Intensity-Dependence Absorption and Photorefractive Effects in Barium Titanate

Abstract

We present experimental data for BaTiO3 that exhibit an intensity dependence in the absorption coefficient and the two-beam coupling coefficient at intensities between 0.002 and 40 S/sq. cm. The effective empty-trap concentration was found to increase with intensity. We present a model, in the spirt of commonly used (photorefractive) theories, for photorefraction and optical absorption that explains these effects. The intensity dependence was attributed to the presence of secondary photorefractive centers.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1988
Accession Number
ADA200652

Entities

People

  • G. A. Brost
  • J. R. Rotge
  • R. A. Motes

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Absorption Cross Sections
  • Air Force
  • Barium
  • Barium Titanates
  • Charge Carriers
  • Classification
  • Electrons
  • Energy Bands
  • Energy Levels
  • Experimental Data
  • Lasers
  • Materials
  • Optical Absorption
  • Optics
  • Refractive Index
  • Titanates

Fields of Study

  • Physics

Readers

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