Photorefractivity and storage holographic gratings in dye- And fullerene-doped nematic liquid crystal film

I. C. Khoo, H. Li, Y. Liang, K. Wang

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

In this paper, we will describe the basic mechanisms and dynamics of photorefractivity, and holographic grating formations in dye- and fullerene C60-doped nematic liquid crystal films. The effects are attributed to photo induced molecular axis reorientation in these nematic films. A nonlinear index coefficient n2 of 10-2 cm2/Watt can be obtained in a 25μm thick film, with an applied dc-voltage of -1 volt. In Fullerene C60-doped films, these laser induced gratings can be made permanent and electronically modulated; they can be turned off and on by an ac voltage with response times of ∼ 100 μs and a few ms, respectively.

Original languageEnglish (US)
Pages (from-to)2-13
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume2529
DOIs
StatePublished - Aug 18 1995
EventPhotorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications 1995 - San Diego, United States
Duration: Jul 9 1995Jul 14 1995

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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