A Compact and High Efficiency Diode Pumped Green Laser
Based on MgO Doped PPLN¹

X. S. Zheng^a, B. Ji^a, F. Q. Jia^a, Z. P. Cai^a, H. Y. Xu^a, and C. Q. Xu^b

^a Department of Electronic Engineering, School of Information Science and Technology, Xiamen University,
Xiamen, 361005 China

^b Department of Engineering Physics, McMaster University, Hamilton, Ontario L8S4L7, Canada

e-mail: jiafq@xmu.edu.cn

Received July 12, 2011; in final form, July 31, 2011; published online November 28, 2011

Abstract—In this work, an efficient intra-cavity second harmonic generation of green laser in a periodically
poled MgO doped LiNbO₃ (MgO:PPLN) bulk crystal using a compact Nd:YVO₄ laser as a fundamental laser
source is reported. Different length, different working temperature MgO:PPLN crystals are tested and investi-
gated in the SHG experiments. The maximum output power at 532 nm is 6.2 W at the absorbed pump power at
808 nm of 14 W, the optical to optical conversion efficiencies from 808 to 532 nm and 1064 to 532nm are 43
and 77%, respectively, the instability in 2 hours is less than 5%.

DOI: 10.1134/S1054660X12010318

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