Laser driven terahertz generation in hot plasma with step density profile

被引：30
作者：
Kumar, Manoj [1 ]
Tripathi, Vipin Kumar [2 ]
Jeong, Young Uk [1 ]
机构：
[1] Korea Atom Energy Res Inst, Ctr Quantum Beam Based Radiat Res, Taejon 305353, South Korea
[2] Indian Inst Technol Delhi, Dept Phys, New Delhi 110016, India
来源：
PHYSICS OF PLASMAS | 2015年 / 22卷 / 06期
基金：
新加坡国家研究基金会;
关键词：
PULSES;
D O I：
10.1063/1.4922675
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：
An analytical formalism of terahertz (THz) radiation generation by beating of two lasers in a hot plasma with step density profile is developed. The lasers propagate obliquely to plasma surface normal, and the nonlinearity arises through the ponderomotive force. The THz is emitted in the specular reflection direction, and the yield is enhanced due to coupling with the Langmuir wave when the plasma frequency is close to THz frequency. The power conversion efficiency maximizes at an optimum angle of incidence. (C) 2015 AIP Publishing LLC.
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页数：3
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