激光技术, 2014, 38 (6): 794, 网络出版: 2014-12-26  

大口径高通量验证实验平台的三倍频能量测量

Measurement of the third harmonic energy of a large-aperture high power laser
作者单位
中国工程物理研究院 激光聚变研究中心, 绵阳 621900
摘要
为了完成大口径高通量验证实验平台建造初期的三倍频能量测量, 采用凹面镜缩束方式取样的方法, 利用新型玻璃吸收元件完成光束的滤波, 实验测试了新型玻璃吸收元件对测试结果的影响。结果表明, 采用新型玻璃吸收元件可以获得干净的三倍频光, 剩余基频、二倍频光的影响在0.4%左右, 整个三倍频能量测量的测量不确定度可以控制在5%以内, 保证了激光装置能量测量的可靠性。
Abstract
In order to measure energy of the third harmonic (TH) of a large aperture high power laser experiment platform, with a concave mirror sampling the beam, with a novel absorbing glass element filtering the beam, the influence of the absorbing glass element on the measurement result was experimentally tested. According to the data analysis, by using such a novel absorbing glass element, pure TH laser can be obtained and the influence of the residual fundamental and the second harmonic light is about 0.4%. The uncertainty of energy measurement of the entire TH laser energy can be controlled within 5%, which guarantees the reliability of energy measurement for the laser facility.

梁樾, 韩伟, 张崑, 李富全, 曹华保, 夏彦文, 孙志红, 郑奎兴. 大口径高通量验证实验平台的三倍频能量测量[J]. 激光技术, 2014, 38(6): 794. LIANG Yue, HAN Wei, ZHANG Kun, LI Fuquan, CAO Huabao, XIA Yanwen, SUN Zhihong, ZHENG Kuixin. Measurement of the third harmonic energy of a large-aperture high power laser[J]. Laser Technology, 2014, 38(6): 794.

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