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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 26 — Dec. 21, 2009
  • pp: 23729–23735

Utilizing critical angles in sensing partially ordered liquid crystal profile

Alaeddin S. Abu-Abed and Robert G. Lindquist  »View Author Affiliations

Optics Express, Vol. 17, Issue 26, pp. 23729-23735 (2009)

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This paper investigates a new approach for tracking nematic uniaxial liquid crystal (LC) profile in partially ordered LC based sensors. This approach utilizes measuring critical angles for total internal reflection (TIR) at the interface of optically isotropic and partially ordered LC film. The proposed optical transduction requires measuring of the ordinary critical angle and two extraordinary critical angles in orthogonal directions to report the LC degree of ordering and the director axis orientation.

© 2009 Optical Society of America

OCIS Codes
(130.6010) Integrated optics : Sensors
(160.3710) Materials : Liquid crystals
(230.3720) Optical devices : Liquid-crystal devices
(260.1440) Physical optics : Birefringence

ToC Category:
Optical Devices

Original Manuscript: August 31, 2009
Revised Manuscript: November 3, 2009
Manuscript Accepted: November 5, 2009
Published: December 11, 2009

Alaeddin S. Abu-Abed and Robert G. Lindquist, "Utilizing critical angles in sensing partially ordered liquid crystal profile," Opt. Express 17, 23729-23735 (2009)

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