High energy mechanically Q-switched Er:YAG laser operating at 2940 nm

Krishna Karki; Vladimir Fedorov; Dmitry Martyshkin; Sergey Mirov

doi:10.1117/12.2623365

30 May 2022 High energy mechanically Q-switched Er:YAG laser operating at 2940 nm

Krishna Karki, Vladimir Fedorov, Dmitry Martyshkin, Sergey Mirov

Proceedings Volume PC12092, Laser Technology for Defense and Security XVII; PC120920G (2022) https://doi.org/10.1117/12.2623365
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

We report the laser operation of spinning mirror-based mechanically Q-switched (MQS) 2940 nm Er:YAG with record 805 mJ output energy in a single 61 ns pulse and ~10 ns pulse jitter. The laser was operated at 1Hz repetition rate and 670 Hz rotational rate of the spinning mirror. The highest output energy was achieved with the use of a 300 mm long MQS Er:YAG laser cavity consisting of 70% output coupler, 7x120 mm AR coated Er(50%):YAG crystal, and spinning HR mirror. The maximum output energy was limited by the optical damage of the Er:YAG AR coatings.

Conference Presentation

Citation Download Citation

Krishna Karki, Vladimir Fedorov, Dmitry Martyshkin, and Sergey Mirov "High energy mechanically Q-switched Er:YAG laser operating at 2940 nm", Proc. SPIE PC12092, Laser Technology for Defense and Security XVII, PC120920G (30 May 2022); https://doi.org/10.1117/12.2623365

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