中文摘要：

讨论了一维情况下，超短强激光脉冲在部分离化等离子体中的传播和包络形孤波的形成。在弱相对论近似下，分析了激光脉冲的传播方程。结果表明在超短宽束激光脉冲条件卜，相对论非线性和有质动力非线性相互抵消，相互作用过程中的非线性主要来自部分离化等离子体的非线性极化，由此得到传播过程中修正的非线性薛定谔（NLS）方程并讨论了其孤子解。

英文摘要：

We discuss the one-dimensional electro magnetic （EM） envelope solitons of ultra short intense laser pulse in partially stripped plasmas. We analyze the wave equation of an intense laser pulse propagating in partially stripped plasmas using the weakly relativistic assumption. The results show that in the broad beam limit, the striction nonlinearity and the relativistic nonlinearity cancelled each other, and the nonlinearity mainly comes from the nonlinear polarization. Finally, we obtain the nonlinear Schrodinger equation for the propagation and discuss the soliton solution.