JP4892293B2 - 量子カスケードレーザ - Google Patents
量子カスケードレーザ Download PDFInfo
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- JP4892293B2 JP4892293B2 JP2006203239A JP2006203239A JP4892293B2 JP 4892293 B2 JP4892293 B2 JP 4892293B2 JP 2006203239 A JP2006203239 A JP 2006203239A JP 2006203239 A JP2006203239 A JP 2006203239A JP 4892293 B2 JP4892293 B2 JP 4892293B2
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- layer
- active layer
- cascade laser
- quantum cascade
- waveguide
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Description
101 第1の半導体層
102 第2の半導体層
110、140 導波路層
120 活性層
121 キャリア走行層
122 発光層
130 接合層
201、301 ミニバンド
202 ミニバンド201の下端とフェルミ準位203とのエネルギー差
203 導波路層のフェルミ準位
302 ミニバンド301の下端とフェルミ準位203とのエネルギー差
Claims (4)
- ポテンシャル障壁となる第1の半導体層および量子井戸となる第2の半導体層を交互に積層した構造を有する活性層と、
前記活性層を両側から挟む、1組の導波路層と、
前記活性層と、前記活性層への電圧印加時に負極側となる導波路層との間に挿入された、前記活性層とは異なる積層構造を有する接合層と
を備え、
前記接合層の積層構造は、前記接合層によって形成されるミニバンドの下端と前記導波路層のフェルミ準位とのエネルギー差が、前記接合層を挿入することなく、前記活性層を前記活性層への電圧印加時に負極側となる導波路層に直接接合した場合に前記活性層によって形成されるミニバンドの下端と前記導波路層のフェルミ準位とのエネルギー差に比べて小さくなるように設計されていることを特徴とする量子カスケードレーザ。 - 前記接合層の積層構造は、前記第1および第2の半導体層から構成されていることを特徴とする請求項1に記載の量子カスケードレーザ。
- 前記接合層内にあって前記導波路層と接する第1の半導体層の厚さは、前記活性層内にあって前記導波路層に最も近い部位に設けられた第1の半導体層の厚さに比べて薄くなっていることを特徴とする請求項2に記載の量子カスケードレーザ。
- 前記第1の半導体層と前記第2の半導体層との組み合わせが、AlSbとInAs、AlGaSbとInAs、GaSbとInAs、AlInAsとGaInAs、AlAsとGaAs、AlGaAsとGaAs、GaInAsとAlAsSbのうちのいずれかであることを特徴とする請求項1乃至3のいずれかに記載の量子カスケードレーザ。
Priority Applications (1)
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JP2006203239A JP4892293B2 (ja) | 2006-07-26 | 2006-07-26 | 量子カスケードレーザ |
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JP2006203239A JP4892293B2 (ja) | 2006-07-26 | 2006-07-26 | 量子カスケードレーザ |
Publications (2)
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JP2008034447A JP2008034447A (ja) | 2008-02-14 |
JP4892293B2 true JP4892293B2 (ja) | 2012-03-07 |
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JP2006203239A Expired - Fee Related JP4892293B2 (ja) | 2006-07-26 | 2006-07-26 | 量子カスケードレーザ |
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JP (1) | JP4892293B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8735903B2 (en) * | 2010-02-10 | 2014-05-27 | Taiwan Semiconductor Manufacturing Company, Ltd. | Density of states engineered field effect transistor |
JP2015207584A (ja) * | 2014-04-17 | 2015-11-19 | 浜松ホトニクス株式会社 | 半導体レーザ |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2760574B1 (fr) * | 1997-03-04 | 1999-05-28 | Thomson Csf | Laser unipolaire multi-longueurs d'ondes |
JP2004119814A (ja) * | 2002-09-27 | 2004-04-15 | Matsushita Electric Ind Co Ltd | ユニポーラ多重量子井戸デバイスとその製造方法 |
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2006
- 2006-07-26 JP JP2006203239A patent/JP4892293B2/ja not_active Expired - Fee Related
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