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Proceedings Paper

Nonlinear Optics Of Liquid Crystals: Collective Reorientation Effects
Author(s): Peter Palffy-Muhoray
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Paper Abstract

The largest contribution to the nonlinear susceptibility of liquid crystalline materials arises from the effects of optical fields on orientational order. One mechanism of fundamental importance is the collective reorientation of the molecules by the radiation field which couples to the orientation via the polarizability anisotropy. The reorienting torque of the optical field is in general opposed by surface and elastic torques, and hence the response of the system depends on the sample geometry and surface anchoring effects. We consider the details of the interaction between the radiation field and the liquid crystalline medium and examine the nature of optical field induced elastic deformations. These reorientation effects can give rise to technologically important phenomena such as optical bistability and optical field induced scattering. We compare the predictions of theory with the results of recent experiments on homogeneous liquid crystals and on composite polymer dispersed liquid crystal (PDLC) films.

Paper Details

Date Published: 25 July 1989
PDF: 10 pages
Proc. SPIE 1080, Liquid Crystal Chemistry, Physics, and Applications, (25 July 1989); doi: 10.1117/12.976405
Show Author Affiliations
Peter Palffy-Muhoray, Kent State University (United States)

Published in SPIE Proceedings Vol. 1080:
Liquid Crystal Chemistry, Physics, and Applications
J. William Doane; Zvi Yaniv, Editor(s)

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