发明名称 |
SURFACE-EMITTING LASER, SURFACE-EMITTING LASER ARRAY, OPTICAL SCANNING APPARATUS, AND IMAGE FORMING APPARATUS |
摘要 |
A surface-emitting laser includes a substrate; a lower semiconductor multilayer film reflector disposed on the substrate; a resonator structure including an active layer and disposed on the lower semiconductor multilayer film reflector; and an upper semiconductor multilayer film reflector disposed on the resonator structure. The second semiconductor multilayer film reflector includes a confinement structure in which a current passage region is surrounded by an oxidized portion of a selectively oxidized layer containing aluminum. An emission region includes a central portion and a peripheral portion, the peripheral portion being covered with a transparent dielectric film whose reflectivity is lower than a reflectivity of the central portion. The selectively oxidized layer has a thickness in a range from 30 nm to 40 nm. The temperature at which an oscillation threshold current is minimized is 60° C. or lower. |
申请公布号 |
KR101357925(B1) |
申请公布日期 |
2014.02.03 |
申请号 |
KR20127006717 |
申请日期 |
2010.09.14 |
申请人 |
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发明人 |
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分类号 |
G03G15/00;H01S5/183;H01S5/42;H04N1/04 |
主分类号 |
G03G15/00 |
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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