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Midinfrared laser source with high power and beam quality

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Abstract

A simple scheme for generation of high power in the midinfrared is demonstrated. By using a 15  W thulium-doped fiber laser emitting at 1907  nm to pump a Q-switched Ho:YAG laser, we obtained 9.8  W at 2096 nm at a 20  kHz pulse repetition rate with excellent beam quality. The output of this laser was used to pump a doubly resonant zinc germanium phosphide based optical parametric oscillator, and we obtained 5.1  W average power in the 35  μm range with M21.8.

© 2006 Optical Society of America

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