Measurement of far-field beam quality parameters of high power laser - 文章详情页

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摘要：

This　paper　proposes　an　infrared　diffusion　imaging　and　multi-point　calibration　method　to　measure　the　far-field　beam　quality　parameters　of　the　high-power　laser.　The　high-energy　pulse　laser　spot＇s　images　are　obtained　with　an　imaging　detector　by　laying　the　diffuse　reflection　target　in　far　field.　The　pulse-width　and　peak　power　of　the　laser　are　measured　using　an　energy　detector　which　is　put　behind　a　hole　at　the　center　of　the　target　plane.　According　to　the　energy　calibration　of　the　laser　spot＇s　images,　the　energy　and　power　distribution,　the　total　energy　and　the　corresponding　beam　quality　parameters　of　the　far　field　high-energy　pulse　laser　beam　are　attained.　This　method　has　been　applied　to　measuring　the　parameters　of　a　high-energy　TEA　CO2　laser.　The　measured　cross-section　radius　of　far-field　beam　was　80.2　mm　and　the　divergence　angle　was　1.55　mrad.

关键词：

Infrared lasers Pulsed lasers Diffusion Power quality High energy physics Lasers Calibration High power lasers

作者机构：

[ 1 ] [Ye, Zhengyu]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Ye, Zhengyu]North China Institute of Electronic Equipment, Beijing 100083, China
[ 3 ] [Song, Haiping]China North Vehicle Research Institute, Beijing 100072, China
[ 4 ] [Wang, Long]North China Institute of Electronic Equipment, Beijing 100083, China
[ 5 ] [Wang, Taotao]North China Institute of Electronic Equipment, Beijing 100083, China
[ 6 ] [Yu, Yanming]North China Institute of Electronic Equipment, Beijing 100083, China
[ 7 ] [Lü, Yueguang]North China Institute of Electronic Equipment, Beijing 100083, China
[ 8 ] [Wang, Zhiyong]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 9 ] [Jiang, Yijian]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China

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电子邮件地址：

zywang@bjut.edu.cn

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