Polarization-orthogonal filament array induced by birefringent crystals in air

被引：7

作者：

Li, Helong ^{[1
,2
]}

Zang, Hongwei ^{[1
]}

Huang, Qiulan ^{[1
]}

Liu, Chang ^{[1
]}

Su, Yue ^{[1
]}

Fu, Yao ^{[1
]}

Hou, Mengyao ^{[1
]}

Li, Aiwu ^{[1
]}

Chen, Hong ^{[2
]}

Chin, See-Leang ^{[3
,4
]}

Xu, Huailiang ^{[1
,5
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Jilin, Peoples R China

[2] Jilin Univ, State Key Lab Automot Simulat & Control, Campus NanLing, Changchun 130025, Jilin, Peoples R China

[3] Laval Univ, COPL, Quebec City, PQ G1V 0A6, Canada

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

[5] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

来源：

OPTICS EXPRESS | 2018年 / 26卷 / 07期

基金：

中国国家自然科学基金;

关键词：

FEMTOSECOND LASER-PULSES; STEP PHASE PLATE; MICROLENS ARRAY; POWER; SILICA; MEDIA;

D O I：

10.1364/OE.26.008515

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate the generation of filament array with orthogonal polarizations in air by using specifically designed wedge-type birefringent quartz plates. Experimental results show that the number of the generated filaments can be expressed as N = 2(n) where n is the number of quartz plates inserted in the laser propagation path. By manipulating the optic axis of the quartz plates with respect to the polarization direction of the input laser pulse, the generated filaments can be separated into two parts with the polarization directions perpendicular with each other. The separation distance between the adjacent filaments is found to be linearly dependent on the focal length of external focusing lens. Our results provide a simple and efficient way to generate regular and reproductive femtosecond filament array in air. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：8515 / 8521

页数：7

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