JP2006261424A - 半導体レーザ素子及びガス検知装置 - Google Patents
半導体レーザ素子及びガス検知装置 Download PDFInfo
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Abstract
【解決手段】 波長可変半導体レーザ吸収分光法に使用される半導体レーザ素子1は、半導体基板10、活性層12、クラッド層13が一対の電極17,18間に積層形成され、光導波路が活性領域と該活性領域に連続する位相調整領域とDBR領域とからなり、少なくとも位相調整領域の全体または一部を加熱するようにクラッド層13の上面に絶縁層19を介して薄膜抵抗からなる加熱手段20が配設される。この加熱手段20と一対の電極17,18には単一の電源2から電力が供給される。
【選択図】 図1
Description
少なくとも前記位相調整領域の全体または一部を加熱するように前記クラッド層13の上面に絶縁層19を介して配設された薄膜抵抗からなる加熱手段20を備え、
前記加熱手段および前記一対の電極には単一の電源から電力が供給されることを特徴とする。
少なくとも前記回折格子領域を加熱するように前記クラッド層の上面に絶縁層19を介して配設された薄膜抵抗からなる加熱手段20を備え、
前記加熱手段および前記一対の電極には単一の電源から電力が供給されることを特徴とする。
該半導体レーザ素子から所定波長のレーザ光を検知空間に入射し、このレーザ光が前記検知空間に含まれる検知対象ガスによって減衰することを利用した波長可変半導体レーザ吸収分光法を用いてガス検知を行うことを特徴とする。
まず、本例の半導体レーザ素子の第1実施例について図1を参照しながら具体的に説明する。第1実施例の半導体レーザ素子1A(1)は、図1に示すように、光導波路が活性領域、位相調整領域、DBR領域の3つの領域から構成されるDBRレーザである。
次に、本例の半導体レーザ素子の第2実施例について図3を参照しながら具体的に説明する。第2実施例の半導体レーザ素子1B(1)は、活性層12の下層にある光ガイド層11の全面に渡って回折格子14が形成されたDFBレーザである。
次に、本例の半導体レーザ素子の第3実施例について図4を参照しながら具体的に説明する。第3実施例の半導体レーザ素子1C(1)は、第2実施例の半導体レーザ素子1B(1)において形成された回折格子14が活性層12上の全面でなく出射方向端面側に部分的に形成された部分回折格子型半導体レーザ(PC−LD)である。
次に、本例の半導体レーザ素子の第4実施例について図5を参照しながら具体的に説明する。
2 電源
10 n−InP基板(半導体基板)
10a メサ
12 活性層
13 クラッド層
14 回折格子
14a 第1の回折格子
14b 第2の回折格子
15 InP埋込層
16 n−InP埋込層
17 n側電極
18 p側電極
19 絶縁層
20 加熱手段
21 反射防止膜
21a 反射防止膜
21b 高反射膜
Claims (3)
- 半導体基板(10)、活性層(12)、クラッド層(13)を少なくとも備えた半導体層が一対の電極(17,18)間に積層形成され、光導波路が活性領域と該活性領域に連続する位相調整領域とDBR領域とからなり、波長可変半導体レーザ吸収分光法に使用される半導体レーザ素子(1)において、
少なくとも前記位相調整領域の全体または一部を加熱するように前記クラッド層(13)の上面に絶縁層(19)を介して配設された薄膜抵抗からなる加熱手段(20)を備え、
前記加熱手段および前記一対の電極には単一の電源から電力が供給されることを特徴とする半導体レーザ素子。 - 半導体基板(10)、活性層(12)、クラッド層(13)を少なくとも備えた半導体層が一対の電極(17,18)間に積層形成され、光導波路中に少なくとも1つの回折格子領域を有し、波長可変半導体レーザ吸収分光法に使用される半導体レーザ素子(1)において、
少なくとも前記回折格子領域を加熱するように前記クラッド層の上面に絶縁層(19)を介して配設された薄膜抵抗からなる加熱手段(20)を備え、
前記加熱手段および前記一対の電極には単一の電源から電力が供給されることを特徴とする半導体レーザ素子。 - 請求項1または請求項2記載の半導体レーザ素子(1)を具備し、
該半導体レーザ素子から所定波長のレーザ光を検知空間に入射し、このレーザ光が前記検知空間に含まれる検知対象ガスによって減衰することを利用した波長可変半導体レーザ吸収分光法を用いてガス検知を行うことを特徴とするガス検知装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005077373A JP4231854B2 (ja) | 2005-03-17 | 2005-03-17 | 半導体レーザ素子及びガス検知装置 |
EP06729350A EP1737089B1 (en) | 2005-03-17 | 2006-03-17 | Variable wavelength semiconductor laser element, method for fabricating the same and gas detector employing it |
