Eye-Safe Raman Laser at 1532 nm with BaWO₄ Crystal
under Direct 880 nm Pumping¹

X. H. Chen^{a, b}, P. Li^{a, b,} *, X. Y. Zhang^{a, b}, Q. P. Wang^{a, b}, Z. J. Liu^{a, b},
Z. H. Cong^{a, b}, L. Li^{a, b}, and H. J. Zhang^c

^a School of Information Science and Engineering, Shandong University, Jinan, 250100 China

^b Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University,
Jinan, Shandong, 250100 China

^c State Key Laboratory of Crystal Materials, Shandong University, 250100 China

*e-mail: pingli@sdu.edu.cn

Received June 18, 2011; in final form, June 21, 2011; published online October 24, 2011

Abstract—A highly efficient 880 nm laser diode pumped actively Q-switched Nd:YVO₄/BaWO₄ eye-safe Raman
laser is demonstrated. With an absorbed pump power of 10.9 W, 1.7 W of average output power at the Stokes wave-
length is generated at a PRF of 40 kHz, corresponding to a diode-to-Stokes conversion efficiency of 15.6%.

10.1134/S1054660X11230022

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