Electrically switchable and thermally erasable biphotonic holographic gratings in dye-doped liquid crystal films

C. R. Lee, T. S. Mo, K. T. Cheng, T. L. Fu, A. Y.G. Fuh

Research output: Contribution to journalArticlepeer-review

59 Scopus citations

Abstract

High-resolution laser-induced BGs based on azo-dye-doped liquid crystal (LC) films were developed and studied. The biphotonic gratings (BGs) were created by the irradiation of a red interference field written by two linearly polarized lights and one linearly polarized green light. A separate experiment verified that the BGs are formed by two mechanisms: first, the green-light-induced adsorption effect via trans-cis isomerization, and second, the inhibition effect of dye adsorption induced by the red light through the cis-trans inverse isomerization. In addition, the BGs were found to have two significant properties: electrical switching and thermal erasability.

Original languageEnglish
Pages (from-to)4285-4287
Number of pages3
JournalApplied Physics Letters
Volume83
Issue number21
DOIs
StatePublished - 24 Nov 2003

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