Compact diode-pumped CW and Q-switched 2.8 μm Er:YLF laser

This paper presents a compact diode-pumped continuous-wave Er:YLF laser emitting radiation at 2.8 mu M 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. (C) 2021 Optical Society of America

Automated summary

This paper presents a compact diode-pumped continuous-wave Er:YLF laser emitting radiation at 2.8 mu M with output power 2.9 W and slope efficiency 26.2%. Additionally, passive Q-switching was successfully demonstrated with Fe:ZnSe polycrystal as a modulator, resulting in a pulse duration of 21 ns with peak power 252 W.