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 journalArticlepeer-review

9 Citations (Scopus)


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
Issue number10
Publication statusPublished - 2012 Apr 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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