F. Chena, b, *, X. Yub, J. Guoa, L. H. Guoa, G. L. Yanga, J. J. Xiea, L. M. Zhanga, Y. M. Genga,
S. M. Lia, D. J. Lia, C. L. Shaoa, F. J. Menga, C. S. Zhanga, and R. P. Yanb
a State Key Laboratory of Laser Interaction with Matter, Changchun Institute of Optics, Fine Mechanics and Physics,
Chinese Academy of Sciences, Changchun, 130033 China
b National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology,
Harbin 150080 China
*e-mail: feichen@yahoo.cn
Received July 16, 2011; in final form, July 20, 2011; published online October 24, 2011
Abstract—A diode-pumped acousto-optically (AO) Q-switched high-repetition-rate Nd:YAG lasers at 946 and
473 nm by intracavity frequency-doubling were reported in this paper. Using a compact V-type laser cavity, a
maximum average output power of 4.5 W 946 nm laser was obtained at an operating repetition rate of 10 kHz,
corresponding to an optical conversion efficiency of 10.5% and a slope efficiency of 15.6%. With a BiBO crys-
tal as the intracavity frequency-doubler, 1.35 W 473 nm pulsed laser was achieved at 10 kHz. The peak power
of the Q-switched blue pulse was up to 4.1 kW, with a pulse width of 33.1 ns. Then, the long-term power insta-
bility was less than 1%. Moreover, stable pulsed operation of 946 nm and 473 nm lasers can even reach 50 kHz.
10.1134/S1054660X11230034
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