Gas-induced solitons

被引：71

作者：

Bergé, L ^{[1
]}

Couairon, A ^{[1
]}

机构：

[1] CEA, Dept Phys Theor & Appl, F-91680 Bruyeres Le Chatel, France

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.86.1003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The self-guiding of femtosecond laser pulses in air is investigated. For powers close to the threshold for self-focusing, we show that the balance between the nonlinear focusing of the beam and its defocusing by multiphoton sources produces a new kind of solitonlike structure. Over considerably long distances, the radial profile of the pulse relaxes to a steady-state shape, whereas its temporal profile shrinks along propagation. The influence of the normal group-velocity dispersion is finally discussed.

引用

页码：1003 / 1006

页数：4

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