【摘要】 本文详细研究了双频激光驱动的朗缪尔(Langmuir)波所呈现的双稳态效应。完全相对论性地导出了郎缪尔波振幅和位相的演变方程,分别研究了朗缪尔波饱和振幅和稳态振幅对等离子体频率和泵浦光强的双稳态响应,并讨论了滞后效应在激光等离子体拍频加速器中的应用。此外,还研究了在双稳态临界点附近朗缪尔波振幅随时间的变化特性。更多还原

【Abstract】 This paper presents detailed studies on the bistability exhibited by the Langmuir-wave driven by a two-frequency laser. The equations governing the evolution of the amplitude and phase of the Langmuir-wave are derived fully relativistically. The bistable responses of both the saturated amplitude and steady amplitude of the Langmuirwave with respect to plasma frequency and pump intensity are studied, and the applications of hysteresis to laser-plasma Beat-Wave Accelerator are discussed. Finally the properties of the time evolution of the Langmuir-wave amplitude near the critical poim of the bistability are also investigated.更多还原