Real-time spatial frequency filtering for gratings formed via two-wave mixing in photorefractive crystals

Shoang C. Donn, K. C. Huang, Y. C. Huang, Y. L. Juh, Ching Cherng Sun

Research output: Contribution to journalConference articlepeer-review

Abstract

In almost all cases, vibration will nullify photorefractive induced effects and thus provide no benefit for us. This paper shows that we can make use of vibration to eliminate the effect of one grating and retain the effect of the remaining gratings in a multiple grating environment, such as those created via multiple two-wave mixing. If the two grating periods are different, this type of elimination is equivalent to spatial frequency filtering. We report here the first results on real-time spatial frequency filtering for the gratings formed via two-wave mixing within photorefractive crystals.

Original languageEnglish
Pages (from-to)87-94
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3137
DOIs
StatePublished - 1997
EventPhotorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications III - San Diego, CA, United States
Duration: 28 Jul 199728 Jul 1997

Keywords

  • Photorefraction
  • Spatial frequency filtering
  • Vibration

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