Elliptically polarized Terahertz emission through four-wave mixing in a two-color filament in air

被引：34

作者：

Chen, Yanping ^{[1
,2
]}

Marceau, Claude ^{[1
,2
]}

Genier, Simon ^{[1
,2
]}

Theberge, Francis ^{[3
]}

Chateauneuf, Marc ^{[3
]}

Dubois, Jacques ^{[3
]}

Chin, See Leang ^{[1
,2
]}

机构：

[1] Univ Laval, Ctr Opt Photon & Laser, Quebec City, PQ G1V 0A6, Canada

[2] Univ Laval, Dept Phys Genie Phys & Opt, Quebec City, PQ G1V 0A6, Canada

[3] Def Res & Dev Canada Valcartier, Quebec City, PQ G3J 1X5, Canada

来源：

OPTICS COMMUNICATIONS | 2009年 / 282卷 / 21期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Terahertz (THz); Filamentation; Four-wave rectification; Elliptical polarization; LASER-PULSES; GENERATION; GAS; INTENSITY; ZNTE;

D O I：

10.1016/j.optcom.2009.07.044

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We diagnosed the polarization characteristics of Terahertz emission from a two-color femtosecond laser filament when the polarizations of omega and 2 omega beams are orthogonal. We discovered that the THz pulse is elliptically polarized. The generation mechanism could be through four-wave optical rectification inside the filament zone where the inversion symmetry of air is broken. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：4283 / 4287

页数：5

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