Nonlinear Interaction of Elliptical Laser Beam with Collisional Plasma：Effect of Linear Absorption

作     者：keshav walia sarabjit kaur 

作者机构：Department of Physics DAV University Jalandhar Punjab-144012 India 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2016年第65卷第1期

页      面：78-82页

核心收录：

学科分类：07[理学] 070204[理学-等离子体物理] 0704[理学-天文学] 0702[理学-物理学] 

主　　题：非线性相互作用 碰撞等离子体 吸收效应 激光束 椭圆 等离子体密度 非线性微分方程 波束宽度 

摘      要：In the present work,nonlinear interaction of elliptical laser beam with collisional plasma is studied by using paraxial ray approximation.Nonlinear differential equations for the beam width parameters of semi-major axis and semi-minor axis of elliptical laser beam have been set up and solved numerically to study the variation of beam width parameters with normalized distance of propagation.Effects of variation in absorption coefficient and plasma density on the beam width parameters are also analyzed.It is observed from the analysis that extent of self-focusing of beam increases with increase/decrease in plasma density/absorption coefficient.