Self focusing and axial phase modulation of laser beams carrying orbital angular momentum in collisionless plasmas

被引：23
作者：
Gupta, Naveen [1 ]
机构：
[1] Lovely Profess Univ, Phagwara, India
来源：
OPTICAL AND QUANTUM ELECTRONICS | 2021年 / 53卷 / 11期
关键词：
Self focusing; Laguerre Gaussian; Axial phase modulation; Ponderomotive force; Self trapping; RADIATION; LIGHT;
D O I：
10.1007/s11082-021-03274-3
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Nonlinear optical self action effects of intense laser beams propagating through underdense plasmas have been investigated theoretically. The optical nonlinearity of the plasma has been modelled by ponderomotive force originating through intensity gradient over the cross section of the laser beam. In order to investigate the effect of angular twist of the laser beam, the irradiance over its cross section has been considered to be Laguerre Gaussian (L.G). Formulation is based on finding semi analytical solution for the wave equation for the field of laser beam with the help of moment theory approach.
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页数：18
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