Coherent light generators – Particular resonant cavity – Specified cavity component
Reexamination Certificate
2011-06-28
2011-06-28
Harvey, Minsun (Department: 2828)
Coherent light generators
Particular resonant cavity
Specified cavity component
C372S029020, C372S072000, C359S333000
Reexamination Certificate
active
07970039
ABSTRACT:
In a first embodiment, the invention makes use of a Neodymium doped YAG (Nd:YAG) gain medium placed in an optical resonant cavity formed by two mirrors. Power extraction is maximized for a specific laser cavity. In particular the concave curvature on the rod ends contributes a negative lensing component to modify the strength of the thermal lens. In a second embodiment the present invention uses an amplifier rod medium with curved ends to act as lensing elements to collect emission from the laser gain medium and/or oscillator described in the first embodiment of the invention. The combination of thermal lens and curved rod ends produces a lensing effect which allows light to be directly coupled from a laser. In addition, variation of the input pump power allows for control of the thermal lens formed within the amplifier rod.
REFERENCES:
patent: 4675872 (1987-06-01), Popek et al.
patent: 4887270 (1989-12-01), Austin
patent: 5237584 (1993-08-01), Shannon et al.
patent: 5268913 (1993-12-01), Sakowski et al.
patent: 5349603 (1994-09-01), Kaneda et al.
patent: 5351251 (1994-09-01), Hodgson
patent: 5699376 (1997-12-01), Richmond
patent: 5907574 (1999-05-01), Karni
patent: 5943351 (1999-08-01), Zhou et al.
patent: 6038241 (2000-03-01), Von Elm et al.
patent: 6130900 (2000-10-01), Black et al.
patent: 6193711 (2001-02-01), Connors et al.
patent: 6282223 (2001-08-01), Angeley
patent: 6370168 (2002-04-01), Spinelli
patent: 6395000 (2002-05-01), Mitchell et al.
patent: 6400495 (2002-06-01), Zayhowski
patent: 6563844 (2003-05-01), Young et al.
patent: 6788723 (2004-09-01), Langhans et al.
patent: 2002/0093997 (2002-07-01), Smart
patent: 2003/0086447 (2003-05-01), Young et al.
patent: 2004/0028090 (2004-02-01), Pask et al.
patent: 2004/0028108 (2004-02-01), Govorkov et al.
patent: 2005/0215078 (2005-09-01), Liu et al.
patent: 2005/0276300 (2005-12-01), Ishizu
patent: 2007/0153850 (2007-07-01), Scripsick et al.
patent: 2008/0065057 (2008-03-01), Andriasyan
patent: 1 037 338 (2003-08-01), None
patent: 60164386 (1985-08-01), None
patent: 200299520 (2000-10-01), None
patent: 3102886 (2004-10-01), None
patent: WO 99/54970 (1999-10-01), None
Koechner, W. “Acousto-optic Q-Switches”. Solid-State Laser Engineering, pp. 501-507, Fifth Edition Springer-Verlag, 1999.
Kogelnik, H. et al. “Laser Beams and Resonaters”. Applied Optics, pp. 1550-1567, vol. 5, No. 10, Oct. 1966.
Siegman, A. “Relay Imaging of Apertured Beams”. University Science Books, pp. 739-740, 1986.
Koechner, W. “Thermo-Optic Effects and Heat Removal”. Solid-State Laser Engineering, pp. 406-422, Chapter 7, Fifth Edition Springer-Verlag 1999.
Sam, R. C. et al.: “Design and performance of a 250 Hz Alexandrite laser”. IEEE J. of Quantum Electronics, vol. 24, No. 6, Jun. 1988.
Johnston, T.F. Jr.: “M2concept characterizes beam quality”. Laser Focus World, pp. 173-183, May 19990.
Comley Andrew
Cumberland Burly
Hay Nicolas
Kelly Matthew
Mason Michael
Harvey Minsun
Nguyen Phillip
Powerlase Ltd.
Reinhart Boerner Van Deuren s.c.
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