Open AccessPlasma Bragg gratings generated by the interaction of two counter-propagating laser pulses with plasmas
Author(s) -
Luan Shi-Xia,
Qiuju Zhang,
Gui Wei-ling
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.7030
Subject(s) - plasma , ponderomotive force , laser , physics , picosecond , grating , atomic physics , optics , electron , electron density , materials science , quantum mechanics
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.