JP5585940B2 - 面発光レーザ素子、面発光レーザアレイ、光走査装置、画像形成装置及び面発光レーザ素子の製造方法 - Google Patents
面発光レーザ素子、面発光レーザアレイ、光走査装置、画像形成装置及び面発光レーザ素子の製造方法 Download PDFInfo
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Description
Claims (10)
- 基板上に下部反射鏡、活性層を含む共振器構造体、及び酸化物が電流通過領域を取り囲んでいる狭窄構造体を含む上部反射鏡が積層されているメサ構造体の発光部を有し、該発光部における出射領域は、前面が透明な誘電体で被覆され、相対的に反射率が高い部分と低い部分とを有する面発光レーザ素子において、
前記メサ構造の上面における辺縁部は誘電体膜で被覆され、前記辺縁部の誘電体膜は2層からなり、SiO 2 からなる下側の誘電体膜の上面及び側面は、SiNからなる上側の誘電体膜に完全に覆われている面発光レーザ素子。 - 前記発光部の出射領域の誘電体膜とメサ構造の上面における辺縁部の誘電体膜とはコンタクト領域により分離され、
前記コンタクト領域は、電極が形成されてコンタクト層と接触し、
前記電極と前記上面における辺縁部の下側の誘電体膜とは接触していないことを特徴とする請求項1に記載の面発光レーザ素子。 - 前記下側の誘電体膜は、ウエットエッチングの際のエッチングレートが前記上側の誘電体膜よりも大きいことを特徴とする請求項1又は2に記載の面発光レーザ素子。
- 請求項1〜3のいずれか一項に記載の面発光レーザ素子が集積された面発光レーザアレイ。
- 光によって被走査面を走査する光走査装置であって、
請求項1〜3のいずれか一項に記載の面発光レーザ素子を有する光源と、
前記光源からの光を偏向する偏向器と、
前記偏向器で偏向された光を前記被走査面上に集光する走査光学系と、を備える光走査装置。 - 光によって被走査面を走査する光走査装置であって、
請求項4に記載の面発光レーザアレイを有する光源と、
前記光源からの光を偏向する偏向器と、
前記偏向器で偏向された光を前記被走査面上に集光する走査光学系と、を備える光走査装置。 - 少なくとも1つの像担持体と、
前記少なくとも1つの像担持体に対して画像情報に応じて変調された光を走査する少なくとも1つの請求項5又は6に記載の光走査装置と、を備える画像形成装置。 - 前記画像情報は、多色のカラー画像情報であることを特徴とする請求項7に記載の画像形成装置。
- 基板上に下部反射鏡、活性層を含む共振器構造体、及び被選択酸化層を含む上部反射鏡が積層された積層体に発光部となるメサ構造体を形成し、該発光部に酸化物が電流通過領域を取り囲んでいる狭窄構造体、及び相対的に反射率が高い部分と低い部分とを含む出射領域を有する面発光レーザ素子の製造方法であって、
前記メサ構造体を形成するのに先立って、前記積層体の上面に、透明な第1の誘電体膜を形成する工程と、
前記第1の誘電体膜の上面に、前記メサ構造体の外形を規定する一のレジストパターン、及び前記出射領域における反射率が高い部分を規定する他のレジストパターンを同時に形成する工程と、
前記一及び他のレジストパターンを含む第1のレジストパターンをエッチングマスクとして前記第1の誘電体膜をエッチングする工程と、
前記出射領域の全体に対応する領域を保護する第2のレジストパターンを形成する工程と、
前記メサ構造体を形成する工程と、
前記狭窄構造体を形成する工程と、
前記狭窄構造体が形成された積層体の上面に、前記第1の誘電体膜よりもウエットエッチングレートが小さい第2の誘電体膜を形成する工程と、
前記第1の誘電体膜を完全に覆うように前記第2の誘電体膜をエッチングしてコンタクトホールを形成する工程と、
前記メサ構造体の上面の前記出射領域を除いた部分を覆うように電極を形成する工程と、を含む面発光レーザ素子の製造方法。 - 前記第2の誘電体膜は、プラズマCVD法で形成された膜であり、50%フッ化水素酸と40%フッ化アンモニウム水溶液を1対10で混合したエッチング液によるエッチングレートは、50nm/min〜80nm/minであることを特徴とする請求項9に記載の面発光レーザ素子の製造方法。
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JP2011026719A JP5585940B2 (ja) | 2010-04-22 | 2011-02-10 | 面発光レーザ素子、面発光レーザアレイ、光走査装置、画像形成装置及び面発光レーザ素子の製造方法 |
US13/084,942 US8498319B2 (en) | 2010-04-22 | 2011-04-12 | Surface emitting laser device, surface emitting laser array, optical scanning device, image forming apparatus, and manufacturing method of surface emitting laser device |
