Laser generator and method of controlling the same

Details Laser generator and method of controlling the same Laser generator and method of controlling the same

2006-02-02

2010-10-19

Van Roy, Tod T (Department: 2828)

Coherent light generators

Particular component circuitry

Having fault protection circuitry

C372S021000, C372S022000, C372S029015, C372S038010

Reexamination Certificate

active

07817690

ABSTRACT:
A laser generator includes a generation means for pumping by a pumping light source (7) a pumping medium (3) to generate a fundamental-wave laser beam, an output sensor (6) for measuring average output power or pulse energy of the fundamental-wave laser beam, a wavelength-conversion element (5), arranged on an optical path for the fundamental-wave laser beam, for converting the fundamental-wave laser beam into its higher-harmonic-wave laser beam, and a controller (9) for memorizing a determination value set to a value lower than a breakage threshold for average output power or pulse energy of the laser beam converted by the wavelength-conversion element (5), and for, when the measurement value becomes not lower than the determination value, controlling the output power of the fundamental-wave laser beam to be a value lower than the breakage threshold; thereby, the beam intensity through the wavelength-conversion element (5) never exceeds the breakage threshold, and thus breakage of the wavelength-conversion element (5) can be prevented.

REFERENCES:
patent: 7242700 (2007-07-01), Wang
patent: 2005/0163174 (2005-07-01), Nakayama et al.
patent: 63-133686 (1988-06-01), None
patent: 4-249386 (1992-09-01), None
patent: 8-8480 (1996-01-01), None
patent: 10-70333 (1998-03-01), None
patent: 2005-209965 (2005-08-01), None

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