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High energy (0.8 J) mechanically Q-switched 2.94 μm Er:YAG laser

Authors :
Sergey B. Mirov
Dmitry Martyshkin
Krishna Karki
Vladimir V. Fedorov
Source :
Opt Express
Publication Year :
2021
Publisher :
Optical Society of America, 2021.

Abstract

We report a flashlamp pumped mechanically Q-switched (MQS) 2.94 μm Er:YAG laser based on a spinning mirror with a highest output energy of 805 mJ at a pulse duration of 61 ns and 13 MW of peak power at 1 Hz repetition rate. This record output energy was achieved with the use of 300 mm long MQS Er:YAG laser cavity consisting of a 70% output coupler, 7 × 120 mm AR coated Er(50%):YAG crystal, and 4200 rad/s angular speed of the spinning mirror. The pulse jitter was also measured by using optical triggering and was smaller than 10 ns for 150 ns Q-switched pulses, which could be applicable to many laser applications where precise synchronization of pulses is required.

Details

Language :
English
Database :
OpenAIRE
Journal :
Opt Express
Accession number :
edsair.doi.dedup.....746fde23cc03a80b3ba521035cdbb20b