激光技术, 2015, 39 (3): 377, 网络出版: 2015-04-28
热透镜效应补偿的高功率Nd:YAG激光器的优化设计
Optimal design of high power Nd∶YAG laser based on compensation of thermal lens effect
摘要
为了获得高功率、高光束质量的1064nm激光,采用凹透镜作为补偿透镜来补偿激光棒的热透镜效应.对补偿透镜的选取进行理论分析,并使用所设计的包含补偿透镜的平平谐振腔Nd∶YAG激光器进行了实验验证.在实验中,使用焦距为250mm的凹透镜、透过率为30%的输出耦合镜,获得了55W的高功率、高光束质量的1064nm激光输出.结果表明,此项研究对高功率、高光束质量激光器谐振腔的设计是有帮助的.
Abstract
In order to obtain 1064nm laser with high power and high beam quality,a laser resonator was designed to solve thermal lens effect with a concave lens as compensation lens.The selection of the compensation lens was analyzed.A Nd∶YAG laser with a compensation lens and a plano-plano cavity was verified in the experiment.High beam quality 55W 1064nm laser was obtained when the focal length of the concave lens was 250mm and the transmittance of the output mirror was 30%.This research is helpful to the design of laser resonators with high power and beam quality.
吴羽, 龙晓莉, 焦中兴, 何广源, 张倩. 热透镜效应补偿的高功率Nd:YAG激光器的优化设计[J]. 激光技术, 2015, 39(3): 377. WU Yu, LONG Xiaoli, JIAO Zhongxing, HE Guangyuan, ZHANG Qian. Optimal design of high power Nd∶YAG laser based on compensation of thermal lens effect[J]. Laser Technology, 2015, 39(3): 377.
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