New Phenomena in Dye-Doped Liquid Crystals: Black Hole Effect and Switchable Reversed Diffraction (Postprint)

Abstract

A nonlinear extinction of transmitted light is observed in liquid crystal cells with large concentrations of anthraquinone dye. Two distinct mechanisms are responsible for this effect when exposed to low and high intensity light, respectively. At low intensities, critical opalescence, micro-scatter, and an increase in linear absorption occur; whereas high intensities result in scattering from photo-induced micro-bubbles.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2006
Accession Number
ADA475113

Entities

People

  • David Evans
  • G. Cook
  • J. L. Carns
  • M. A. Saleh
  • N . Tabiryan
  • S. Serak

Organizations

  • Air Force Research Laboratory

Tags

DTIC Thesaurus Topics

  • Absorption
  • Air Force
  • Air Force Facilities
  • Air Force Research Laboratories
  • Black Holes
  • Crystals
  • Diffraction
  • Engineering
  • Extinction
  • Intensity
  • Light Scattering
  • Liquid Crystals
  • Materials
  • Military Research
  • Quinones
  • Scattering

Fields of Study

  • Physics

Readers

  • Chemistry (specifically Chemical Fluorescence)
  • Materials Science and Engineering.