Abstract
Abstract A compact passively Q -switched diode-pumped Tm:YLF laser with polycrystalline Cr:ZnS as the saturable absorber is demonstrated. In the Q -switching regime, the maximum average output power reached 478 mW with the incident pump power of 16 W, which is the highest average output power for PQS Tm:YLF laser up to now. The maximum pulse energy of 529 μJ was obtained with 8.96 kW peak power and 59 ns pulse duration near 1.9 μm, respectively.
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