Effects of relativistic and channel focusing on an intense laser beam propagating in a plasma channel: variational analysis

被引：20
|
作者：
Liu, MW [1 ]
Guo, H
Zhou, BJ
Li, WB
Li, B
Wu, GH
机构：
[1] Hunan Univ Sci & Technol, Sch Phys, Xiangtan 411201, Hunan, Peoples R China
[2] Peking Univ, Key Lab Quantum Informat & Measurements, Minist Educ, Sch Elect Engn & Comp Sci,LP01 Grp, Beijing 100871, Peoples R China
[3] Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China
[4] S China Normal Univ, Lab Light Transmiss Opt, LP01 Grp, Guangzhou 510631, Peoples R China
来源：
PHYSICS LETTERS A | 2004年 / 333卷 / 5-6期
基金：
中国国家自然科学基金;
关键词：
relativistic effects; channel focusing; plasma channel; variational analysis;
D O I：
10.1016/j.physleta.2004.10.069
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Propagation of an intense laser beam in a plasma channel is analyzed by means of the variational method. A differential equation of the spot size is derived including the effects of relativistic self-focusing (RSF), ponderomotive self-channeling (PSC) and preformed channel focusing (CF). The effect of PSC enhances beam focusing and is negligible only in the region of beam defocusing oscillations. And the periods of beam oscillations are obtained. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：478 / 484
页数：7
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