强激光与粒子束, 2012, 24 (7): 1651, 网络出版: 2012-07-17   

板条增益介质波前畸变诊断方法

Diagnostic method of wavefront aberration for gain mediums in slab lasers
雷翔 1,2,3,*董理治 1,2杨平 1,2晏虎 1,2,3刘文劲 1,2,3王帅 1,2,3许冰 1,2
作者单位
1 中国科学院 光电技术研究所 自适应光学研究室, 成都 610209
2 中国科学院 自适应光学重点实验室,成都 610209
3 中国科学院 研究生院, 北京 100039
摘要
对波前重构算法中的区域法进行了改进,使其能够应用于板条增益介质的波前畸变诊断。利用该方法对47块Nd: YAG板条增益介质沿厚度方向波前畸变进行测量,指出镀膜和加工等环节对增益介质的波前畸变可能造成的影响。按照波前畸变峰谷(PV)值对测量结果进行了统计,结果表明:增益介质造成的静态波前畸变参差不齐,测量样本中静态畸变PV值最多可达5 μm以上,且仅有4.1%的增益介质静态畸变PV值小于1 μm。通过选取某些增益介质使之级联,测量其组合波前畸变,发现在系统中使用两块波面互补的增益介质有助于减小系统的静态波前畸变。
Abstract
Forty-seven pieces of slab gain mediums were measured using this diagnostic method and the results show that the wavefront aberrations of slab gain mediums are affected by the processes like coating. The measurement results were classified by PV (peak to valley) values of static wavefront aberrations. The maximum PV value is more than 5 μm for the measured samples and only 4.1% of the samples have PV values less than 1 μm. Some slab gain mediums were selected and connected in series like in a slab laser system. The measurement results reveal that if the wavefront aberrations of the two gain mediums in series can complement each other, the static aberrations of the laser system can be reduced.
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雷翔, 董理治, 杨平, 晏虎, 刘文劲, 王帅, 许冰. 板条增益介质波前畸变诊断方法[J]. 强激光与粒子束, 2012, 24(7): 1651. Lei Xiang, Dong Lizhi, Yang Ping, Yan Hu, Liu Wenjin, Wang Shuai, Xu Bing. Diagnostic method of wavefront aberration for gain mediums in slab lasers[J]. High Power Laser and Particle Beams, 2012, 24(7): 1651.

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