Absorbing filter in pump cavity for control of beam quality

Details Absorbing filter in pump cavity for control of beam quality Absorbing filter in pump cavity for control of beam quality

1988-11-18

1990-01-16

Gonzalez, Frank

Coherent light generators

Particular pumping means

Pumping with optical or radiant energy

372 35, 372 40, 372 41, H01S 393

Patent

active

048948373

ABSTRACT:
In a laser apparatus which includes a laser medium exhibiting thermally induced optical distortions, and flash lamp mounted near the laser medium to provide laser pumping radiation, an absorbing filter is mounted between the flash lamp and the laser medium for absorbing radiation in the output spectrum of the lamp which exhibits a low fluorescence efficiency in the laser medium. By absorbing radiation with the low fluorescence efficiency in the laser medium, heat which develops in the laser medium can be limited to control the thermally induced optical distortions.

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Czarniewski; "Spectral Filter for a Nd: Yaig Pumping Cavity", Applied Optics; vol. 10, No. 6; 06/1971; pp. 1460-1461.
CVI Laser Corporation, "Laser Products Catalogue" [p. 10].
Schott Glass Technologies, Inc., "Optical Glass Filters" Catalogue [p. 7].
Koechner, Solid State Laser Engineering (1976), p. 254.
Schnell et al., "2.92-.mu.m Erbium Laser Operated at 125 Hz", Amosa Conference, 31 Oct. 1988.

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