[1]李 明,y,刘 骏,等.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,(06):684-686.
 LI Ming~.Elimination of Diffraction Effect in Exploring Plasma and Shock Wave Produced by High-power Laser[J].Journal of Nanjing University of Science and Technology,2005,(06):684-686.
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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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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2005年06期
页码:
684-686
栏目:
出版日期:
2005-12-30

文章信息/Info

Title:
Elimination of Diffraction Effect in Exploring Plasma and Shock Wave Produced by High-power Laser
作者:
李 明1 2 y 刘 骏1 沈中华1 陆 建1 倪晓武1
1. 南京理工大学理学院, 江苏南京210094; 21 淮海工学院教务处, 江苏连云港222005
Author(s):
LI Ming~
1,2),LIU Jun~1,SHEN Zhong-hua~1,LU Jian~1,NI Xiaowu~1
关键词:
衍射效应 激光等离子体 光学测量
Keywords:
diffract ion effect laser plasma optical measurement
分类号:
TN241
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。
Abstract:
The diffraction effects in exploring plasma and shock wave produced by high-power laser by opt ical 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 diffract ion 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.

参考文献/References:

[ 1] Lauterborn W. High- speed photography of laser- induced breakdown in liquids[ J] .Appl Phys Lett 1972, 21( 1) : 27- 29.
[ 2] 陆建, 倪晓武, 贺安之. 激光与材料相互作用物理学 [M] . 北京: 机械工业出版社, 1996.
[ 3] Chen X, Xu R Q, Shen Z H, et al. Propagation of shock wave and oscillation of cavitation bubble by Nd: YAG laser ablation of a metal in water [ J] . Applied Optics, 2004, 43 ( 16) : 3 251- 3 257.
[ 4] Ni X W, Lu J, Shen Z H. Interferometric diagnosis of laserproduced- plasma on an aluminum target [ J] . Microwave and Optical Technology letters, 1997, 14( 5) : 271- 274.
[ 5] 陆建, 倪晓武, 阎大鹏. 调Q 激光引诱固体表面击穿高速摄影研究[ J] . 激光技术, 1989, 13( 3) : 17- 21.
[ 6] Lu J, Ni X W, He A Z. An interferometric investigation of ignition of a laser supported detonation wave and its propagation[ J] . Optics Communication, 1995, 120( 3/ 4) : 144- 148.

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备注/Memo

备注/Memo:
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
作者简介: 李明( 1958- ) , 江苏连云港人, 博士生, 副教授, 主要研究方向: 激光与物质相互作用等, E-mail: lygliming@ yahoo.com. cn。
更新日期/Last Update: 2013-03-03