Invention Grant
US09042421B2 Surface emitting laser, surface emitting laser array, and optical apparatus having surface emitting laser array
有权
表面发射激光器,表面发射激光器阵列和具有表面发射激光器阵列的光学装置
- Patent Title: Surface emitting laser, surface emitting laser array, and optical apparatus having surface emitting laser array
- Patent Title (中): 表面发射激光器,表面发射激光器阵列和具有表面发射激光器阵列的光学装置
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Application No.: US13273539Application Date: 2011-10-14
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Publication No.: US09042421B2Publication Date: 2015-05-26
- Inventor: Mitsuhiro Ikuta
- Applicant: Mitsuhiro Ikuta
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2010-233276 20101018
- Main IPC: H01S5/00
- IPC: H01S5/00 ; H01S5/183 ; B82Y20/00 ; H01S5/343

Abstract:
There is provided a surface emitting laser allowing a direction of a far-field pattern (FFP) centroid to be inclined from a normal direction of a substrate providing the surface emitting laser, comprising: a substrate; a lower reflecting mirror, an active layer, an upper reflecting mirror stacked on the substrate; and a surface relief structure located in an upper portion of a light emitting surface of the upper reflecting mirror, the surface relief structure being made of a material allowing at least some beams emitted from the surface emitting laser to be transmitted therethrough, a plurality of regions having a predetermined optical thickness in a normal direction of the substrate being formed in contact with other region in an in-plane direction of the substrate, and a distribution of the optical thickness in the in-plane direction of the substrate is asymmetric to a central axis of the light emitting regions.
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