Interference of transverse rings in multifilamentation of powerful femtosecond laser pulses in air

被引：82

作者：

Chin, SL

Petit, S

Liu, W

Iwasaki, A

Nadeau, MC

Kandidov, VP

Kosareva, OG ^{[1
]}

Andrianov, KY

机构：

[1] Moscow MV Lomonosov State Univ, Ctr Int Laser, Dept Phys, Moscow 119899, Russia

[2] Univ Laval, Ctr Opt Photon & Laser, Quebec City, PQ G1K 7P4, Canada

[3] Univ Laval, Dept Phys Genie Phys & Opt, Quebec City, PQ G1K 7P4, Canada

来源：

OPTICS COMMUNICATIONS | 2002年 / 210卷 / 3-6期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

interference; multiple filamentation; self-focusing; photoionization;

D O I：

10.1016/S0030-4018(02)01808-4

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We observe multiple filaments and interference of their ring structures in the propagation of 14 mJ, 45 fs infrared laser pulse in air. We suggest a simple physical model describing the formation and the interference of rings as the result of superposition of the background field of the whole beam and the fields that diverge from the filaments due to the defocusing in the laser-produced plasma. The size and the number of maxima in the interference pattern depend on the position of the filament formation along the direction of propagation. The simulated picture of the ring structure interference is in qualitative agreement with the one obtained from the experiment. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：329 / 341

页数：13

共 30 条

[1] Intensity clamping and re-focusing of intense femtosecond laser pulses in nitrogen molecular gas [J].