Coherent light generators – Particular component circuitry – Optical pumping
Reexamination Certificate
2005-01-18
2005-01-18
Wong, Don (Department: 2821)
Coherent light generators
Particular component circuitry
Optical pumping
C372S022000, C372S005000
Reexamination Certificate
active
06845113
ABSTRACT:
It is an object of the present invention to provide a short-wavelength coherent light source that includes a semiconductor laser and a wavelength converting device and is controlled to have a desired wavelength. The coherent light source includes the following: a semiconductor laser having a first wavelength; an optical waveguide-type QPM-SHG device used as a wavelength converting device for converting the wavelength of the semiconductor laser by half; a wavelength separating function; a diffraction grating; and a photo-detector. The semiconductor laser beam acting as fundamental light is separated with the wavelength separating function, and the wavelength is controlled with the diffraction grating. Thus, the wavelength of harmonic light generated by wavelength conversion is controlled to a desired wavelength.
REFERENCES:
patent: 3927945 (1975-12-01), Bates
patent: 4939388 (1990-07-01), Eaton et al.
patent: 5202741 (1993-04-01), Snyder
patent: 5237636 (1993-08-01), Harada
patent: 5301059 (1994-04-01), Kitaoka et al.
patent: 5835650 (1998-11-01), Kitaoka et al.
patent: 5936985 (1999-08-01), Yamamoto et al.
patent: 5960259 (1999-09-01), Kitaoka et al.
patent: 6067393 (2000-05-01), Kitaoka et al.
patent: 6069904 (2000-05-01), Kitaoka et al.
patent: 6370169 (2002-04-01), Imajuku et al.
patent: 5-165388 (1993-07-01), None
patent: 3036254 (2000-02-01), None
“Milliwatt-order blue-light generation in a periodically domain-inverted LiTaO3waveguide”; Yamamoto et al.; Optical Letters, vol. 16, No. 15, pp 1156-1158, Aug. 1, 1991.
“Holographic Data Storage”; Holographic memories, California Institute of Technology; The 1st Optware Meeting on Jun. 19, 2000.
Kasazumi Ken'ichi
Kitaoka Yasuo
Yamamoto Kazuhisa
Matsushita Electric - Industrial Co., Ltd.
Merchant & Gould P.C.
Vy Hung Tran
LandOfFree
Coherent light source and recording/reproducing apparatus... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Coherent light source and recording/reproducing apparatus..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherent light source and recording/reproducing apparatus... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3389157