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

被引：22

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

页码：2065 / 2071

页数：7

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