Terahertz emission from a dc-biased two-color femtosecond laser-induced filament in air

被引：48
|
作者：
Wang, Tie-Jun [1 ,2 ]
Marceau, Claude [1 ,2 ]
Chen, Yanping [1 ,2 ]
Yuan, Shuai [1 ,2 ]
Theberge, Francis [3 ]
Chateauneuf, Marc [3 ]
Dubois, Jacques [3 ]
Chin, See Leang [1 ,2 ]
机构：
[1] Univ Laval, Dept Phys Genie Phys & Opt, Quebec City, PQ G1V 0A6, Canada
[2] Univ Laval, COPL, Quebec City, PQ G1V 0A6, Canada
[3] Def Res & Dev Canada Valcartier, Quebec City, PQ G3J 1X5, Canada
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 21期
基金：
加拿大自然科学与工程研究理事会; 加拿大创新基金会;
关键词：
high-speed optical techniques; light polarisation; multiwave mixing; PULSE GENERATION; FIELD;
D O I：
10.1063/1.3441004
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The generation of terahertz (THz) emission from a dc-biased two-color femtosecond laser-induced filament in air was systematically investigated. A polarization analysis demonstrated that the THz emission could be the sum of two components: one generated by two-color laser-induced filamentation and the second induced by the external dc electric field. The first component is mostly from four-wave mixing process and a transient transverse electric current under the action of the external dc field could be responsible for the second THz emission. (C) 2010 American Institute of Physics. [doi:10.1063/1.3441004]
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页数：3
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