发明名称 |
Surface-emitting laser, surface-emitting laser array, optical scanning device, and image forming apparatus |
摘要 |
A disclosed surface-emitting laser includes a substrate (101) and multiple semiconductor layers stacked on the substrate. A normal of the principal plane of the substrate is inclined with respect to one of crystal orientations <1 0 0> toward one of crystal orientations <1 1 1>. The semiconductor layers include a resonator structure (104,106) comprising an active layer (105); and a semiconductor multilayer mirror (107) stacked on said resonator structure. The semiconductor multilayer mirror includes a confined structure where in an electric current passage area is surrounded by an oxidized area (108a) including at least an oxide generated by selective oxidation of a part of a selective oxidation layer (108) containing aluminum. A strain field caused by the oxidation is present at least in a part of the vicinity of the oxidized area. In the strain field, the amount of strain in a first axis direction is different from the amount of strain in a second axis direction. |
申请公布号 |
EP2120303(A2) |
申请公布日期 |
2009.11.18 |
申请号 |
EP20090251308 |
申请日期 |
2009.05.13 |
申请人 |
RICOH COMPANY, LIMITED |
发明人 |
ISHII, TOSHIHIRO;MAKITA, KENGO;JIKUTANI, NAOTO;HARASAKA, KAZUHIRO;SATO, SHUNICHI;SUGAWARA, SATORU |
分类号 |
H01S5/18;G03G15/00;G03G15/04;H01S5/183;H01S5/32;H01S5/42 |
主分类号 |
H01S5/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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