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| 强激光束在等离子体通道中传输的变分法研究 | |
| 引用本文： | 刘明伟,郭弘,邓冬梅,张宇,陈徐宗.强激光束在等离子体通道中传输的变分法研究[J].物理学报,2004,53(5):1419-1424. |
| 作者姓名： | 刘明伟 郭弘 邓冬梅 张宇 陈徐宗 |
| 作者单位： | 1. 华南师范大学传输光学实验室,广州,510631;北京大学信息科学技术学院量子信息与测量教育部重点实验室,北京,100871 2. 华南师范大学传输光学实验室,广州,510631;北京应用物理与计算数学研究所,北京,100088;北京大学信息科学技术学院量子信息与测量教育部重点实验室,北京,100871 3. 华南师范大学传输光学实验室,广州,510631 4. 北京大学信息科学技术学院量子信息与测量教育部重点实验室,北京,100871 |
| 基金项目： | 国家自然科学基金重点项目(批准号:69789801)，国家高技术惯性约束聚变主题、霍英东基金(批准号:71058)，广东省团队项目(批准号:20003061)，国家教育部骨干青年教师基金资助的课题~~ |
| 摘 要： | 关键词： |
| 关 键 词： | 等离子体通道 变分法 高阶相对论 激光束 真空衍射 傍轴近似 |
| 文章编号： | 1000-3290/2004/53(05)/1419-06 |
Variational method in the study of intense laser beams propagation in plasma channels |
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| Liu Ming-Wei,Guo Hong,Deng Dong-Mei,Zhang Yu and Chen Xu-Zong.Variational method in the study of intense laser beams propagation in plasma channels[J].Acta Physica Sinica,2004,53(5):1419-1424. | |
| Authors: | Liu Ming-Wei Guo Hong Deng Dong-Mei Zhang Yu and Chen Xu-Zong |
| Abstract: | In an underdense plasma, the laser wave equation is given with higher-order-relativistic (HOR) effect. A variational methed is used to study HOR effect for intense laser beam propagation in plasma channel including diffraction, pre-formed plasma channel guiding and lower order relativistic effects. In the paraxial approximation, a potential well also exists for laser spot size. HOR effect decreases the amplitude of laser spot size oscillation, whereas accelerates its rate. Furthermore, it prevents the singularity of infinite intesity of laser beam when laser power is greater than (or equal to) the relativistic critical power. The condition of balance-solution of the beam spot size is also given. |
| Keywords: | variational method plasma channel higher-order-relativistic |
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