Actively Q-switched Laser Performance Comparison
between Nd:Lu_0.15Y_0.85VO₄ and Nd:Lu_0.33Y_0.37Gd_0.3VO₄
Mixed Crystals¹

L. L. Wu^a, S. Z. Zhao^a, *, G. Q. Li^a, D. C. Li^a, K. J. Yang^a, K. Cheng^a, and B. Zhao^b

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

^b College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China

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

Received October 10, 2011; in final form, October 15, 2011; published online February 6, 2012

Abstract—By using acousto-optic (AO) modulator as active Q-switch, the diode-pumped actively Qswitched
Nd:Lu_0.15Y_0.85VO₄ and Nd:Lu_0.33Y_0.37Gd_0.3VO₄ lasers are realized. The average output power and the pulse
width under different AO repetition rates are measured. The actively Q-switched laser performances for two
kind mixed crystals are compared for the first time. The experimental results show that the actively Q-switched
Nd:Lu_0.33Y_0.37Gd_0.3VO₄ laser can generate shorter pulse width with higher peak power in comparison with the
actively Q-switched Nd:Lu_0.15Y_0.85VO₄ laser. Due to broader fluorescence line-width, the triple-mixed crystal
Nd:Lu_0.33Y_0.37Gd_0.3VO₄ is a promising laser medium for shorter Q-switched pulse with higher peak power.

DOI: 10.1134/S1054660X12030231

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