Microchip laser

Details Microchip laser Microchip laser

1993-10-22

1994-11-15

Epps, Georgia Y.

Coherent light generators

Particular pumping means

Pumping with optical or radiant energy

372 70, 372 71, 372 92, 372 21, 372 32, 437129, H01S 3091

Patent

active

053655397

ABSTRACT:
A gain medium is disposed between two mirrors to form a resonant cavity. The cavity length is selected so that the gain bandwidth of the gain medium is less than or substantially equal to the frequency separation of the cavity modes and such that a cavity mode frequency falls within the gain bandwidth. A nonlinear optical material is disposed either inside or outside the cavity to generate new laser wavelengths. The nonlinear optical material may be contained in a cavity which is resonant at the microchip laser frequency. Alternatively, the microchip laser may be tuned, for example thermally or by the application of a longitudinal or transverse stress, to the frequency of the resonant cavity. The laser is optically pumped by any appropriate source such as a semiconductor injection laser or laser array. Suitable gain media include Nd:YAG, Nd:GSGG and Nd pentaphosphate, and suitable non-linear optical material include MgO:LiNbO.sub.3 and KTP.

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