Open AccessGeneration of vector beams in terms of the partial light modulator of a twisted nematic liquid crystal
Author(s) -
Sixing Xi,
Xiaolei Wang,
Shuai Huang,
Shengjiang Chang,
Lin Lie
Publication year - 2015
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.64.114204
Subject(s) - spatial light modulator , optics , liquid crystal , optical tweezers , polarization (electrochemistry) , physics , laser , beam (structure) , optical modulator , light beam , materials science , phase modulation , chemistry , phase noise
We propose a vector beam generation method based on the spatial light modulator composed of twisted nematic liquid crystal. According to the relation between the rotation angle and the applied voltage on the spatial light modulator, a common optical system for generating a variety of vector beams is designed in experiments. By using this common optical system, a variety of vector beams in axisymmetric phases as well as the complex vector beams are generated, and their polarization characteristics are observed and measured experimentally, where a tight focusing field is obtained, and this may be applied in optical tweezers and lithography. In addition, the device structure is simple and easy to operate, its efficiency of producing vector beam is very high and the laser spectral characteristics are not changed in the proposed generation of vector beams. Therefore, the method we proposed can find important potential applications in strong laser of vector beams interacting with matter, and laser acceleration, etc.