Abstract

This paper presents a compact diode-pumped continuous-wave Er:YLF laser emitting radiation at 2.8 µm with output power 2.9 W and slope efficiency 26.2%. Moreover, the $Q$-switching regime was successfully tested with a Fe:ZnSe polycrystal used as a modulator. Passive $Q$-switching results in the shortest pulse duration of 21 ns with repetition rate 50 kHz and peak power 252 W.

© 2021 Optical Society of America

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