JP2019075529A - 垂直共振器面発光レーザ薄型ウエハの反り制御 - Google Patents
垂直共振器面発光レーザ薄型ウエハの反り制御 Download PDFInfo
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- H01S5/2054—Methods of obtaining the confinement
- H01S5/2059—Methods of obtaining the confinement by means of particular conductivity zones, e.g. obtained by particle bombardment or diffusion
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Abstract
Description
Claims (20)
- 垂直共振器面発光レーザ(VCSEL)ウエハであって、
基板層と、
前記基板層上のエピタキシャル層と、
前記VCSELウエハを薄型化した後の前記VCSELウエハの反りを制御するための歪補償層と、
を含み、、
前記歪補償層は、前記基板層のエピタキシャル側に配置され、かつ、
前記歪補償層は、前記VCSELウエハのエピタキシャル層内の圧縮歪みを少なくとも部分的に補償することによって、前記薄型化されたVCSELウエハの反りを制御する、VCSELウエハ。 - 請求項1に記載のVCSELウエハであって、前記歪補償層は、約0.2μm〜約0.7μmの範囲の厚さを有する金属層である、VCSELウエハ。
- 請求項1に記載のVCSELウエハであって、前記歪補償層は、ニッケル−クロム(NiCr)層、プラチナ(Pt)層、またはクロム(Cr)層である、VCSELウエハ。
- 請求項1に記載のVCSELウエハであって、前記歪補償層は、アノード層の部分の間に配置される、VCSELウエハ。
- 請求項4に記載のVCSELウエハであって、前記歪補償層と前記アノード層の少なくとも一部との間の接着の促進に関連する接着層が、前記歪補償層と前記アノード層の少なくとも一部との間に配置される、VCSELウエハ。
- 請求項5に記載のVCSELウエハであって、前記接着層は、約0.005μm〜約0.03μmの範囲の厚さを有するチタン(Ti)層である、VCSELウエハ。
- 請求項4に記載のVCSELウエハであって、前記歪補償層は、前記歪補償層に関連する電気抵抗を減少または最小化するために、前記アノード層の一部と部分的にオーバーラップしている、VCSELウエハ。
- 請求項1に記載のVCSELウエハであって、前記歪補償層は、前記VCSELウエハの表面の大部分を被覆している、VCSELウエハ。
- 請求項1に記載のVCSELウエハであって、前記歪補償層は、誘電性パッシベーション/ミラー層に少なくとも部分的に埋め込まれている、VCSELウエハ。
- 請求項1に記載のVCSELウエハであって、前記歪補償層は、前記VCSELウエハのVCSELによって光を放出する開口部を含むようにパターニングされている、VCSELウエハ。
- 請求項10に記載のVCSELウエハであって、前記歪補償層の厚さは、前記歪補償層によって提供され、前記開口部によって引き起こされる、歪補償の減少を補償するように選択される、VCSELウエハ。
- 請求項1に記載のVCSELウエハであって、前記歪補償層は、前記歪補償層の応力−厚さの積に基づく歪補償を提供する、VCSELウエハ。
- 請求項1に記載のVCSELウエハであって、前記歪補償層の一体化された応力−厚さの積は、少なくとも約400メガパスカル−メートル(MPa−m)である、VCSELウエハ。
- 請求項1に記載のVCSELウエハであって、前記VCSELウエハのVCSELは、底部放射VCSELである、VCSELウエハ。
- 垂直共振器面発光レーザ(VCSEL)であって、
基板層と、
前記基板層上のエピタキシャル層と、
薄型化されたVCSELウエハのエピタキシャル層の圧縮歪みを少なくとも部分的に補償することによって前記薄型化されたVCSELウエハの反りを制御するための歪補償層と、
を含み、
前記歪補償層は、前記基板層のエピタキシャル側のアノード層の部分の間に配置され、または、
前記歪補償層は、前記基板のエピタキシャル側の誘電性パッシベーション/ミラー層に少なくとも部分的に埋め込まれている、VCSEL。 - 請求項15に記載のVCSELであって、前記歪補償層は、約0.2μm〜約0.7μmの範囲の厚さを有する金属層である、VCSEL。
- 請求項15に記載のVCSELであって、前記歪補償層は、ニッケル−クロム(NiCr)層、プラチナ(Pt)層、またはクロム(Cr)層である、VCSEL。
- 請求項15に記載のVCSELであって、前記歪補償層は、VCSELウエハの表面の大部分を被覆している、VCSEL。
- 請求項15に記載のVCSELであって、前記歪補償層は、前記VCSELによって光を放出する開口部を含むようにパターニングされている、VCSEL。
- 面発光レーザの薄型化されたウエハであって、
基板層上のエピタキシャル層と、
前記薄型化されたウエハのエピタキシャル層の圧縮歪みを少なくとも部分的に補償することによって、前記薄型化されたウエハの反りを制御するための歪補償層と、
を含み、
前記歪補償層は、前記基板層のエピタキシャル側に配置され、かつ、
前記歪補償層は、
前記薄型化されたウエハのアノード層の部分の間に配置されるか、または、
前記薄型化されたウエハの誘電性パッシベーション/ミラー層に少なくとも部分的に埋め込まれるか、
のうちの一方である、面発光レーザの薄型化されたウエハ。
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