Optical elements for guiding laser light and laser systems compr

Details Optical elements for guiding laser light and laser systems compr Optical elements for guiding laser light and laser systems compr

1998-02-26

2000-04-11

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Mirror support or alignment structure

372 9, 372 26, 372 34, 372 69, 372103, 372108, 372 98, 372 99, H01S 308

Patent

active

060495588

ABSTRACT:
Laser systems, and optical elements for laser systems, are disclosed for providing a pumped laser light with improved output efficiency while having simple construction and simple alignment adjustment. A pump light flux from a diode pumping laser irradiates and thus pumps a solid-state laser crystal. The irradiation by the pump light flux is coaxial with an output laser beam produced by the laser crystal. The pump light flux is conducted by an optical element, preferably frustoconical in shape with an entrance face larger than an exit face, that functions as a light funnel. The entrance face is disposed proximal to the pumping laser 11, and the exit face is disposed proximally to the laser crystal 14. A portion of the pump light flux entering the entrance face passes through the optical element without being reflected by a side surface of the optical element. The remaining pump light flux reflects at least once by the side surface during passage through the optical element. The exit face has a shape corresponding to the desired laser mode shape of the output laser beam.

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