JP2013197593A - 高反射率/帯域制限反射器を内蔵する光励起面発光レーザ - Google Patents
高反射率/帯域制限反射器を内蔵する光励起面発光レーザ Download PDFInfo
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Abstract
【解決手段】中心レーザ波長の放射を放出するように構成された半導体利得領域と、利得領域の方へ向けて中心ポンプ波長のポンプ放射ビームを放出するように構成されたポンプ光源と、ポンプ放射ビーム内に配置した分布ブラッグ反射器を含む第1の反射器と、利得領域を第1の反射器とで挟むように配置した第2の反射器と、を含む。第1の反射器は、前記中心レーザ波長に中心がある約60nm未満の帯域幅全域で約90%よりも大きい反射率を有しており、また、第1の反射器は、前記中心ポンプ波長において約50%未満の反射率を有する。場合によっては、反射器が3/4波長の分布ブラッグ反射器であってもよい。
【選択図】図1
Description
ここで、λlはレーザ放射の中心(ピーク)波長であり、n(λl)はレーザ放射の波長における層材料の屈折率である。
Claims (10)
- 中心レーザ波長の放射を放出するように構成された半導体利得領域と、
前記利得領域の方へ向けて中心ポンプ波長のポンプ放射ビームを放出するように構成されたポンプ光源と、
前記ポンプ放射ビーム内に配置した分布ブラッグ反射器(DBR)を含む第1の反射器であって、前記第1の反射器は、前記中心レーザ波長に中心がある約60nm未満の帯域幅全域で約90%よりも大きい反射率を有しており、また、前記第1の反射器は、前記中心ポンプ波長において約50%未満の反射率を有する、第1の反射器と、
第2の反射器であって、前記利得領域は前記第1の反射器と前記第2の反射器の間に配置してある、第2の反射器と、を含む
レーザ構造。 - 前記第1の反射器が多くの層対を含み、各層対は第1の層と第2の層とを含み、前記第1の層の光学的厚さが前記中心レーザ波長の3/4であり、前記第2の層の光学的厚さが前記中心レーザ波長の3/4である、請求項1に記載のレーザ構造。
- 層対の個数が約6よりも大きい、請求項2に記載のレーザ構造。
- 前記第1の反射器が、
第1の熱伝導率を有する第1の部分と、
前記第1の熱伝導率よりも小さい第2の熱伝導率を有する第2の部分と、を含む、請求項1に記載のレーザ構造。 - 前記中心ポンプ放射波長が約370〜約530nmの間にあり、前記ピークレーザ波長が約390〜約550nmの範囲内にある、請求項1に記載のレーザ構造。
- 前記ポンプ放射ビームが、前記第1の反射器の表面上に、前記第1の反射器の前記表面の法線に対して所定の角度で入射する、請求項1に記載のレーザ構造。
- 前記半導体利得領域が、第1の面および第2の面と、
前記利得領域の方へ向けて中心ポンプ波長のポンプ放射ビームを放出するように構成されたポンプ光源と、
前記利得領域の前記第1の面に隣接して、前記ポンプ放射ビーム内に前記第1の反射器が配置してあり、
前記利得領域の前記第2の面に隣接して配置した反射面と、
前記第2の反射器と前記反射面の間に空隙と、を有している、請求項1に記載のレーザ構造。 - 前記空隙の厚さを調節するように構成された位置決め要素をさらに含む、請求項7に記載のレーザ構造。
- 前記ポンプ放射ビームが複数のモードを含み、前記レーザ放射が単一のモードを含む、請求項7に記載のレーザ構造。
- 中心レーザ波長の放射を放出するように構成された半導体利得領域と、第1および第2の反射器と、前記利得領域に隣接して配置した反射面と、を含むレーザを操作することであって、前記第1および第2の反射器は主要なレーザキャビティを形成し、前記反射面および前記第2の反射器は補助的な光キャビティを形成する、操作することと、
所定の入力モード数を有するポンプ放射を放出するように構成されたポンプ光源を操作することであって、前記ポンプ放射は前記半導体利得領域の方へ向けて、前記半導体利得領域内に少なくとも部分的に吸収さる、操作することと、
前記入力モード数よりも少ない出力モード数を前記レーザが出力するまで、前記反射面と前記第2の反射器の間の空隙を調節することと、を含む、
方法。
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US13/427,335 | 2012-03-22 | ||
US13/427,335 US9124062B2 (en) | 2012-03-22 | 2012-03-22 | Optically pumped surface emitting lasers incorporating high reflectivity/bandwidth limited reflector |
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DE (1) | DE102013204964B4 (ja) |
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US10084286B2 (en) | 2014-03-14 | 2018-09-25 | Ricoh Company, Ltd. | Surface emitting laser, surface emitting laser element and atomic oscillator |
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DE102013204964A1 (de) | 2013-09-26 |
TWI569549B (zh) | 2017-02-01 |
CN103326241A (zh) | 2013-09-25 |
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TW201345096A (zh) | 2013-11-01 |
US20130250986A1 (en) | 2013-09-26 |
JP6315887B2 (ja) | 2018-04-25 |
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US9124062B2 (en) | 2015-09-01 |
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