Resonant two-wave mixing in photorefractive materials with the aid of dc and ac fields

V.A. Kalinin, K. Shcherbin, L. Solymar, J. Takacs, David J. Webb

Research output: Contribution to journalArticle

Abstract

A recently predicted resonant effect for the enhancement of two-wave mixing in photorefractive materials is investigated. The resonance occurs when the frequency of the applied ac field agrees with the eigenfrequency of the excited space-charge wave. Experimentally a clear resonance is found, as predicted by the theory, for high dc electric fields, but the resonance is smeared out for lower fields. A modified theory, taking into account the second temporal harmonic of the space-charge wave, shows good agreement with the experimental results.
Original languageEnglish
Pages (from-to)1852-1854
Number of pages3
JournalOptics Letters
Volume22
Issue number24
DOIs
Publication statusPublished - 1997

Bibliographical note

© 1997 Optical Society of America

Keywords

  • predicted resonant effect
  • enhancement
  • two-wave mixing
  • photorefractive materials
  • resonance
  • frequency
  • ac field
  • eigenfrequency
  • excited space-charge wave
  • dc electric fields
  • second temporal harmonic
  • space-charge wave

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