| 高功率激光等离子体冲击波探测中衍射效应的消除 |
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| 引用本文： | 李明,刘骏,沈中华,陆建,倪晓武. 高功率激光等离子体冲击波探测中衍射效应的消除[J]. 南京理工大学学报(自然科学版), 2005, 29(6): 684-686,719 |
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| 作者姓名： | 李明 刘骏 沈中华 陆建 倪晓武 |
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| 作者单位： | 南京理工大学,理学院,江苏,南京,210094;淮海工学院,教务处,江苏,连云港,222005;南京理工大学,理学院,江苏,南京,210094 |
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| 基金项目： | 国家自然科学基金（60208004）,教育部青年教师教学科研奖励计划基金. |
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| 摘 要： | 研究光学非接触方法探测高功率激光产生的等离子体和冲击波实验中的衍射现象，运用衍射理论和透镜成像原理，提出让待测区与接收器件成物像共轭关系，以克服衍射效应带来的对等离子体和冲击波测量误差的方法，并从理论上导出：当等离子体区域与相机位置相对于成像透镜满足物像关系时，衍射效应的影响被显著消除，通过激光作用于铝靶的实验结果，验证这一方法的可行性。
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| 关 键 词： | 衍射效应 激光等离子体 光学测量 |
| 文章编号： | 1005-9830（2005）06-0684-03 |
| 收稿时间： | 2005-05-27 |
| 修稿时间： | 2005-05-272005-10-18 |
Elimination of Diffraction Effect in Exploring Plasma and Shock Wave Produced by High-power Laser |
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| LI Ming,LIU Jun,SHEN Zhong-hua,LU Jian,NI Xiao-wu. Elimination of Diffraction Effect in Exploring Plasma and Shock Wave Produced by High-power Laser[J]. Journal of Nanjing University of Science and Technology(Nature Science), 2005, 29(6): 684-686,719 |
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| Authors: | LI Ming LIU Jun SHEN Zhong-hua LU Jian NI Xiao-wu |
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| Affiliation: | 1. School of Sciences, NUST, Nanjing 210094, China; 2. Teaching Affair Office, Huaihai Institute of Technology, lianyungang 222005, China |
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| Abstract: | The diffraction effects in exploring plasma and shock wave produced by high-power laser by optical non-contacting methods were studied.The diffraction theory and imaging theory of lens were used.A new method was presented:When the receiving element makes a conjugate body-image relationship with the measuring region,the error caused by diffraction effects in measuring the plasma and shock wave can be overcome obviously.The conclusion is deduced in theory.The feasibility is verified by combining the experimental results. |
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| Keywords: | diffraction effect laser plasma optical measurement |
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