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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 3, Iss. 1 — Jan. 29, 2008

Electrically switchable optical vortex generated by a computer-generated hologram recorded in polymer-dispersed liquid crystals

Y. J. Liu, X. W. Sun, Q. Wang, and D. Luo  »View Author Affiliations


Optics Express, Vol. 15, Issue 25, pp. 16645-16650 (2007)
http://dx.doi.org/10.1364/OE.15.016645


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Abstract

A computer-generated hologram designed to generate an optical vortex was recorded in a cell filled with polymer-dispersed liquid crystal material under a collimated Ar+laser beam operating at 514.5 nm. Owing to the photopolymerization-induced phase separation between the polymer and the liquid crystal, an index modulation was formed between the polymer-rich and liquid crystal-rich regions. A good optical vortex beam with high fidelity was reconstructed using a collimated He-Ne laser beam. The diffraction efficiency is estimated to be about 13%–17%. With a suitable voltage applied, the reconstructed optical vortex beam can be switched owing to the index change between the polymer and the liquid crystal.

© 2007 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(090.1760) Holography : Computer holography
(160.5470) Materials : Polymers
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Diffraction and Gratings

History
Original Manuscript: September 17, 2007
Revised Manuscript: November 12, 2007
Manuscript Accepted: November 15, 2007
Published: November 30, 2007

Virtual Issues
Vol. 3, Iss. 1 Virtual Journal for Biomedical Optics

Citation
Y. J. Liu, X. W. Sun, Q. Wang, and D. Luo, "Electrically switchable optical vortex generated by a computer-generated hologram recorded in polymer-dispersed liquid crystals," Opt. Express 15, 16645-16650 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-15-25-16645


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