Spontaneously generated X-shaped light bullets

被引：196

作者：

Di Trapani, P

Valiulis, G

Piskarskas, A

Jedrkiewicz, O

Trull, J

Conti, C

Trillo, S

机构：

[1] Univ Insubria, INFM, I-22100 Como, Italy

[2] Univ Insubria, Dept Chem Phys & Math Sci, I-22100 Como, Italy

[3] Vilnius State Univ, Dept Quantum Elect, LT-2040 Vilnius, Lithuania

[4] INFM, I-00146 Rome, Italy

[5] Univ Ferrara, Dept Engn, I-44100 Ferrara, Italy

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.91.093904

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We observe the formation of an intense optical wave packet fully localized in all dimensions, i.e., both longitudinally (in time) and in the transverse plane, with an extension of a few tens of fsec and microns, respectively. Our measurements show that the self-trapped wave is an X-shaped light bullet spontaneously generated from a standard laser wave packet via the nonlinear material response (i.e., second-harmonic generation), which extend the soliton concept to a new realm, where the main hump coexists with conical tails which reflect the symmetry of linear dispersion relationship.

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页数：4

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