In this report we discuss the design, simulation, construction, and characterization of an actively Q-switched, diodepumped solid state laser operating at 2 micrometer. The laser cavity has a microchip configuration and uses a 6% thuliumdoped YAG crystal as the lasing medium. In continuous wave mode, we achieve output powers of up to 450 mW with a slope efficiency of 9.5%. Using an acousto-optic Q-switch, the laser was run in pulsed ...
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