Self-channelling of intense laser pulses in underdense plasma and stability analysis

被引:5
|
作者
Naseri, N. [1 ,3 ,4 ]
Rozmus, W. [1 ]
Pesme, D. [1 ,2 ]
机构
[1] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada
[2] Ecole Polytech, Ctr Phys Theor, F-91128 Palaiseau, France
[3] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA
[4] Univ Texas Austin, Inst Fus Studies, Austin, TX 78712 USA
关键词
PROPAGATION; BEAM;
D O I
10.1063/1.4966560
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Self-channelling of intense laser pulses have been studied in underdense plasma using threedimensional particle-in-cell simulations, for different laser powers and plasma densities as well as analytical theory. It is found that single channel solution occurs for laser powers above the threshold power (similar to 1.1P(cr)) and for plasma densities n < 0.1n(cr). For higher laser powers P > 33P(cr), ring structure, an evacuated ring enclosed by electron filament, was observed in the simulations as predicted by analytical model. The stability of ring structure against symmetric and asymmetric azimuthal perturbations have been discussed. Published by AIP Publishing.
引用
收藏
页数:10
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