Observation of a strong correlation between electromagnetic soliton formation and relativistic self-focusing for ultra-short laser pulses propagating through an under-dense plasma

被引：16
作者：
Zhu, Bin [1 ]
Wu, Yu-Chi [1 ]
Dong, Ke-Gong [1 ]
Hong, Wei [1 ]
Teng, Jian [1 ]
Zhou, Wei-Min [1 ]
Cao, Lei-Feng [1 ]
Gu, Yu-Qiu [1 ]
机构：
[1] China Acad Engn Phys, Laser Fus Res Ctr, Sci & Technol Plasma Phys Lab, Mianyang, Peoples R China
来源：
PHYSICS OF PLASMAS | 2012年 / 19卷 / 10期
基金：
中国国家自然科学基金;
关键词：
CHANNEL FORMATION; INSTABILITIES; GENERATION; WAVES; BEAMS;
D O I：
10.1063/1.4757982
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：
A strong correlation is observed between the formation of electromagnetic solitons, generated during the interaction of a short intense laser pulse (30 fs, similar to 10(18) W/cm(2)) with a rarefied (<0.1n(c)) plasma, and pulse self-focusing. Pulse defocusing, which occurs after soliton generation, results in laser-pulse energy depletion. The role of stimulated Raman scattering in soliton generation is analyzed from 2D particle-in-cell simulations. An observed relationship between initial plasma density and soliton generation is presented that might have relevance to wake-field accelerators. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4757982]
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页数：7
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