%0 Journal Article
%T Theoretical and numerical investigation for propagation of ultrashort intense laser pulse in plasma channel<br>超短强激光脉冲在等离子体隧道中传输的理论与数值模拟研究
%A Tang Hu
%A Guo Hong
%A Liu Ming-Wei
%A Qiu Yun-Li
%A Deng Dong-Mei
%A <br>唐华
%A 郭弘
%A 刘明伟
%A 仇云利
%A 邓冬梅
%J 物理学报
%D 2003
%I 
%X Characteristics of propagation of ultrashort intense laser pulses in a partially stripped pre-formed plasma channel, assumed to be parabolic and unperturbed, are discussed. From Maxwell equations the refractive index equation and Hamilton-Jacobi equation, which describe the evolution of the electric field, are derived including the effects of the diffraction, the third-order intensity-dependent nonlinearity, plasma defocusing, the self-focusing of the plasma channel, and t he relativistic self-focusing. The envelope equation of laser propagating in the plasma channel, and the general expression relating the laser spot size with th e propagation distance and the width of the plasma channel etc., are derived bas ed on the Hamilton-Jacobi equation and the refractive index equation.
%K plasma channel focusing
%K relativistic self-focusing
%K potential well<br>等离子体隧道聚焦，
%K 相对论自聚焦，
%K 势阱
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=46DBBD63936DACF8&yid=D43C4A19B2EE3C0A&vid=286FB2D22CF8D013&iid=9CF7A0430CBB2DFD&sid=7032F4C1AAED728E&eid=FBEA8C467B1EDA46&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=11