JP7190865B2 - 垂直共振器型発光素子 - Google Patents
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- H01S5/34333—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 with a well layer based on Ga(In)N or Ga(In)P, e.g. blue laser
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Description
EM、EMA、EMB、EMC、EM1、EM2、EM3 発光構造層
14 発光層
LR 低抵抗領域
Claims (9)
- 基板と、
前記基板上に形成された第1の多層膜反射鏡と、
前記第1の多層膜反射鏡上に形成され、発光層を含む発光構造層と、
前記発光構造層上に形成され、前記第1の多層膜反射鏡との間で共振器を構成する第2の多層膜反射鏡と、を有し、
前記発光構造層は、前記第1の多層膜反射鏡と前記第2の多層膜反射鏡との間において環状に設けられた低抵抗領域と、前記低抵抗領域の内側に形成され、前記低抵抗領域よりも高い電気抵抗を有する高抵抗領域と、を有し、
前記共振器は、前記発光構造層の前記低抵抗領域に対応して前記第1及び第2の多層膜反射鏡間に延びる環状領域と、前記環状領域の内側において前記高抵抗領域に対応して設けられた中央領域と、前記環状領域の外側に設けられた外側領域と、を有し、
前記中央領域及び前記外側領域は、前記環状領域よりも低い等価屈折率を有することを特徴とする垂直共振器型発光素子。 - 前記発光層から放出される光の波長λとし、前記波長λに対する前記環状領域の等価屈折率を屈折率nλとし、445nmの波長に対する前記環状領域の等価屈折率を屈折率n445とした場合、前記低抵抗領域の幅W1は、W1≧2.85×(λ/0.445)×(nλ/n445)[μm]の関係を満たすことを特徴とする請求項1に記載の垂直共振器型発光素子。
- 前記低抵抗領域の内側の前記高抵抗領域の幅は、前記発光層でのキャリアの拡散長の2倍以上であることを特徴とする請求項1又は2に記載の垂直共振器型発光素子。
- 前記発光構造層は、前記第1の多層膜反射鏡上に形成された第1の半導体層と、前記第1の半導体層上に形成された前記発光層と、前記発光層上に形成され、前記第1の半導体層とは反対の導電型を有する第2の半導体層と、を有し、
前記第2の半導体層は、上面と、前記上面から環状に突出する凸部とを有し、
前記第2の半導体層の前記上面は、絶縁層に覆われることで前記高抵抗領域として機能し、
前記第2の半導体層の前記凸部は、電極に接触することで前記低抵抗領域として機能することを特徴とする請求項1乃至3のいずれか1つに記載の垂直共振器型発光素子。 - 前記発光構造層は、前記第1の多層膜反射鏡上に形成された第1の半導体層と、前記第1の半導体層上に形成された前記発光層と、前記発光層上に形成され、前記第1の半導体層とは反対の導電型を有する第2の半導体層と、を有し、
前記第2の半導体層は、環状の領域を残してイオンが注入されたイオン注入領域を有し、
前記第2の半導体層の前記イオンが注入されていない領域は、前記低抵抗領域として機能することを特徴とする請求項1乃至3のいずれか1つに記載の垂直共振器型発光素子。 - 前記発光構造層は、前記第1の多層膜反射鏡上に形成された第1の半導体層と、前記第1の半導体層上に形成された前記発光層と、前記発光層上に形成され、前記第1の半導体層とは反対の導電型を有する第2の半導体層と、を有し、
前記第2の半導体層は、環状の領域を残して前記第2の半導体層の不純物が不活性化された不活性化領域を有し、
前記第2の半導体層の前記不純物が不活性化されていない領域は、前記低抵抗領域として機能することを特徴とする請求項1乃至3のいずれか1つに記載の垂直共振器型発光素子。 - 前記発光構造層は、前記第1の多層膜反射鏡上に形成された第1の半導体層と、前記第1の半導体層上に形成された前記発光層と、前記発光層上に形成され、前記第1の半導体層とは反対の導電型を有する第2の半導体層と、前記第2の半導体層上に環状に形成され、前記低抵抗領域として機能するトンネル接合層と、を有することを特徴とする請求項1乃至3のいずれか1つに記載の垂直共振器型発光素子。
- 前記第2の半導体層の層厚は、前記発光層でのキャリアの拡散長の2倍以下であることを特徴とする請求項4乃至7のいずれか1つに記載の垂直共振器型発光素子。
- 前記環状領域は、前記発光構造層上面に垂直な方向から見たときに楕円環状、矩形環状、十字を囲む環状のいずれか一つの形状を有することを特徴とする請求項1に記載の垂直共振器型発光素子。
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JP2018196393A JP7190865B2 (ja) | 2018-10-18 | 2018-10-18 | 垂直共振器型発光素子 |
US17/285,859 US20210351568A1 (en) | 2018-10-18 | 2019-10-07 | Vertical cavity surface emitting device |
PCT/JP2019/039455 WO2020080160A1 (ja) | 2018-10-18 | 2019-10-07 | 垂直共振器型発光素子 |
CN201980068659.1A CN112913094B (zh) | 2018-10-18 | 2019-10-07 | 垂直谐振器式发光元件 |
EP19874482.3A EP3869643B1 (en) | 2018-10-18 | 2019-10-07 | Vertical resonator-type light-emitting element |
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JP7166871B2 (ja) * | 2018-10-18 | 2022-11-08 | スタンレー電気株式会社 | 垂直共振器型発光素子 |
JP7291497B2 (ja) * | 2019-02-21 | 2023-06-15 | スタンレー電気株式会社 | 垂直共振器型発光素子 |
US20240162685A1 (en) | 2022-11-07 | 2024-05-16 | Ii-Vi Delaware, Inc. | Vertical cavity surface emitting laser (vcsel) emitter with guided-antiguided waveguide |
CN117712830B (zh) * | 2024-02-05 | 2024-04-30 | 南昌凯迅光电股份有限公司 | 一种垂直腔面发射激光器及其制作方法 |
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US20210351568A1 (en) | 2021-11-11 |
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CN112913094B (zh) | 2024-06-11 |
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