Electrical control of shape of laser beam using axially symmetric liquid crystal cells

Shih Wei Ko, Tsung Hsien Lin, Yao Han Huang, Hung Chang Jau, Shu-Chun Chu, Yan Yu Chen, Andy Y.G. Fuh

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This work demonstrates the electrical tuning of laser beam shape using an axially symmetric dye-dope liquid crystal (ASDDLC) device that is fabricated using a photo-alignment method. Various beam shapes can be obtained by linearly polarized Gaussian laser beams through an ASDDLC device under various applied voltages. The far-field intensity patterns generated by laser beams of selected shapes under various applied voltages are simulated, and the results are consistent with experiment. A rotatable petalshaped beam is obtained by controlling the polarization of the output donut-shaped beam. The tenability of beam shape of light with a wavelength of 1064 nm, which is commonly used in biomedical applications, is also demonstrated.

Original languageEnglish
Pages (from-to)1540-1545
Number of pages6
JournalApplied Optics
Volume51
Issue number10
DOIs
Publication statusPublished - 2012 Apr 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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    Ko, S. W., Lin, T. H., Huang, Y. H., Jau, H. C., Chu, S-C., Chen, Y. Y., & Fuh, A. Y. G. (2012). Electrical control of shape of laser beam using axially symmetric liquid crystal cells. Applied Optics, 51(10), 1540-1545. https://doi.org/10.1364/AO.51.001540