A solid state ultraviolet lasers based on cerium-doped LiCaAlF6 crystal resonator

Nan Yu; Thanh Le; Steven J. Schowalter; Wade Rellergert; Justin Jeet; Guoping Lin; Eric Hudson

doi:10.1117/12.2002657

22 February 2013 A solid state ultraviolet lasers based on cerium-doped LiCaAlF₆ crystal resonator

Nan Yu, Thanh Le, Steven J. Schowalter, Wade Rellergert, Justin Jeet, Guoping Lin, Eric Hudson

Proceedings Volume 8600, Laser Resonators, Microresonators, and Beam Control XV; 86000E (2013) https://doi.org/10.1117/12.2002657
Event: SPIE LASE, 2013, San Francisco, California, United States

Abstract

We report the first demonstration of a UV laser using a high-Q whispering gallery mode (WGM) resonator of Ce³⁺: LiCaAlF₆. We show that WGM resonators from LiCaAlF₆ can achieve a Q of 2.6 x 10⁷ at UV. We demonstrated a UV laser at 290 nm with a pulsed pump laser at 266 nm. The experiments showed the low pump threshold intensity of 7.5 x 10⁹ W/m² and slope efficiency of 25%. We have also observed lasing delay dynamics. These results are consistent with our modeling and theoretical estimates, and pave the way for a low threshold cw UV laser using WGM resonator cavity.

Citation Download Citation

Nan Yu, Thanh Le, Steven J. Schowalter, Wade Rellergert, Justin Jeet, Guoping Lin, and Eric Hudson "A solid state ultraviolet lasers based on cerium-doped LiCaAlF₆ crystal resonator", Proc. SPIE 8600, Laser Resonators, Microresonators, and Beam Control XV, 86000E (22 February 2013); https://doi.org/10.1117/12.2002657

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