Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Reexamination Certificate
2011-03-22
2011-03-22
Luu, Thanh X (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
C372S018000, C356S450000
Reexamination Certificate
active
07910871
ABSTRACT:
An injection-locked laser is disclosed. The injection-locked laser comprises a seed laser, an oscillator into which a certain component of light output from the seed laser is injected as seed laser light, a frequency converter which shifts a frequency of the remaining component of the light output from the seed laser, a photodetector which detects light obtained by synthesizing the light output from the oscillator and the light output from the frequency converter, and a controller which controls an optical path length of the oscillator based on a beat signal component contained in the signal output from the photodetector.
REFERENCES:
patent: 6141138 (2000-10-01), Machida et al.
patent: 2001/0020195 (2001-09-01), Patel et al.
patent: 2002/0034198 (2002-03-01), Masuda
patent: 2006/0007418 (2006-01-01), Hamatani et al.
patent: 2006/0097205 (2006-05-01), Kakuchi et al.
patent: 2007/0041409 (2007-02-01), Sudarshanam et al.
patent: 0 875 743 (1998-11-01), None
patent: 6-318759 (1994-11-01), None
patent: 11-101694 (1999-04-01), None
patent: 2004-069333 (2004-03-01), None
Lesage, N. et al.; “Servo-Loop Based on Heterodyne Interferometry for Injection Locking of cw Nd:YAG Lasers”; Optics Communications, North-Holland Publishing Co., Amsterdam, NL, vol. 115, No. 3/4, Mar. 15, 1995, pp. 291-296.
Musha, M. et al.; “Wideband and High Frequency Stabilization of an Injection-Locked Nd:YAG Laser to a High-Finesse Fabry-Perot Cavity”; Optics Letters, OSA, Optical Society of America, Washington DC, US, vol. 22, No. 15, Aug. 1, 1997, pp. 1177-1179.
Communication from European Patent Ofice dated Feb. 28, 2008 ref. EP53217 concerning appln. No. 07120069.5-2222 including European Search Report dated Feb. 8, 2008.
Rahn, L.; “Feedback stabilization of an injection-seeded Nd:YAG laser”; Applied Optics, vol. 24, No. 7, Apr. 1, 1985, pp. 940-942.
Korean Office Action issued Aug. 4, 2008, concerning the corresponding Patent Application No. 10-2007-0112412.
Canon Kabushiki Kaisha
Legasse Jr. Francis M
Luu Thanh X
Rossi Kimms & McDowell LLP
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