Self and forced periodic arrangement of multiple filaments in glass

被引：27

作者：

Berube, Jean-Philippe ^{[1
,2
]}

Vallee, Real ^{[1
,2
]}

Bernier, Martin ^{[1
,2
]}

Kosareva, Olga ^{[3
]}

Panov, Nikolay ^{[3
]}

Kandidov, Valery ^{[3
]}

Chin, See Leang ^{[1
,2
]}

机构：

[1] Univ Laval, Ctr Opt Photon & Laser, Quebec City, PQ G1V 0A6, Canada

[2] Univ Laval, Dept Phys Genie Phys & Opt, Quebec City, PQ G1V 0A6, Canada

[3] Moscow MV Lomonosov State Univ, Dept Phys, Ctr Int Laser, Moscow 119992, Russia

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

FEMTOSECOND LASER-PULSE; FUSED-SILICA; WAVE-GUIDES; AIR; COMPRESSION; PROPAGATION; GENERATION; MEDIA;

D O I：

10.1364/OE.18.001801

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The formation of permanent periodic structural changes in fused silica induced by the multifilamentation process was investigated. A cylindrical lens was used to focus 800 nm 50 fs pulses with 0.5 -3mJ energy down to a line, resulting in a quasi-periodic linear self-arrangement of multiple filaments (MF). The quasi-period of multiple filaments is shown to be uniquely defined by the critical power of the material and the peak intensity on the sample entrance surface. A novel technique to control this spatial self-arrangement of MF is demonstrated based on the use of a binary phase mask. This technique allowed us to decrease the relative variation of spacing between the adjacent tracks of refractive index modifications by a factor of 4 as compared with the case without the phase mask. 3D + time numerical simulations qualitatively reproduce the main features of multiple filament formation obtained in the experiment. (C) 2009 Optical Society of America

引用

页码：1801 / 1819

页数：19

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