Coherent light generators – Particular beam control device – Nonlinear device
Patent
1997-10-09
2000-02-15
Davie, James W.
Coherent light generators
Particular beam control device
Nonlinear device
372 21, 372 75, 372 98, H01S 308
Patent
active
060261021
ABSTRACT:
A microchip laser is formed from at least one portion of laser material and at least one nonlinear crystal. The laser material and nonlinear crystal are in physical contact with each other and an angled surface of either the laser material or the nonlinear crystal forms an air-spaced etalon between the laser material and the nonlinear crystal. The axis of the microchip laser passes through the etalon formed between the laser material and the nonlinear crystal. The etalon in the laser cavity produces a single mode output. Additionally, the nonlinear crystal within the cavity may operate, in conjunction with a polarization dependent gain cross-section in the laser material, as a birefringent filter to reduce the bandwidth of laser emission from a broadband active laser material.
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