JP2004247710A (ja) * | 2003-01-20 | 2004-09-02 | Nippon Telegr & Teleph Corp <Ntt> | 半導体素子の作製方法及び半導体素子 |
JP4444742B2 (ja) * | 2004-07-02 | 2010-03-31 | 日本電信電話株式会社 | 波長可変半導体モード同期レーザ |
JP4007609B2 (ja) * | 2004-07-14 | 2007-11-14 | 日本電信電話株式会社 | 半導体素子の作製方法 |
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