Synchrotron X-Ray Diffraction Analysis of Photorefractive Crystals and their Gratings

Abstract

High-resolution synchrotron x-ray diffraction imaging was used to examine the state of crystal perfection in the photorefractive ferroelectric materials barium titanate and strontium barium niobate. Ferroelectric 180 degree domains, dislocations, striations, faceted growth remnants, and other lattice features were identified. The technique was also used to image the photorefractive space charge field profile in-situ. Measurements of the field were compared with numerical simulations of the standard model of the photorefractive effect, and simulations of the x-ray image formation process.

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Document Details

Document Type
Technical Report
Publication Date
Jul 26, 1993
Accession Number
ADA271176

Entities

People

  • Gerard Fogarty
  • Mark Cronin-golomb

Organizations

  • Tufts University

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical

DTIC Thesaurus Topics

  • Barium Titanates
  • Bragg Angle
  • Diffraction
  • Dislocations
  • Distortion
  • Electric Fields
  • Ferroelectric Domains
  • Films
  • Geometry
  • High Resolution
  • Light Sources
  • Materials
  • Simulations
  • Space Charge
  • Standards
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.

Technology Areas

  • Space