Ultra-intense single attosecond pulse generated from circularly polarized laser interacting with overdense plasma

被引：24

作者：

Ji, Liangliang ^{[1
]}

Shen, Baifei ^{[1
]}

Zhang, Xiaomei ^{[1
]}

Wen, Meng ^{[1
]}

Xia, Changquan ^{[1
]}

Wang, Wenpeng ^{[1
]}

Xu, Jiancai ^{[1
]}

Yu, Yahong ^{[1
]}

Yu, Mingyang ^{[2
]}

Xu, Zhizhan ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

[2] Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310027, Peoples R China

来源：

PHYSICS OF PLASMAS | 2011年 / 18卷 / 08期

基金：

中国国家自然科学基金;

关键词：

HARMONICS;

D O I：

10.1063/1.3623588

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：

Few-cycle relativistic circularly polarized (CP) laser pulse reflected from overdense plasma is investigated by analysis and particle-in-cell simulations. It is found that through the laser-induced one-time drastic oscillation of the plasma boundary, an ultra-intense single attosecond light pulse can be generated naturally. An analytical model is proposed to describe the interaction and it agrees well with simulation results. They both indicate that peak intensity of the generated attosecond pulse is higher when the plasma density is closer to the relativistic transparency threshold and/or the pulse duration is closer to plasma oscillating period. Two dimensional simulation shows that a two-cycle 10(21) W/cm(2) CP laser can generate a single 230 attosecond 2 x 10(21) W/cm(2) pulse of light at a conversion efficiency greater than 10(-2). (C) 2011 American Institute of Physics. [doi: 10.1063/1.3623588]

引用

页数：6

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