Intense terahertz emission from relativistic circularly polarized laser pulses interaction with overdense plasmas

被引：16

作者：

Chen, Zi-Yu ^{[1
]}

Li, Xiao-Ya ^{[1
]}

Yu, Wei ^{[2
]}

机构：

[1] China Acad Engn Phys, Inst Fluid Phys, Natl Key Lab Shock Wave & Detonat Phys, Mianyang 621900, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China

来源：

PHYSICS OF PLASMAS | 2013年 / 20卷 / 10期

基金：

中国国家自然科学基金;

关键词：

GENERATION; RADIATION;

D O I：

10.1063/1.4826508

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：

During the interaction of a relativistic circularly polarized laser pulse with an overdense plasma target, the longitudinal motion of bunches of electrons under the action of light pressure and electrostatic restore force can emit intense terahertz (THz) pulses. This mechanism allows high pump laser intensity and large electron number participating in the emission. Two-dimensional particle-in-cell simulations are carried out to investigate the THz emission. The results suggest that such a source can produce remarkably intense THz pulses with energy of several mJ/sr and power of tens of gigawatts, which could find applications in nonlinear studies and relativistic laser-plasma interaction diagnostics. (C) 2013 AIP Publishing LLC.

引用

页数：6

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