Observation of a Gradient Catastrophe Generating Solitons

被引：130

作者：

Conti, Claudio ^{[1
]}

Fratalocchi, Andrea ^{[1
,2
]}

Peccianti, Marco ^{[1
,2
]}

Ruocco, Giancarlo ^{[1
,3
]}

Trillo, Stefano ^{[1
,4
]}

机构：

[1] Univ Roma La Sapienza, INFM, CNR, Res Ctr SOFT, I-00185 Rome, Italy

[2] Ctr Studi & Ric Enrico Fermi, I-00184 Rome, Italy

[3] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[4] Univ Ferrara, Dipartimento Ingn, I-44100 Ferrara, Italy

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 08期

基金：

芬兰科学院; 欧洲研究理事会;

关键词：

DARK OPTICAL SOLITONS; SPATIAL SOLITONS; SHOCK-WAVES; DISPERSIVE FIBERS; NONLINEAR MEDIA; PULSES; PROPAGATION;

D O I：

10.1103/PhysRevLett.102.083902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the propagation of a dark beam in a defocusing medium in the strong nonlinear regime. We observe for the first time a shock fan filled with noninteracting one-dimensional gray solitons that emanates from a gradient catastrophe developing around a null of the optical intensity. This scenario turns out to be very robust, persisting also when the material nonlocal response averages the nonlinearity over dimensions much larger than the emerging soliton filaments.

引用

页数：4

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