Effects of relativistic and channel focusing on q-Gaussian laser beam propagating in a preformed parabolic plasma channel

被引：23
|
作者：
Wang, Li [1 ]
Hong, Xue-Ren [1 ]
Sun, Jian-An [1 ]
Tang, Rong-An [1 ]
Yang, Yang [1 ]
Zhou, Wei-Jun [1 ]
Tian, Jian-Min [1 ]
Duan, Wen-Shan [1 ]
机构：
[1] Northwest Normal Univ, Coll Phys & Elect Engn, Key Lab Atom & Mol Phys & Funct Mat Gansu Prov, Lanzhou 730070, Peoples R China
来源：
PHYSICS LETTERS A | 2017年 / 381卷 / 25-26期
基金：
中国国家自然科学基金;
关键词：
q-Gaussian laser beam; Preformed plasma channel; Propagation characteristic; HARMONIC-GENERATION; ACCELERATION; PULSE; LIGHT; FIELD;
D O I：
10.1016/j.physleta.2017.04.033
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The propagation of q-Gaussian laser beam in a preformed plasma channel is investigated by means of the variational method. A differential equation for the spot size has been obtained by including the effects of relativistic self-focusing, ponderomotive self-channeling and preformed channel focusing. The propagation behaviors and their corresponding physical conditions are identified. The comparison of the propagation between q-Gaussian and Gaussian laser beams is done by theoretical and numerical analysis. It is shown that, in the same channel, the focusing power of q-Gaussian laser beam is lower than that of Gaussian laser beam, i.e., the q-Gaussian laser beam is easier to focus than Gaussian laser beam. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：2065 / 2071
页数：7
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