期刊文献+

Nonlinear propagation of an intense Laguerre-Gaussian laser pulse in a plasma channel

原文传递
导出
摘要 The nonlinear propagation of an intense Laguerre-Gaussian(LG)laser pulse in a parabolic preformed plasma channel is analyzed by means of the variational method.The evolution equation of the spot size is derived including the effects of relativistic self-focusing,preformed channel focusing,and ponderomotive self-channeling.The parametric conditions of the LG laser pulse and plasma channel for propagating with constant spot size,periodically focusing and defocusing oscillation,catastrophic focusing,and solitary waves are obtained.Compared with the laser pulse with fundamental Gaussian(FG)mode,it is found that the effect of vacuum diffraction is reduced by half and the effects of relativistic and wakefield focusing are decreased by a quarter due to the hollow transverse intensity profile of the LG laser pulse,while the effect of channel focusing is the same order of magnitude with that of the FG laser pulse.Thus,the matched condition for the intense LG laser pulse with constant spot size is released obviously,while the parameters of the laser and plasma for the existence of solitary waves nearly coincide with those of the FG laser pulse.
作者 Mingping Liu Zhen Zhang Suhui Deng 刘明萍;张震;邓素辉(School of Information Engineering,Nanchang University,Nanchang 330031,China)
出处 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第5期499-506,共8页 中国物理B(英文版)
基金 the National Natural Science Foundation of China(Grant Nos.61665006 and 61865011) the Natural Science Foundation of Jiangxi Province of China(Grant Nos.20171ACB21018,20161BAB212041,and 20162BCB23012).
  • 相关文献

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部