连续激光二极管侧面抽运高重复频率大能量被动调Q激光器

郭家喜; 金光勇; 王超; 陈薪羽; 于永吉; 王奕博; 郝大伟

doi:doi:10.3788/cjl201037s1.0024

中国激光, 2010, 37 (S1): 24, 网络出版: 2010-10-29

连续激光二极管侧面抽运高重复频率大能量被动调Q激光器

High Repetition Rate and Large Energy Passively Q-Switched Laser Side-Pumped by Continous-Wave Laser Diode

论文大纲

郭家喜 ^*金光勇王超陈薪羽于永吉王奕博郝大伟

作者单位

长春理工大学理学院, 吉林长春 130022

激光器高重复频率大能量被动调Q 激光二极管侧面抽运 lasers high repetition rate and large energy passive Q-switch laser diode side-pumped

摘要

报道了高重复频率大能量连续激光二极管(LD)侧面抽运Cr4+YAG被动调Q Nd:YAG激光器。把工作物质等效为厚透镜, 根据ABCD定律计算了平平腔、平凹腔、平凸腔中激光束的模参数, 通过对比基模体积, 选择了平凸腔结构。实验中获得了高重复频率大能量被动调Q激光, 并实现了TEM00模运转。当抽运功率为136.20 W时, 被动调Q激光单脉冲能量达到2.46 mJ, 峰值功率24.36 kW, 脉冲重复频率4.22 kHz, 脉冲宽度101 ns, 脉冲幅度抖动约为5%, 频率抖动约为5%, 光束远场发散角小于1.5 mrad, 光束质量M2因子约为1.3。

Abstract

High repetition rate and large energy passively Q-switched Nd:YAG laser side-pumped by continous-wave (CW) laser diode is reported by using Cr4+YAG crystal as saturable absorbers. Regarding operation material as thermal thick lens, the laser beam parameters of plane-plane cavity, plano-concave cavity and plano-convex cavity are calculated according to the ABCD matrix theory of resonators. By comparing the fundamental mode volume, plano-convex cavity is selected. A high repetition rate and large energy passively Q-switched laser beam is obtained, and the TEM00 mode is achieved. A single pulse energy of 2.46 mJ, peak power of 24.36 kW, repetition rate of 4.22 kHz, pulse width of 101 ns are obtained at a pump power of 136.20 W, the amplitude fluctuation and frequency fluctuation are about 5%, the corresponding M2 factor is about 1.3, and the beam divergence angle of far-field is less than 1.5 mrad.

参考文献

[1] . Agnesi, S. Dell′acqua, G. C. Reali. High performance Cr4+YAG Q-switched CW diode pumped Nd:YAG laser[J]. Optical and Quantum Electronics, 1997, 29(3): 429-433.

[2] . Wang, L. Huang, M. Gong et al.. 4.5-ns pulse generation at a 500-kHz repetition rate from a short cavity acoustooptically Q-switched Nd:YVO4 laser[J]. Laser Physics, 2007, 17(10): 1199-1203.

[3] . . Efficient passively Q-switched operation of a diode-pumped NdGGG laser with a Cr4+YAG saturable absorber[J]. Optics & Laser Technology, 2009, 41: 17-20.

[4] 王加贤, 庄鑫巍. LD泵浦Cr4+YAG高重复频率被运调Q Nd:YVO4激光器[J]. 光子学报, 2006, 35(4): 494～498

Wang Jiaxian, Zhuang Xinwei. Cr4+YAG high repetition rate passively Q-switched Nd:YVO4 laser pumped by laser diode[J]. Acta Photonica Sinica, 2006, 35(4): 494～498

[5] . . LD side-pumped passively Q-switched YbYAG slab laser[J]. Optics and Lasers in Engineering, 2004, 42(4): 413-419.

[6] . Misra, K. Ranganathan, S. M. Oak. High efficiency TEM00 mode, diode-pumped, conduction-cooled, Nd:YAG zig-zag slab laser[J]. Opt. Commun., 2008, 281(4): 658-662.

[7] . High-power passively Q-switched ultra-thin slab lasers[J]. Chin. Opt. Lett., 2007, 5(1): 36-38.

[8] . . Edge-pumped passively Q-switched thin Nd:YAG slab lasers[J]. Chin. Opt. Lett., 2008, 6(5): 364-365.

[9] T. Omatsu, A. Minassian, M. J. Damzen. Passive Q-switching of a diode-side-pumped Nd-doped mixed gadolinium yttrium vanadate bounce laser[J]. Appl. Phys. B, 2008, 90(3-4): 445～449

[10] 唐昊, 朱小磊, 姜本学等. 侧面抽运国产Nd:YAG陶瓷棒的激光特性[J]. 中国激光, 2008, 35(12): 2001～2004

Tang Hao, Zhu Xiaolei, Jiang Benxue et al.. Laser-diode-array side pumped Nd:YAG ceramic laser[J]. Chinese J. Lasers, 2008, 35(12): 2001～2004

郭家喜, 金光勇, 王超, 陈薪羽, 于永吉, 王奕博, 郝大伟. 连续激光二极管侧面抽运高重复频率大能量被动调Q激光器[J]. 中国激光, 2010, 37(S1): 24. Guo Jiaxi, Jin Guangyong, Wang Chao, Chen Xinyu, Yu Yongji, Wang Yibo, Hao Dawei. High Repetition Rate and Large Energy Passively Q-Switched Laser Side-Pumped by Continous-Wave Laser Diode[J]. Chinese Journal of Lasers, 2010, 37(S1): 24.

连续激光二极管侧面抽运高重复频率大能量被动调Q激光器

关于本站 Cookie 的使用提示

全站搜索

连续激光二极管侧面抽运高重复频率大能量被动调Q激光器

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索