Plasma channels in a filament of a femtosecond laser pulse focused by an axicon

被引：11

作者：

Chekalin, S. V. ^{[1
]}

Dokukina, A. E. ^{[2
]}

Smetanina, E. O. ^{[2
]}

Kompanets, V. O. ^{[1
]}

Kandidov, V. P. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Spect, Troitsk 142190, Russia

[2] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119991, Russia

来源：

QUANTUM ELECTRONICS | 2014年 / 44卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

filamentation; femtosecond pulses; anomalous dispersion; plasma channels; light bullets; ANOMALOUS-DISPERSION; AIR; GENERATION;

D O I：

10.1070/QE2014v044n06ABEH015452

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report the results of experimental and numerical investigation of the influence of the wavefront curvature of femto-second light focused by an axicon on the length and position of plasma channels in the filament under conditions of normal and anomalous group velocity dispersion in fused silica. It is shown that a change in the wavefront curvature by a value much greater than the longitudinal dimensions of the filament noticeably changes the geometry of the plasma channel position. The role of axicon focusing for ordering multiple filamentation is studied experimentally.

引用

页码：570 / 576

页数：7

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