Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • International Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 1998),
  • paper QWF4

Thermodiffusive photorefractivity in liquid crystals

Not Accessible

Your library or personal account may give you access

Abstract

A breakthrough in the search for new photorefractive materials occurred with the prediction and discovery of photorefractive liquid crystals (LC).1,2 Photorefractive LC solve two key problems: first, the voltage necessary to apply to the photorefractive material for realization of wave mixing was reduced from kilovolts to volts and, second, the modulation of the refractive index of the material can be as large as 0.2. The difference between the diffusion constants D+ and D of photogenerated positive and negative ions is the reason for charge separation and space charge formation in photoconductive LC. The diffusive photorefractive field Ed readily saturates when the photoconductivity prevails against dark conductivity, and its amplitude can be evaluated as.

© 1998 Optical Society of America

PDF Article
More Like This
Efficient photorefractive polymer dispersed liquid crystals

B. Kippelen, A. Golemme, J.L. Madonado, and N. Peyghambarian
CMH5 Conference on Lasers and Electro-Optics (CLEO:S&I) 1998

Orientational phenomena in liquid crystals on photorefractive substrates

Nelson V. Tabiryan and Cesare Umeton
QThG3 International Quantum Electronics Conference (IQEC) 1998

Photorefractivity in polymer dispersed liquid crystals

B. Kippelen, A. Golemme, B. L. Volodin, and N. Peyghambarian
CThE6 Conference on Lasers and Electro-Optics (CLEO:S&I) 1997

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved