Polarization analysis of terahertz radiation generated by four-wave mixing in air

被引：42

作者：

Houard, Aurelien ^{[1
]}

Liu, Yi ^{[1
]}

Prade, Bernard ^{[1
]}

Mysyrowicz, Andre ^{[1
]}

机构：

[1] Ecole Natl Super Tech Avancees, CNRS, UMR 7639, Ecole Polytech,Lab Opt Appl, F-91761 Palaiseau, France

来源：

OPTICS LETTERS | 2008年 / 33卷 / 11期

关键词：

D O I：

10.1364/OL.33.001195

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We examine the generation of terahertz (THz) by optical rectification of a fundamental infrared beam with its first harmonic in ionized air. From polarization measurements we identify an important, yet so far unreported (to our knowledge), cross term (chi((3))(xyxy) + chi((3))(xyxy)) of the nonlinear susceptibility tensor. Omission of this term leads to an error by a factor of 10(6) of the THz intensity obtained with certain polarization configurations. (C) 2008 Optical Society of America.

引用

页码：1195 / 1197

页数：3

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