%0 Journal Article
%T Plasma Bragg gratings generated by the interaction of two counter-propagating laser pulses with plasmas<br>交叉传播激光脉冲与等离子体相互作用产生的等离子体密度光栅
%A Luan Shi-Xi
%A Zhang Qiu-Ju
%A Gui Wei-Ling
%A <br>栾仕霞
%A 张秋菊
%A 桂维玲
%J 物理学报
%D 2008
%I 
%X Solutions of electron and ion density gratings at the linear stage are given. Deep plasma gratings produced by the ponderomotive force of the interference of the two intersecting laser pulses are investigated. Dependence of the plasma grating on the plasma density, duration and intensity of the laser pulses are studied with 1D particle-in-cell (PIC) simulation. It is found that the density of peaks of such gratings can be 8 times the initial plasma density and can last a few picoseconds. We have found stable, long-lifetime electromagnetic solitons by use of these gratings. It is shown that the intensity for the formation of relativistic EM solitons with two crossed-propagating pulses is reduced to a great extent.
%K plasma Bragg grating
%K electromagnetic soliton
%K counter-propagating laser pulses
%K particle-in-cell simulation<br>等离子体布拉格光栅
%K 电磁孤子
%K 交叉传播激光束
%K 粒子模拟
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=59B4728AC23E85691192A0469DC6E224&yid=67289AFF6305E306&vid=11B4E5CC8CDD3201&iid=708DD6B15D2464E8&sid=11ABC229A5C76F70&eid=F9975D3E92D0297D&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0