| 空气击穿过程中电子损耗对击穿阈值的影响 |
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| 引用本文： | 张平 卞保民 钱彦 李振华 贺安之 倪晓武. 空气击穿过程中电子损耗对击穿阈值的影响[J]. 激光技术, 2005, 29(5): 501-503,506 |
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| 作者姓名： | 张平 卞保民 钱彦 李振华 贺安之 倪晓武 |
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| 作者单位： | 1.南京理工大学, 信息物理与工程系, 南京, 210094 |
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| 基金项目： | 国家自然科学基金资助项目（60378003） |
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| 摘 要： | 通过对高功率激光空气击穿的物理机理、电离机制的讨论,得到空气击穿过程中激光焦区内自由电子密度公式。考虑电子弹性碰撞损耗、电子复合损耗影响,给出了新的击穿阈值公式。该公式的计算结果同实验数据一致。
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| 关 键 词： | 空气击穿 电子密度 阈值 雪崩电离 |
| 文章编号： | 1001-3806（2005）05-0501-03 |
| 收稿时间： | 2004-06-26 |
| 修稿时间： | 2004-06-262004-09-07 |
The influence of electron loss on threshold value in the process of optical breakdown in air |
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| ZHANG Ping,BIAN Bao-min, QIAN Yan ,LI Zhen-hua ,HE An-zhi,Nl Xiao-wu. The influence of electron loss on threshold value in the process of optical breakdown in air[J]. Laser Technology, 2005, 29(5): 501-503,506 |
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| Authors: | ZHANG Ping BIAN Bao-min QIAN Yan LI Zhen-hua HE An-zhi Nl Xiao-wu |
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| Affiliation: | Department of Information Physics and Engineering,Nanjing University of Science and Technology, Nanjing 210094 ,China |
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| Abstract: | Through discussing physical mechanism of optical breakdown in air caused by high power laser and ionization, the formula of free electron density in laser focus regime was attained. In addition, the breakdown threshold formula was also obtained after considering the energy loss of electron elastic collision and recombination. The calculated results are consistent with the experimental data. |
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| Keywords: | optical breakdown in air electron density threshold value cascade ionization |
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