Diode Pumped CW and Passively Q-Switched Nd:LGGG Laser
at 1062 nm¹

H. Yang, Z. T. Jia, B. T. Zhang, J. L. He*, S. D. Liu, Y. Yang, and X. T. Tao

State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, China

*e-mail: jlhe@sdu.du.cn

Received October 31, 2011; in final form, December 7, 2011; published online April 3, 2012

Abstract—We report a Nd:LGGG laser at 1062 nm in the operations of the continuous-wave (CW) and pas-
sively Q-switching. The maximum CW output power of 5.62 W was obtained, corresponding to an optical-to-
optical conversion efficiency of 49.0% and slope efficiency of 55.9%. By using Cr⁴⁺:YAG with initial transmis-
sion of 94% as the saturable absorber, for the first time, we got the maximum passively Q-switched output
power of 1.21 W, accompanied with a highest pulse repetition rate of 27.1 kHz and a shortest pulse width of 9.1
ns.

DOI: 10.1134/S1054660X12050283

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