10.2-W Q-switched intracavity frequencydoubled2007国内调Q.pdfVIP

10.2-W Q-switched intracavity frequency- doubled Nd:YVO4/LBO red laser double-end- pumped by laser-diode-arrays Wan Qin a,b , Chenlin Du a and Shuangchen Ruan a a School of Engineering and Technology, Shenzhen University, Shenzhen 518060, China; tylgqinwan@163.com, scruan@ Yuncai Wang b b Department of Physics, Taiyuan University of Technology, Taiyuan 030024, China Abstract: We report a high-power diode-double-end-pumped Q-switched Nd:YVO4 red laser through intracavity frequency-doubling with a type-I critical phase-matched LBO crystal. At a repetition frequency of 21.72 kHz, a maximum average output power of 10.2 W at 671 nm was measured to while the incident pump power was 78.4 W, the corresponding optical conversion efficiency was 13.0%, with a pulse width of about 94 ns and a pulse energy of 469.6 μJ, the peak power was 5.0 kW. At an average output power around 9.6 W a power stability better than 2.3% was maintained for half an hour. ?2007 Optical Society of America OCIS codes: (140.3480) Lasers, diode-pumped; (140.3530) Lasers, neodymium; (140.3540) Lasers, Q-switched; (140.3580) Lasers, solid-state; (140.7300) Visible lasers; (140.6810) Thermal effect; (190.2620) Frequency conversion. References and links 1. C. L. Du, S. C. Ruan, Y. Q. Yu, and F. Zeng, “6-W diode-end-pumped Nd:GdVO4/LBO quasi-continuous- wave red laser at 671 nm,” Opt. Express 13, 2013-2018 (2005). 2. H. J. Zhang, C. L. Du, J. Y. Wang, X. B. Hu, X. G. Xu, C. M. Dong, J. H. Liu, H, K, Kong, H. D. Jiang, R. J. Han, Z. S. Shao, and M. H. Jiang, “Laser performance of Nd:GdVO4 crystal at 1.34 μm and intracavity double red laser,” J. Cryst. Growth 249, 492-496 (2003). 3. Y. Inoue, S. Konno, T. Kojima, and S. Fujikawa, “High-power red beam generation by frequency doubling of a Nd:YAG laser,” IEEE J. Quantum Electron. 35, 1737–1740 (1999). 4. J. L. He, G. Z. Luo, H. T. Wang, S. N. Zhu, Y. Y. Zhu, Y. B. Chen, and N. B. Ming, “Generation of 840 mW of red light by freq