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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 25 — Dec. 10, 2007
  • pp: 17063–17071

Light depolarization effects during the Fréedericksz transition in nematic liquid crystals

Carlo Vena, Carlo Versace, Giuseppe Strangi, Stefano D’Elia, and Roberto Bartolino  »View Author Affiliations


Optics Express, Vol. 15, Issue 25, pp. 17063-17071 (2007)
http://dx.doi.org/10.1364/OE.15.017063


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Abstract

This work is aimed to the photopolarimetric characterization of the disorder evolution occurring in homeotropically aligned nematic liquid crystal films during the electrically induced Fréedericksz transition. The molecular director dynamics and the transversal reorientation modes are investigated by the analysis of the depolarization of the light beam emerging from the sample. Our measurements reveal unexpected depolarization effects at the transition, which we interpret in terms of director field unhomogeneity and defects creation.

© 2007 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(290.5855) Scattering : Scattering, polarization

ToC Category:
Materials

History
Original Manuscript: September 4, 2007
Revised Manuscript: October 23, 2007
Manuscript Accepted: November 1, 2007
Published: December 5, 2007

Citation
Carlo Vena, Carlo Versace, Giuseppe Strangi, Stefano D'Elia, and Roberto Bartolino, "Light depolarization effects during the Fréedericksz transition in nematic liquid crystals," Opt. Express 15, 17063-17071 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-25-17063


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