Measurement of the nonlinear refractive index of air constituents at mid-infrared wavelengths

被引：94
|
作者：
Zahedpour, S. [1 ]
Wahlstrand, J. K. [1 ]
Milchberg, H. M. [1 ]
机构：
[1] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA
来源：
OPTICS LETTERS | 2015年 / 40卷 / 24期
基金：
美国国家科学基金会;
关键词：
FEMTOSECOND FILAMENTATION; FREQUENCY-DEPENDENCE; TRANSPARENT MEDIA; MOLECULAR GASES; SINGLE-SHOT; HYPERPOLARIZABILITIES; POLARIZABILITY; DISPERSION; DYNAMICS; PULSES;
D O I：
10.1364/OL.40.005794
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We measure the nonlinear refractive index coefficients in N-2, O-2, and Ar from visible through mid-infrared wavelengths (lambda = 0.4-2.4 mu m). The wavelengths investigated correspond to transparency windows in the atmosphere. Good agreement is found with theoretical models of chi((3)). Our results are essential for accurately simulating the propagation of ultrashort mid-infrared pulses in the atmosphere. (C) 2015 Optical Society of America
引用
收藏
页码：5794 / 5797
页数：4
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