JP2008244470A - 面発光レーザ素子 - Google Patents
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Abstract
【解決手段】基板と、前記基板上に位置し、下部多層膜反射鏡と上部多層膜反射鏡とを有する光共振器と、前記共振器内に位置し、量子井戸層と障壁層とを有する多重量子井戸構造の歪み活性層と、前記歪み活性層の上側に位置し、選択酸化部を有する電流狭窄層と、を備え、前記電流狭窄層は、前記歪み活性層に対して前記選択酸化部内の歪みの影響が及ぶ位置に配置する。
【選択図】 図1
Description
はじめに、本発明の実施の形態1に係る面発光レーザ素子について説明する。本実施の形態1に係る面発光レーザ素子は、GaAsからなる基板上にGaInNAsからなる多重量子井戸構造を有する歪み活性層を積層した、発振波長が1300nmの面発光レーザ素子である。
つぎに、本発明の実施の形態2に係る面発光レーザ素子について説明する。本実施の形態2に係る面発光レーザ素子は、実施の形態1に係る面発光レーザ素子と同様の構成を備えるが、歪み活性層がInAsからなる量子ドット構造を有する点が異なる。
つぎに、本発明の実施の形態3に係る面発光レーザ素子について説明する。本実施の形態3に係る面発光レーザ素子は、実施の形態1に係る面発光レーザ素子と同様の構成を備え、同様の効果を奏するが、上部多層膜反射鏡と活性層との間に積層したトンネル接合層を備える点などが異なる。
つぎに、本発明の実施の形態4に係る面発光レーザ素子について説明する。本実施の形態4に係る面発光レーザ素子は、上部多層膜反射鏡が誘電体多層膜からなる点や、n側電極が下部多層膜反射鏡上に位置する点などが、実施の形態1〜3に係る面発光レーザ素子とは異なる。
2、21 基板
3、19 n−DBRミラー
4 n−GaAsクラッド層
5、15、25 歪み活性層
5a 量子井戸層
5b、15b 障壁層
6、8 p−GaAsクラッド層
7、27 電流狭窄層
7a、27a 選択酸化部
7b、27b 電流狭窄部
9 p−DBRミラー
11 ポリイミド
12、31 p側電極
13 トンネル接合層
14 n−GaAsクラッド層
15a 量子ドット層
15aa 量子ドット部
15ab 障壁領域
22 下部DBRミラー
23 バッファ層
24 n−コンタクト層
26 下部傾斜組成層
28 上部傾斜組成層
29 p−クラッド層
30 p+−コンタクト層
33 パッシベーション膜
34 n側引き出し電極
35 上部DBRミラー
36 p側引き出し電極
100〜400 面発光レーザ素子
A 開口部
Claims (14)
- 基板と、
前記基板上に位置し、下部多層膜反射鏡と上部多層膜反射鏡とを有する光共振器と、
前記共振器内に位置し、量子井戸層と障壁層とを有する多重量子井戸構造の歪み活性層と、
前記歪み活性層の上側に位置し、選択酸化部を有する電流狭窄層と、
を備え、前記電流狭窄層は、前記歪み活性層に対して前記選択酸化部内の歪みの影響が及ぶ位置に配置することを特徴とする面発光レーザ素子。 - 基板と、
前記基板上に位置し、下部多層膜反射鏡と上部多層膜反射鏡とを有する光共振器と、
前記共振器内に位置し、量子ドット部を形成した量子ドット層と障壁層とを有する量子ドット構造の歪み活性層と、
前記歪み活性層上に位置し、選択酸化部を有する電流狭窄層と、
を備え、前記電流狭窄層は、前記歪み活性層に対して前記選択酸化部内の歪みの影響が及ぶ位置に配置することを特徴とする面発光レーザ素子。 - 前記歪み活性層の歪みが圧縮歪みであり、前記障壁層の厚さは5〜10nmであることを特徴とする請求項1または2に記載の面発光レーザ素子。
- 前記歪み活性層は、前記光共振器内に生じる光の定在波の腹に位置し、前記電流狭窄層は、レーザ発振波長をλ、前記光共振器の平均屈折率をNとした場合に、前記歪み活性層からλ/4Nまたは3λ/4Nの距離に位置することを特徴とする請求項1〜3のいずれか1つに記載の面発光レーザ素子。
- 前記電流狭窄層は、前記歪み活性層から300nm以下の距離に位置することを特徴とする請求項1〜4のいずれか1つに記載の面発光レーザ素子。
