Coherent light generators – Particular resonant cavity – Specified cavity component
Reexamination Certificate
2008-11-06
2010-12-21
Harvey, Minsun (Department: 2828)
Coherent light generators
Particular resonant cavity
Specified cavity component
C372S045010, C372S045012, C372S050124, C372S066000, C372S067000
Reexamination Certificate
active
07856046
ABSTRACT:
A surface emitting laser diode includes a ring-shaped first semiconductor layer including an n-type clad layer, a ring-shaped active layer provided on the first semiconductor layer, and a ring-shaped second semiconductor layer which is provided on the active layer and includes a p-type clad layer and a grating layer including grating units continuously arranged in a circumferential direction, each grating unit including a plurality of regions having different refractive indices and being adjacent to each other in the circumferential direction.
REFERENCES:
patent: 5343490 (1994-08-01), McCall
patent: 5790583 (1998-08-01), Ho
patent: 5878070 (1999-03-01), Ho et al.
patent: 7242705 (2007-07-01), Kneissl et al.
patent: 2005/0135453 (2005-06-01), Kneissl et al.
patent: 2007/0086496 (2007-04-01), Tanaka et al.
patent: 2007/0153864 (2007-07-01), Lidorikis et al.
R. Dorn et al. “Sharper Focus for a Radially Polarized Light Beam”. Physical Review Letters vol. 91 No. 23, 2003, p. 233901.
S. Quabis at al., “Focusing Light to a Tighter Spot”. Optics Communications, 2000, pp. 1-7, vol. 179, ELSEVIER.
Harvey Minsun
Rabin & Berdo PC
Rohm & Co., Ltd.
Zhang Yuanda
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