Laser apparatus

Details Laser apparatus Laser apparatus

1989-11-08

1991-10-15

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Specified cavity component

372 95, 372103, 372108, 372 9, H01S 308

Patent

active

050581236

ABSTRACT:
An output laser beam of an unstable laser resonator has a circular cross sectional pattern, so that a condensation thereof becomes easy, resulting in a high power beam. The circular pattern is obtained by making an expanding mirror of the resonator partially transmissible and compensating for a phase difference between laser beam portions passing through the expanding mirror and other portion of a window mirror.

REFERENCES:
patent: 3919664 (1975-11-01), McAllister
patent: 4327129 (1988-04-01), Sepp
patent: 4553244 (1985-11-01), Benedict et al.
patent: 4903271 (1990-02-01), Yasui et al.
Gobbi et al.; "Novel Unstable Resonator Configuration with a Self-Filtering Aperature: Exper. Character. of Nd:YAG Loaded Cavity "; Appl. Optics, vol. 24, No. 1, Jan. 1, '85.

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