强激光与粒子束, 2013, 25 (4): 813, 网络出版: 2013-03-27   

超短脉冲激光产生等离子体通道寿命研究

Numerical study on prolonging lifetime of plasma channels generated by ultra-short laser pulses
作者单位
中国科学院 安徽光学精密机械研究所, 大气成分与光学重点实验室, 合肥 230031
摘要
利用强飞秒激光在大气中产生等离子体通道内带电粒子的动力学模型, 综合考虑二体吸附、三体吸附、离解和复合等因素, 分析后续激光退吸附作用对等离子体通道寿命的影响, 给出有效延长通道寿命的后续激光控制参量。计算表明, 选择不同的激光注入形式和注入时间, 对通道寿命的延长有着不同的效果, 适当优化的激光可以延长通道寿命达25 μs以上。
Abstract
The density and decay kinetics of a plasma channel produced in air by a self-guided intense femtosecond laser pulse is investigated by numerical simulation method. The two-body, three-body dissociation attachment and the recombination of the free electrons, positive and negative ions are considered in the theoretical model. The influence of dissociation attachment caused by the subsequently incident laser on the generated plasma channel has been studied and the effective control parameters of the subsequent laser can be obtained. The calculation shows that the lifetime of the channel is sensitive to the initial conditions of the subsequent laser and the relative delay between the subsequent laser and the maximum plasma density. The corresponding lifetime of the revived plasma channel can be efficiently extended to more than 25 μs, in the case that the subsequent laser is sufficiently controlled under optimum parameters.

陈文, 范承玉, 王海涛, 张鹏飞, 张京会, 乔春红, 马慧敏. 超短脉冲激光产生等离子体通道寿命研究[J]. 强激光与粒子束, 2013, 25(4): 813. Chen Wen, Fan Chengyu, Wang Haitao, Zhang Pengfei, Zhang Jinghui, Qiao Chunhong, Ma Huimin. Numerical study on prolonging lifetime of plasma channels generated by ultra-short laser pulses[J]. High Power Laser and Particle Beams, 2013, 25(4): 813.

本文已被 6 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!