EP11162686.7A EP2381544B1 (en) | 2010-04-22 | 2011-04-15 | Surface emitting laser device, surface emitting laser array, optical scanning device, image forming apparatus, and manufacturing method of surface emitting laser device |
US13/915,921 US8989231B2 (en) | 2010-04-22 | 2013-06-12 | Surface emitting laser device, surface emitting laser array, optical scanning device, image forming apparatus, and manufacturing method of surface emitting laser device |
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JP5950523B2 (ja) | 2010-10-16 | 2016-07-13 | キヤノン株式会社 | 面発光レーザ、面発光レーザアレイ、画像形成装置 |
JP2012209534A (ja) | 2011-03-17 | 2012-10-25 | Ricoh Co Ltd | 面発光レーザ素子、原子発振器及び面発光レーザ素子の検査方法 |
JP5929259B2 (ja) | 2011-05-17 | 2016-06-01 | 株式会社リコー | 面発光レーザ素子、光走査装置及び画像形成装置 |
JP5999303B2 (ja) * | 2011-06-24 | 2016-09-28 | 株式会社リコー | 面発光レーザアレイ及び画像形成装置 |
JP6303255B2 (ja) | 2011-12-02 | 2018-04-04 | 株式会社リコー | 面発光レーザ素子及び原子発振器 |
JP2013157473A (ja) * | 2012-01-30 | 2013-08-15 | Canon Inc | 面発光レーザ |
JP6085956B2 (ja) | 2012-03-09 | 2017-03-01 | 株式会社リコー | 面発光レーザアレイ素子、光走査装置及び画像形成装置 |
JP6102525B2 (ja) | 2012-07-23 | 2017-03-29 | 株式会社リコー | 面発光レーザ素子及び原子発振器 |
JP6107089B2 (ja) | 2012-11-30 | 2017-04-05 | 株式会社リコー | 面発光レーザ素子及び原子発振器 |
JP2014127511A (ja) * | 2012-12-25 | 2014-07-07 | Ricoh Co Ltd | 面発光レーザ素子及びその製造方法、面発光レーザアレイ、光走査装置、及び画像形成装置 |
JP2015026637A (ja) * | 2013-07-24 | 2015-02-05 | 株式会社リコー | 面発光レーザ素子、面発光レーザアレイ、光走査装置、画像形成装置及び面発光レーザ素子の製造方法 |
JP6241919B2 (ja) * | 2013-09-30 | 2017-12-06 | 住友電工デバイス・イノベーション株式会社 | 光学半導体デバイス |
CN103726059B (zh) * | 2013-12-30 | 2016-01-20 | 北方工业大学 | 一种镁合金表面复合膜的制备方法 |
CA3002392A1 (en) | 2015-10-30 | 2017-05-04 | Seurat Technologies, Inc. | Additive manufacturing system and method |
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JP7309519B2 (ja) | 2019-08-13 | 2023-07-18 | 日本ルメンタム株式会社 | 半導体光素子 |
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EP2381544B1 (en) | 2015-03-04 |
US8498319B2 (en) | 2013-07-30 |
JP2012109510A (ja) | 2012-06-07 |
US8989231B2 (en) | 2015-03-24 |
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