Periodically Aligned Liquid Crystal: Potential Application for Projection Displays

Abstract

A nematic liquid crystal (NLC) layer with the anisotropy axis modulated at a fixed rate q in the transverse direction is considered. If the layer locally constitutes a half-wave plate, then the thin-screen approximation predicts 100% -efficient diffraction of normal incident wave. The possibility of implementing such a layer via anchoring at both surfaces of a cell with thickness L is studied as a function of parameter qL and threshold values of this parameter are found for a variety of cases. Distortions of the structure of director in comparison with the preferable ideal profile are found via numerical modeling. Freedericksz transition is studied for this configuration. Coupled-mode theory is applied to light propagation through such cell allowing to account for walk-off effects and effects of nematic distortion. In summary, this cell is suggested as a means for projection display, high efficiency is predicted.

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Document Details

Document Type
Technical Report
Publication Date
Aug 10, 2004
Accession Number
ADA428000

Entities

People

  • B. Park
  • B. Zeldovich
  • H. Sarkissian
  • N. Tabirian

Organizations

  • University of Central Florida

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplitude
  • Boundaries
  • Circular Polarization
  • Crystals
  • Dielectric Permittivity
  • Diffraction
  • Electric Fields
  • Equations
  • Liquid Crystal Displays
  • Liquid Crystals
  • Microelectromechanical Systems
  • Optics
  • Orientation (Direction)
  • Physical Properties
  • Polarization
  • Thickness
  • Waveplates

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Fluid Dynamics.
  • Materials Science and Engineering.