Determination of the inertial contribution to the nonlinear refractive index of air, N-2, and O-2 by use of unfocused high-intensity femtosecond laser pulses

被引：342

作者：

Nibbering, ETJ

Grillon, G

Franco, MA

Prade, BS

Mysyrowicz, A

机构：

[1] Lab. d'Optique Appliquée, Ecl. Natl. Sup. Techniques A., Ctr. Natl. Rech. Sci. U. Rech. A., F-91120 Palaiseau, Batterie de l'Yvette

[2] Max-Born-Inst. F. Nichtlineare O., Bereich C, D-12489 Berlin

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1997年 / 14卷 / 03期

关键词：

D O I：

10.1364/JOSAB.14.000650

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We analyze the spectral changes that occur when unfocused intense femtosecond pulses at 800 nm propagate through different atomic and molecular gases. The observed red shift in the self-phase-modulated spectra after propagation through N-2, O-2, and air is attributed to a delayed change of the nonlinear refractive index, a consequence of the molecular response to impulsive excitation of rotational coherences. We compare these results on the nonlinear refractive index with those obtained from Ar, Xe, and SF6. (C) 1997 Optical Society of America.

引用

页码：650 / 660

页数：11

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