[OPTICAL REVIEW Vol. 21, No. 6 (2014) 775-777]
© 2014 The Japan Society of Applied Physics

High Power Narrow-Linewidth Tm:YLF Slab Laser with Volume Bragg Grating and Fabry–Perot Etalon

Xiaoming DUAN1*, Yuanxue CAI2†, Yu DING1, Tongyu DAI1, and Kai ZHAO1

1National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China
2Department of Physics, Tianjin University of Science and Technology, Tianjin 300457, China

(Received May 6, 2014; Accepted September 13, 2014)

The laser performance of a dual-end pumped Tm:YLF laser is investigated and optimized. With a volume Bragg grating and a Fabry–Perot etalon, at maximum output level, the wavelength peak is 1908.0 nm and the narrow linewidth of 0.1 nm is obtained. For an optimized output coupler with a transmission of 30% and a curve radius of 600 mm, the output power exceeded 115.0 W, obtaining a slope efficiency of 38.4% with respect to the absorbed pump power.

Key words: solid-state laser, Tm:YLF, slab, narrow linewidth

*E-mail address: xmduan@hit.edu.cn
E-mail address: yuanxue{_}cai@tust.edu.cn