Third and fifth harmonic generation by tightly focused femtosecond pulses at 2.2 μm wavelength in air

被引：32

作者：

Ariunbold, Gombojav O. ^{[1
]}

Polynkin, Pavel ^{[1
]}

Moloney, Jerome V. ^{[1
]}

机构：

[1] Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 02期

关键词：

HIGHER-ORDER KERR; LASER-PULSES; FILAMENTATION; IONIZATION; LIGHT;

D O I：

10.1364/OE.20.001662

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report experiments on the generation of third and fifth harmonics of millijoule-level, tightly focused, femtosecond laser pulses at 2.2 mu m wavelength in air. The measured ratio of yields of the third and fifth harmonics in our setup is found equal to 2 . 10(-4). This result contradicts the recent suggestion that the Kerr effect in air saturates and changes sign in ultra-intense optical fields. (C) 2012 Optical Society of America

引用

页码：1662 / 1667

页数：6

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