Coherent light generators – Particular resonant cavity – Specified cavity component
Reexamination Certificate
2007-02-13
2007-02-13
Harvey, Minsun (Department: 2828)
Coherent light generators
Particular resonant cavity
Specified cavity component
C372S096000, C372S022000
Reexamination Certificate
active
10701258
ABSTRACT:
A laser apparatus is disclosed utilizing a laser diode having a reflective back facet and a front facet having a reflectance of less than about 1% for emitting an optical beam at a fundamental frequency along an optical path. A collimating lens is provided for collimating the optical beam into a collimated beam. A transmission grating is optically coupled to receive the collimated beam and returns a portion of the collimated beam back into the laser diode by means of diffraction through lens and the laser diode front facet. The laser diode reflective back facet and the transmission grating form an extended laser cavity. In operation, a substantial portion of the collimated beam is transmitted through the transmission grating for producing the laser output beam propagating along the optical path.
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“Diffraction grating” obtained from Wikapedia at http://www.wikapedia.com on Jun. 2, 2006.
Lang Robert J.
Waarts Robert G.
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Golub Marcia A.
Harvey Minsun
JDS Uniphase Corporation
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