laser等离子体中运动的弱相对论电磁孤子
Moving weakly relativistic electromagnetic solitons in laser-plasmas
摘要：
研究了线偏振激光与低密度冷等离子体相互作用中形成的一维运动电磁孤子。强激光中的相对论洛伦兹力推动电子作纵向运动，产生耦合的横向-横波模。在弱相对论近似下，这些模式可以用一个广义非线性薛定谔型动力学方程很好地描述，其中增加了两个非局域项[1]。本文以隐式形式计算了一个运动电磁孤子的原始解析解。孤子的运动使孤子的本征频率下移，振幅减小。分析预测了孤子速度对稳定性的影响。
英文摘要：
A case of moving one-dimensional electromagnetic (EM) solitons formed in a relativistic interaction of a linearly polarized laser light with underdense cold plasma is investigated. The relativistic Lorentz force in an intense laser light pushes electrons into longitudinal motion generating coupled longitudal-transverse wave modes. In a weakly relativistic approximation these modes are well described by a dynamical equation of the generalized nonlinear Schrodinger type, with two additional nonlocal terms [1]. An original analytical solution for a moving EM soliton case is here calculated in an implicit form. The soliton motion down-shifts the soliton eigen-frequency while decreases its amplitude. An influence of the soliton velocity on stability properties is analytically predicted.
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