Parasitic oscillation suppression in solid state lasers using ab

Details Parasitic oscillation suppression in solid state lasers using ab Parasitic oscillation suppression in solid state lasers using ab

1992-10-29

1994-08-02

Bovernick, Rodney B.

Coherent light generators

Particular operating compensation means

372 39, H01S 300

Patent

active

053352378

ABSTRACT:
A thin absorbing film is bonded onto at least certain surfaces of a solid state laser gain medium. An absorbing metal-dielectric multilayer film is optimized for a broad range of incidence angles, and is resistant to the corrosive/erosive effects of a coolant such as water, used in the forced convection cooling of the film. Parasitic oscillations hamper the operation of solid state lasers by causing the decay of stored energy to amplified rays trapped within the gain medium by total and partial internal reflections off the gain medium facets. Zigzag lasers intended for high average power operation require the ASE absorber.

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