| 激光等离子体闪光高速摄影法实验研究 |
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| 引用本文： | 周军,冯伟利,刘勇,徐振华. 激光等离子体闪光高速摄影法实验研究[J]. 应用光学, 2011, 32(5): 1027-1031 |
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| 作者姓名： | 周军 冯伟利 刘勇 徐振华 |
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| 作者单位： | 1.北京航天计量测试技术研究所，北京 100076；2.南京理工大学 军工试验中心，江苏 南京 210094 |
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| 摘 要： | 通过对激光等离子体进行诊断，可以获取激光等离子体重要的参数和演变规律。使用高速CCD对激光等离子体闪光进行拍摄，研究了不同激光能量下激光诱导空气击穿产生的等离子体的形状、大小、颜色以及激光等离子的发展变化特性。实验表明：等离子体在空间上呈发光液滴状，且逆着激光束的方向膨胀。随着激光能量的增大，等离子体在水平方向和竖直方向的尺寸逐渐增大，增大趋势逐步变小。
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| 关 键 词： | 激光等离子闪光 光学诊断 空气击穿 高速摄影 |
Laser-induced plasma by high speed photography |
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| ZHOU Jun,FENG Wei-li,LIU Yong,XU Zhen-hua. Laser-induced plasma by high speed photography[J]. Journal of Applied Optics, 2011, 32(5): 1027-1031 |
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| Authors: | ZHOU Jun FENG Wei-li LIU Yong XU Zhen-hua |
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| Affiliation: | 1.Beijing Aerospace Institute for Metrology and Measurement Technology, Beijing 100076,China;
2. Ordnance Test, Nanjing University of Science and Technology, Nanjing 210094,China |
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| Abstract: | The important parameters and evolution rule of laser plasma can be obtained by diagnosing the laser plasma.Based on the photographs of plasma sparks shot by industrial high-speed CCD under different laser energy levels,the shape,size,color and variation characteristics of plasma were studied.The results showed that plasma plume looked like a liquid-droplet in space and expanded in the opposite direction of the laser beam.With the increase of laser energy,the size of plasma increased greatly in horizontal an... |
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| Keywords: | laser plasma spark optical diagnosis air breakdown high speed photography |
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