Resonant second harmonic generation in plasma by self-focused twisted beam

被引：8
|
作者：
Vaziri, Mohammad [1 ]
Sohailya, Sozha [1 ]
Bahrampour, Alireza [2 ]
机构：
[1] Islamic Azad Univ, Kerman Branch, Dept Phys, Kerman, Iran
[2] Sharif Univ Technol, Dept Phys, Tehran, Iran
来源：
OPTICS COMMUNICATIONS | 2015年 / 341卷
关键词：
Second harmonic generation; Self-focusing; Laguerre-Gaussian beam and wiggler magnetic field; HARMONIC-GENERATION; LASER; RADIATION; LIGHT;
D O I：
10.1016/j.optcom.2014.12.020
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The resonant second harmonic generation in the presence of a wiggler magnetic field by twisted laser plasma interaction is surveyed. The wiggler magnetic field provides additional momentum required for the phase matching. The Laguerre-Gaussian modes can be used to control the self-focusing and improve the second harmonic generation in laser plasma interaction. The wave equations for the fundamental and the second harmonic fields have been solved in the paraxial approximation. The generation of the second harmonic considering self-focusing is investigated. Also, the dependence of the second harmonic power on the propagation distance for different values of initial fundamental beam intensity, vortex charge number of the doughnut main beam and plasma density has been obtained. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：295 / 301
页数：7
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