| 光学成像法和穿孔法测量飞秒激光焦斑特征 |
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| 引用本文： | 吴玉迟,何颖玲,朱斌,温天舒,董克攻,郭仪,孙立,李庆,王晓东,谷渝秋.光学成像法和穿孔法测量飞秒激光焦斑特征[J].强激光与粒子束,2010,22(12). |
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| 作者姓名： | 吴玉迟 何颖玲 朱斌 温天舒 董克攻 郭仪 孙立 李庆 王晓东 谷渝秋 |
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| 作者单位： | 1. 中国工程物理研究院 激光聚变研究中心， 高温高密度等离子体物理国防科技重点实验室， 四川 绵阳 621900; 2. 中国科学技术大学 近代物理系， 中国科学院 基础等离子体物理重点实验室， 合肥 230026 |
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| 基金项目： | 高温高密度等离子体国防科技重点实验室基金项目，中国工程物理研究院科学技术重大基金项目，国家自然科学基金项目 |
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| 摘 要： | 超短超强激光焦斑参数的精确测量是深入开展精密物理实验的前提。在SILEX-Ⅰ激光装置上，采用光学成像法和穿孔法测量了μJ级能量下的激光焦斑特性，采用光学成像方法得到了激光主瓣大小及能量集中度信息，通过穿孔法得到了激光能量透过率与不同大小孔径的关系曲线，并对两种方法得到的测量结果进行了比对研究。研究结果表明，光学焦斑测量法和穿孔法都可以比较准确地反映激光焦斑的能量分布情况，得到的能量分布偏差小于10%。
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| 关 键 词： | 焦斑 飞秒激光 功率密度 光学成像 穿孔法 |
| 收稿时间： | 1900-01-01; |
Measurement of femtosecond laser focusing spot by optical imaging and pinhole method |
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| Wu Yuchi,He Yingling,Zhu Bin,Wen Tianshu,Dong Kegong,Guo Yi,Sun Li,Li Qing,Wang Xiaodong,Gu Yuqiu.Measurement of femtosecond laser focusing spot by optical imaging and pinhole method[J].High Power Laser and Particle Beams,2010,22(12). |
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| Authors: | Wu Yuchi He Yingling Zhu Bin Wen Tianshu Dong Kegong Guo Yi Sun Li Li Qing Wang Xiaodong Gu Yuqiu |
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| Institution: | 1. National Key Laboratory of Laser Fusion, Research Center of Laser Fusion CAEP, P.O.Box 919-986, Mianyang 621900, China; 2. Key Laboratory of Basic Plasma Physics, Chinese Academy of Sciences, Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | For the interaction experiments between ultra-intense laser and targets, characterizing the laser focusing spot is very important. Two different methods were adopted on SILEX-Ⅰ Ti:sappire femtosecond laser system. One is directly imaging the laser spot on 16bit CCD, another is measuring the transmitting energy behind a pinhole which was exactly positioned on the laser focusing spot. Both methods can give the correct distribution of the focal spot with less than error 10%. |
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| Keywords: | femtosecond laser laser intensity optical imaging pinhole method |
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