Abstract
We reached an optical output power up to 38 W (M2 < 2) in 3 − 5 µm range from a ZGP OPO pumped by a 68 W 10 kHz Ho:LLF MOPA system. We report methods for improvement of beam quality at such power levels and present time-resolved studies of thermal lens.
© 2020 The Author(s)
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