Photorefractive Integrators and Correlators

Abstract

The use of photorefractive crystals as optically addressed time integrating spatial light modulators in acousto-optic signal processing applications was examined. Nonstationary recording techniques of alternating electric fields and moving fringe patterns were investigated in detail. A finite difference technique was used to model grating formation characteristics. Photorefractive Bi12SiO20 and BaTiO3 crystals were tested experimentally in an adaptive acousto-optic processor. These results demonstrated the feasibility of using photorefractives for such applications.... Photorefractive, Acousto-optic processor.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1992
Accession Number
ADA264200

Entities

People

  • George A. Brost

Organizations

  • Rome Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Acousto-Optic Modulators
  • Argon Lasers
  • Barium Titanates
  • Correlators
  • Differential Equations
  • Electric Fields
  • Electromagnetic Fields
  • Laser Beams
  • Lasers
  • Modulation
  • Modulators
  • Optical Correlators
  • Optical Modulators
  • Quantum Wells
  • Refractive Index
  • Semiconductors
  • Signal Processing

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Radar Systems Engineering.