Anisotropy of Nonlinear Coupling of Two Counter-Propagating Waves in Photorefractive Fe:KNbO3 (Postprint)

Abstract

The dependence of self-pumped photorefractive two-beam coupling in Fe:KNbO3 with crystal angle has been measured at 532 nm for the a-c and b-c crystal planes using a combination of oil immersion and relay imaging. A significant deviation between existing theory and experiment is found for large crystal angles. We propose this is due to a highly anisotropic effective charge trap density in Fe:KNbO3 of almost two orders of magnitude variation with crystal angle in the a-c plane.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2006
Accession Number
ADA462416

Entities

People

  • David Evans
  • G. Cook
  • J. L. Carns
  • M. A. Saleh

Organizations

  • Universal Technology Corporation (United States)

Tags

Communities of Interest

  • Air Platforms
  • Sensors

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Air Force
  • Air Force Research Laboratories
  • Anisotropy
  • Coefficients
  • Couplings
  • Diffusion
  • Electrons
  • Government Procurement
  • Governments
  • Light Sources
  • Materials
  • Military Research
  • Phase Shift
  • Piezoceramics
  • Space Charge
  • Steady State

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Plasma Physics.
  • Spectroscopy.