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High-diffraction-efficiency holographic gratings in C60-doped nematics

  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Holographic gratings were recorded in C60-doped nematic liquid crystals (NLCs) by two-beam coupling. The asymmetric energy transfer dependence on the polarity of the applied voltage and multiple diffractions in two-beam coupling indicated that the gratings were photorefractive and worked in the Raman-Nath regime. The diffraction efficiencies (DEs) of the main diffraction orders were investigated at different applied voltages. The diffractive intensity distribution was asymmetric, and a first-order DE as high as 66% (as high as 84% excluding the influence of the scattering) was obtained from the 20 μm thick C60-doped NLC film.

Original languageEnglish
Pages (from-to)6506-6510
Number of pages5
JournalApplied Optics
Volume48
Issue number33
DOIs
StatePublished - 20 Nov 2009

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