Improvement of Laser Characteristics for Diode-Pumped
Passively Q-Switched and Mode-Locked Nd:Lu_0.15Y_0.85VO₄ Laser
by AO Modulator¹

X. Li^a, G. Q. Li^a, *, S. Z. Zhao^a, B. Zhao^b, Y. F. Li^a, L. Yin^a, and X. M. Wang^a

^a School of Information Science and Engineering and Shandong Provincial Key Laboratory
of Laser Technology and Application, Shandong University, Jinan 250100, China

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

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

Received June 8, 2012; in final form, July 13, 2012

Abstract—The hybrid Q-switched and mode-locked (QML) operation of Nd:Lu_0.15Y_0.85VO₄ crystal at
1.34m with V:YAG saturable absorber and acousto-optic (AO) modulator has been realized. The laser char-
acteristics are distinctly improved by the hybrid QML if compared to those with the single V:YAG QML. At the
pump power of 5.04 W, the Q-switched pulse energy is enlarged to 5.6 times and the Q-switched pulse width
is shortened to 40% by the AO modulator in contrast to those of the single passively QML.

DOI: 10.1134/S1054660X12120171

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