Confocal diode pumped laser

Details Confocal diode pumped laser Confocal diode pumped laser

1994-02-04

1995-05-02

Bovernick, Rodney B.

Coherent light generators

Particular pumping means

Pumping with optical or radiant energy

372 92, 372101, 372 93, H01S 308, H01S 30933, H01S 3105

Patent

active

054126835

ABSTRACT:
A high efficiency, diode pumped laser includes a resonator mirror and an output coupler which define a nearly confocal resonator. Positioned in the resonator is a laser crystal. A diode pump source supplies a pump beam to the laser crystal and produces an output beam. A strong thermal lens transforms a non-confocal resonator to a nearly confocal resonator. The TEMOO mode diameter in the laser crystal may be smaller than the pump beam diameter that is incident on the laser crystal. Output powers greater than about 4 W are achieved, the overall optical efficiency is greater than about 25%, and an optical slope efficiency in a TEMOO mode of greater than 40% is possible.

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