Dynamics of biphotonic intensity holographic gratings based on dye-doped liquid crystal films

Ko Ting Cheng, Chia Rong Lee, Andy Ying Guey Fuh

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The dynamics of biphotonic intensity holographic gratings (BIHGs) based on dye-doped liquid crystal (DDLC) films, including optical and thermal effects, are studied. Experimental results indicate that the formation of a BIHG involves bulk reorientation and surface adsorption. The former yields a transient biphotonic grating; the latter results in a persistent biphotonic grating. Additionally, the dynamic behaviours of the biphotonic diffraction signals are different from those of a conventional one-photonic diffraction signal, and depend on the intensity(polarization) of the green(red) pump-beam. The effect of ambient temperature on the diffraction efficiency of a BIHG is also studied: a higher ambient temperature prevents more dye molecules from being adsorbed on the substrate.

Original languageEnglish
Pages (from-to)95-100
Number of pages6
JournalLiquid Crystals
Volume34
Issue number1
DOIs
Publication statusPublished - 2007 Jan 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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