Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2011-04-05
2011-04-05
Rodriguez, Armando (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S050124
Reexamination Certificate
active
07920615
ABSTRACT:
A surface-emitting laser diode capable of being manufactured easily at low cost, and capable of stabilizing the polarization direction of laser light in one direction and achieving higher output is provided. A light emission section20in which a lower first DBR mirror layer12, a lower second DBR mirror layer13, a lower spacer layer14, an active layer15including a light emission region15A, an upper spacer layer16, a current confinement layer17, an upper DBR mirror layer18and a contact layer19are laminated in this order is included on a substrate10. The lower first DBR mirror layer12includes an oxidation section30nonuniformly distributed in a direction rotating around the light emission region15A in a periphery of a region corresponding to the light emission region15A. The oxidation section30includes a pair of multilayer films31and32, and is formed by oxidizing a low refractive index layer12A. Thereby, an anisotropic stress according to nonuniform distributions of the multilayer films31and32is generated in the active layer15.
REFERENCES:
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International Search Report; International Application No. PCT/JP2007/061281; Dated: Aug. 14, 2007.
Maeda Osamu
Shiozaki Masaki
Yamaguchi Norihiko
Yamauchi Yoshinori
Rader & Fishman & Grauer, PLLC
Rodriguez Armando
Sony Corporation
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