Modulation of shape and polarization of beam using a liquid crystal q-plate that is fabricated via photo-alignment

Yao Han Huang, Shih Wei Ko, Ming Shian Li, Shu Chun Chu, Andy Y.G. Fuh

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A liquid crystal (LC) device, called a "q-plate" (QP), which is based on axially symmetric photo-alignment was investigated. The electrically tunable LC QP device could be modulated to control the shape and polarization of a linearly polarized Gaussian laser beam that propagated through it. The intensity profile and polarization distribution were simulated by MATLAB and 1D-DIMOS. The results of the simulation were consistent with experimental findings. In the fabricated electrically tunable LC QP device, switching between different beam-profile configurations can be realized by applying a voltage. Moreover, the fabrication of an LC QP is relatively simple, and the device has potential for such practical applications as beam shape modulators and spatial polarization converters use in diffractive optics and imaging systems.

Original languageEnglish
Pages (from-to)10954-10961
Number of pages8
JournalOptics Express
Volume21
Issue number9
DOIs
Publication statusPublished - 2013 May 6

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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