X. M. Duan, Y. J. Shen, B. Q. Yao, Yu. Z. Wang, “146.4 W end-pumped Ho : YAG slab laser with two crystals”, Kvantovaya Elektronika, 2018, Volume 48, Number 8,Pages <nobr>691

This article is cited in 6 papers

Lasers

146.4 W end-pumped Ho : YAG slab laser with two crystals

X. M. Duan^a, Y. J. Shen^b, B. Q. Yao^a, Yu. Z. Wang^a

^a National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, China
^b School of Opto-electronic Information Science and Technology, Yantai University, China

Abstract: We report a high-power two-crystal Ho:YAG slab laser. A maximum cw output power of 146.4 W at a wavelength of 2090.7 nm is achieved, corresponding to a slope efficiency of 66.0% and an optical efficiency of 61.2%. The beam quality factor is measured to be M² < 2.2 at different output power levels. With an acousto-optic Q-switch, a maximum average output power of 141.3, 137.7 and 134.5 W are obtained at pulse repetition rates of 20, 30 and 50 kHz, respectively. Minimum pulse widths of 39 ns, 44 ns and 74 ns are achieved for the above pulse repetition rates.

Keywords: solid-state laser, Ho:YAG laser, high power.

Received: 24.04.2018
Revised: 13.06.2018

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