Creation of a hollow laser beam using self-phase modulation in a nematic liquid crystal

被引：39

作者：

Shevchenko, A

Buchter, SC

Tabiryan, NV

Kaivola, M

机构：

[1] Univ Helsinki, Dept Engn Phys & Math, FIN-02015 Helsinki, Finland

[2] BEAM Engn Adv Measurements Co, Winter Pk, FL 32789 USA

来源：

OPTICS COMMUNICATIONS | 2004年 / 232卷 / 1-6期

基金：

芬兰科学院;

关键词：

hollow laser beams; self-phase modulation; nematic liquid crystals;

D O I：

10.1016/j.optcom.2004.01.010

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a simple method to convert a Gaussian laser beam into an annular beam using a homeotropically oriented nematic liquid crystal. The method allows creation of a beam with sub-millimeter diameter and a width of a few tens of microns for a propagation distance of more than 10 mm. High spatial gradients in the radial intensity distribution make the beams promising for use in atom trapping and guiding. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：77 / 82

页数：6