- 前記基板はGaAsからなり、前記量子井戸層はGaInNAs、GaInNAsSb、GaAsSb、InGaAsのいずれか1つからなることを特徴とする請求項1、3〜5のいずれか1つに記載の面発光レーザ素子。
- 前記基板はInPからなり、前記量子井戸層はGaInAsP、AlGaInAs、GaInNAsSbのいずれか1つからなることを特徴とする請求項1、3〜5のいずれか1つに記載の面発光レーザ素子。
- 前記基板はGaAsまたはInPからなり、前記量子ドット部はInAsまたはInGaAsからなることを特徴とする請求項2〜5のいずれか1つに記載の面発光レーザ素子。
- 前記歪み活性層の量子井戸層または量子ドット層の数は2〜8であることを特徴とする請求項1〜8のいずれか1つに記載の面発光レーザ素子。
- 前記上部多層膜反射鏡の上面と前記下部多層膜反射鏡の下面との間に積層したトンネル接合層を備えることを特徴とする請求項1〜9のいずれか1つに記載の面発光レーザ素子。
- 前記上部多層膜反射鏡または前記下部多層膜反射鏡は、少なくとも一部が誘電体多層膜からなることを特徴とする請求項1〜10のいずれか1つに記載の面発光レーザ素子。
- レーザ発振波長が1000〜2500nmであることを特徴とする請求項1〜11のいずれか1つに記載の面発光レーザ素子。
- 前記電流狭窄層の非選択酸化部を構成する半導体層が、AlxGa1−xAs(x=0.95〜0.998)からなることを特徴とする請求項1〜12のいずれか1つに記載の面発光レーザ素子。
- 前記電流狭窄層の非選択酸化部を構成する半導体層が、AlAs層とGaAs層とからなる超格子で形成され、該AlAs層と該GaAs層との膜厚比率が95:5から998:2であることを特徴とする請求項1〜12のいずれか1つに記載の面発光レーザ素子。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2010067845A1 (ja) * | 2008-12-10 | 2010-06-17 | 古河電気工業株式会社 | 半導体レーザ素子およびその製造方法 |
JP2010161224A (ja) * | 2009-01-08 | 2010-07-22 | Furukawa Electric Co Ltd:The | 面発光レーザ、面発光レーザアレイ及びその製造方法 |
JP2011238929A (ja) * | 2010-05-10 | 2011-11-24 | Toshiba Corp | 半導体素子、及び半導体素子製造方法 |
JP2012044161A (ja) * | 2010-07-22 | 2012-03-01 | Furukawa Electric Co Ltd:The | 面発光レーザ、光源、および光モジュール |
JP2017204579A (ja) * | 2016-05-12 | 2017-11-16 | スタンレー電気株式会社 | 垂直共振器型発光素子及び垂直共振器型発光素子の製造方法 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5091177B2 (ja) * | 2009-03-19 | 2012-12-05 | 株式会社デンソー | 半導体レーザ構造 |
JP2011216557A (ja) * | 2010-03-31 | 2011-10-27 | Furukawa Electric Co Ltd:The | 面発光レーザ、面発光レーザアレイ、光源、および光モジュール |
JP5633435B2 (ja) * | 2011-03-09 | 2014-12-03 | 日亜化学工業株式会社 | 面発光レーザ素子 |
US8349712B2 (en) * | 2011-03-30 | 2013-01-08 | Technische Universitat Berlin | Layer assembly |
DE102011078176A1 (de) * | 2011-06-28 | 2013-01-03 | Technische Universität Berlin | Elektrooptisches bauelement |
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