发明授权
US07978739B2 Surface emitting laser element, surface emitting laser array, optical scanning device, and image forming apparatus
有权
表面发射激光元件,表面发射激光器阵列,光学扫描装置和成像装置
- 专利标题: Surface emitting laser element, surface emitting laser array, optical scanning device, and image forming apparatus
- 专利标题(中): 表面发射激光元件,表面发射激光器阵列,光学扫描装置和成像装置
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申请号: US12481080申请日: 2009-06-09
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公开(公告)号: US07978739B2公开(公告)日: 2011-07-12
- 发明人: Satoru Sugawara , Toshihiro Ishii , Kazuhiro Harasaka , Shunichi Sato
- 申请人: Satoru Sugawara , Toshihiro Ishii , Kazuhiro Harasaka , Shunichi Sato
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Cooper & Dunham LLP
- 优先权: JP2008-153382 20080611; JP2009-092551 20090407
- 主分类号: H01S3/10
- IPC分类号: H01S3/10 ; H01S5/00
摘要:
In a surface emitting laser element, on an inclined substrate, a resonator structural body including an active layer, and a lower semiconductor DBR and an upper semiconductor DBR sandwiching the resonator structural body are stacked. A shape of a current passing-through region in an oxide confinement structure of the upper semiconductor DBR is symmetrical to an axis passing through a center of the current passing-through region parallel to an X axis and symmetrical to an axis passing through the center of the current passing-through region parallel to a Y axis, and a thickness of an oxidized layer surrounding the current passing-through region is greater in the +Y direction than in the +X and −X directions. An opening width of a light outputting section in the X axis direction is smaller than another opening width of the light outputting section in the Y axis direction.
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