1645 nm Q-Switched Resonantly Pumped Er:YAG Laser¹

B. Q. Yao, X. L. Liu*, B. S. Chen, L. X. Yu, X. H. Sun, Z. Y. Chen, Y. L. Ju, and Y. Z. Wang

National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, 150001 China

*e-mail: xlliuhit@163.com

Received October 19, 2011; in final form, October 21, 2011; published online February 6, 2012

Abstract—A resonantly pumped Q-switched Er:YAG laser at 1645 nm was reported. 1 mJ of output pulse
energy was achieved for Q-switched operation at 100 Hz repetition rate under total incident pump power of 4
W. An output peak power of 14 kW and pulse width of 60.6 ns were obtained.

DOI: 10.1134/S1054660X12030255

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