US11/578,637 US7620078B2 (en) | 2005-03-17 | 2006-03-17 | Tunable semiconductor laser device, manufacturing method therefor, and gas detector using therewith |
CNB2006800002566A CN100481659C (zh) | 2005-03-17 | 2006-03-17 | 可调半导体激光器及其制造方法,使用该激光器的气体检测器 |
PCT/JP2006/305360 WO2006098427A1 (ja) | 2005-03-17 | 2006-03-17 | 波長可変半導体レーザ素子及びその製造方法並びにそれを用いるガス検知装置 |
KR1020067024014A KR100799782B1 (ko) | 2005-03-17 | 2006-03-17 | 파장 가변 반도체 레이저 소자 및 그 제조 방법과 그를 이용하는 가스 검지 장치 |
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JP (1) | JP4231854B2 (ja) |
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-
2005
- 2005-03-17 JP JP2005077373A patent/JP4231854B2/ja not_active Expired - Fee Related
-
2006
- 2006-03-17 EP EP06729350A patent/EP1737089B1/en not_active Expired - Fee Related
- 2006-03-17 US US11/578,637 patent/US7620078B2/en not_active Expired - Fee Related
- 2006-03-17 WO PCT/JP2006/305360 patent/WO2006098427A1/ja active Application Filing
- 2006-03-17 CN CNB2006800002566A patent/CN100481659C/zh not_active Expired - Fee Related
- 2006-03-17 KR KR1020067024014A patent/KR100799782B1/ko not_active IP Right Cessation
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JP2008218947A (ja) * | 2007-03-08 | 2008-09-18 | Nippon Telegr & Teleph Corp <Ntt> | 波長可変半導体レーザ素子及びその制御装置、制御方法 |
US7961769B2 (en) | 2007-03-08 | 2011-06-14 | Nippon Telegraph And Telephone Corporation | Wavelength tunable semiconductor laser device, controller for the same, and control method for the same |
WO2023248412A1 (ja) * | 2022-06-23 | 2023-12-28 | 日本電信電話株式会社 | 波長可変レーザ、波長可変レーザモジュールおよび波長可変レーザの層構造の製造方法 |
CN118336512A (zh) * | 2024-06-12 | 2024-07-12 | 天津市极光创新智能科技有限公司 | 一种tdlas中红外激光控制系统及方法 |
Also Published As
Publication number | Publication date |
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WO2006098427A1 (ja) | 2006-09-21 |
KR100799782B1 (ko) | 2008-01-31 |
CN100481659C (zh) | 2009-04-22 |
EP1737089A1 (en) | 2006-12-27 |
KR20070015201A (ko) | 2007-02-01 |
JP4231854B2 (ja) | 2009-03-04 |
CN1957508A (zh) | 2007-05-02 |
EP1737089B1 (en) | 2011-12-21 |
EP1737089A4 (en) | 2011-02-02 |
US7620078B2 (en) | 2009-11-17 |
US20090086206A1 (en) | 2009-04-02 |
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