Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2009-09-15
2011-10-04
Stultz, Jessica (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S046010, C372S046013, C372S050110, C372S087000
Reexamination Certificate
active
08031755
ABSTRACT:
A surface emitting semiconductor laser includes: a substrate; a first semiconductor multilayer reflection mirror of a first conduction type; an active region; a second semiconductor multilayer reflection mirror of a second conduction type; a first selectively oxidized layer that is formed in one of the first and second semiconductor multilayer reflection mirrors and includes a first oxidized region selectively oxidized, and a first conductive region surrounded by the first oxidized region; and a second selectively oxidized layer that is formed in one of the first and second semiconductor multilayer reflection mirrors and includes a second oxidized region selectively oxidized, and a second conductive region surrounded by the second oxidized region. A first semiconductor layer next to the first selectively oxidized layer has an Al composition greater than that of a second semiconductor layer next to the second selectively oxidized layer, the first conductive region having a size smaller than that of the second conductive region.
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Carter Michael
Fildes & Outland, P.C.
Fuji 'Xerox Co., Ltd.
Stultz Jessica
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