Coherent subterahertz radiation from femtosecond infrared filaments in air

被引：188

作者：

Tzortzakis, S ^{[1
]}

Méchain, G

Patalano, G

André, YB

Prade, B

Franco, M

Mysyrowicz, A

Munier, JM

Gheudin, M

Beaudin, G

Encrenaz, P

机构：

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

[2] Observ Paris, F-75014 Paris, France

来源：

OPTICS LETTERS | 2002年 / 27卷 / 21期

关键词：

D O I：

10.1364/OL.27.001944

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on what is believed to be the first observation of coherent subterahertz (sub-THz) emission from a 1-m string in the atmosphere. The sub-THz pulse emitted by the filamentary structure from an intense IR femtosecond laser pulse is detected perpendicularly to the laser propagation axis by use of two heterodyne detectors at 94 +/- 1 and 118 +/- 1 GHz. We describe the characteristics of this emission and show evidence of constructive interference between two separate strings. (C) 2002 Optical Society of America.

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页码：1944 / 1946

页数：3

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