Near resonant Nd.sup.3+, solid state laser system

Details Near resonant Nd.sup.3+, solid state laser system Near resonant Nd.sup.3+, solid state laser system

1989-10-06

1991-06-04

Gonzalez, Frank

Coherent light generators

Particular pumping means

Pumping with optical or radiant energy

372 75, 372 95, 372 41, 372 99, H01S 3091

Patent

active

050220411

ABSTRACT:
A commercial near resonant laser system with a trivalent rate earth ion doped solid state host, such as Nd:YAG, is pumped at an energy sufficient to excite the electrons from the ground level directly to the upper laser level. The laser system is then tuned to a transition from the upper laser level back to the ground level to produce high power output beams. Because the ground level will include a plurality of "Stark split levels", the necessary population inversions can be maintained and laser energy generated. However, the difference between the Stark split level from which the electrons are excited to the upper laser level, and the Stark split level to which the electrons decay in the light producing transition from the upper laser level, is slight. Thus, energy dissipated in heat as electrons decay in non-lasing transitions is minimized.

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