Diode-Pumped High-Repetition-Rate AcoustoOptically
Q-switched Nd:YVO₄ Laser Operating at 914 nm¹

F. Chen^{a, b,} *, X. Yu^b, R. P. Yan^b, X. D. Li^b, G. L. Yang^a, D. J. Li^a,
J. J. Xie^a, L. M. Zhang^a, J. Guo^a, and L. H. Guo^a

^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 August 27, 2011; in final form, August 29, 2011; published online December 28, 2011

Abstract—A diode-pumped high-repetition-rate acousto–optically (A–O) Q-switched Nd:YVO₄ laser operat-
ing at 914 nm was reported in this paper. Employing a compact linear laser cavity, at an operating repetition
rate of 10 kHz, a maximum average output power of 2.2 W 914 nm laser was obtained at an incident pump
power of 45.3 W, corresponding to an optical conversion efficiency of 4.9% and a slope efficiency of 8.8%. Min-
imum pulse width of 24 ns and maximum peak power of 8.0 kW of 914 nm laser was also achieved at an inci-
dent pump power of 40.8 W. To the best of our knowledge, this is the highest peak power of 914 nm laser at 10
kHz by far. Moreover, the highest operating repetition rate of pulsed 914 nm can even reach 100kHz.

10.1134/S1054660X12020065

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