JP2023029501A - 波長変換装置及び発光装置 - Google Patents
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Abstract
Description
心領域R1おいて50nmの層厚を有し、周辺領域R2において30nmの層厚を有するp-GaN層を有する。透光絶縁層32は、p型半導体層31の凸部31Aの上面を除くp型半導体層31の表面上に、20nmの層厚で形成されたSiO2層からなる。透光電極膜16は、20nmの層厚を有するITO膜からなる。また、絶縁層33は、40nmの層厚を有するNb2O5層からなる。
11 基板
12 第1の多層膜反射鏡
EM 半導体構造層
14 発光層
19、34 第2の多層膜反射鏡
LG 光ガイド層
Claims (8)
- 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、発光層を含む半導体構造層と、
前記半導体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、
前記第1及び第2の多層膜反射鏡間において前記基板に垂直な方向に延びかつ前記発光層の発光中心を含む中心領域と、前記中心領域の周囲に設けられかつ前記中心領域よりも前記第1及び第2の多層膜反射鏡間の光学距離が小さい周辺領域と、を含む光ガイド構造を形成する光ガイド層と、を有し、
前記第2の多層膜反射鏡は、前記中心領域及び前記周辺領域に亘る平坦性を有することを特徴とする垂直共振器型発光素子。 - 前記光ガイド層は、前記中心領域において前記周辺領域よりも高い等価屈折率を有するように構成されてい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。
- 前記光ガイド層は、前記半導体構造層と前記第2の多層膜反射鏡との間に設けられ、前記中心領域に凸部を有する第1の透光絶縁層と、前記周辺領域の前記第1の透光絶縁層上に前記光ガイド層の上面を平坦化するように形成され、前記第1の透光絶縁層よりも小さな屈折率を有する第2の透光絶縁層と、を含む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。
- 前記半導体構造層は、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、前記中心領域に凸部を有する第2の半導体層と、を有し、
前記光ガイド層は、前記第2の半導体層と、前記周辺領域の前記第2の半導体層上に前記光ガイド層の上面を平坦化するように形成され、前記第2の半導体層よりも小さな屈折率を有する透光絶縁層と、を含む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。 - 前記半導体構造層は、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た第2の半導体層と、を有し、
前記第1の多層膜反射鏡は、第1の半導体膜と、前記第1の半導体膜及び前記半導体構造層の前記第1の半導体層よりも小さな屈折率を有する第2の半導体膜とが複数回交互に積層された構造を有し、
前記第1の多層膜反射鏡における最も前記半導体構造層側の前記第2の半導体膜は、前記中心領域に開口部を有し、
前記半導体構造層における前記第1の半導体層は、前記第1の多層膜反射鏡における前記第2の半導体膜の前記開口部を埋め込む埋込部を有し、
前記光ガイド層は、前記第1の多層膜反射鏡の最も前記半導体構造層側の前記第2の半導体膜と、前記半導体構造層の前記第1の半導体層とを含む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。 - 前記半導体構造層は、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た第2の半導体層と、を有し、
前記光ガイド層は、前記半導体構造層と前記第2の多層膜反射鏡との間における前記中心領域に形成された第3の半導体層と、前記光ガイド層の上面を平坦化するように前記周辺領域に形成され、不純物を有することによって前記中心領域の平均屈折率よりも小さな屈折率を有する第4の半導体層と、を含む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。 - 前記第1及び第2の多層膜反射鏡間に設けられ、前記半導体構造層内の電流路を狭窄し、前記発光層の前記発光中心を画定する電流狭窄層を有し、
前記電流狭窄層は、前記電流路の開口部を形成し、5.5μm以下の開口径を有する電流狭窄部を有し、
前記中心領域における前記第1及び第2の多層膜反射鏡間の距離は、前記発光層から放出された光の前記中心領域の媒質内における波長の4倍以上であることを特徴とする請求項1乃至6のいずれか1つに記載の垂直共振器型発光素子。 - 前記半導体構造層内の電流路を狭窄し、前記発光層の前記発光中心を画定する電流狭窄層を有し、
前記電流狭窄層は、トンネル接合層を有することを特徴とする請求項1乃至7に記載の垂直共振器型発光素子。
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| WO2025063048A1 (ja) * | 2023-09-20 | 2025-03-27 | スタンレー電気株式会社 | 垂直共振器型発光素子及び発光装置 |
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| KR102551471B1 (ko) * | 2018-07-27 | 2023-07-06 | 쑤저우 레킨 세미컨덕터 컴퍼니 리미티드 | 표면발광 레이저소자 및 이를 포함하는 발광장치 |
| 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 |
| JP7190865B2 (ja) * | 2018-10-18 | 2022-12-16 | スタンレー電気株式会社 | 垂直共振器型発光素子 |
| JP7258591B2 (ja) | 2019-02-21 | 2023-04-17 | スタンレー電気株式会社 | 垂直共振器型発光素子 |
| JP7288360B2 (ja) | 2019-07-01 | 2023-06-07 | スタンレー電気株式会社 | 垂直共振器型発光素子 |
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