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Nanoscale interlayer that raises response rate in photorefractive liquid crystal polymer composites.

Authors
  • Zhao, Hua1
  • Lian, Chao
  • Sun, Xiudong
  • Zhang, Jingwen W
  • 1 Department of Physics, Harbin Institute of Technology, Harbin, 150001, China. , (China)
Type
Published Article
Journal
Optics Express
Publisher
The Optical Society
Publication Date
Jun 20, 2011
Volume
19
Issue
13
Pages
12496–12502
Identifiers
DOI: 10.1364/OE.19.012496
PMID: 21716489
Source
Medline
License
Unknown

Abstract

By depositing a nanoscale photoconductive layer on a stable photorefractive (PR) polymeric film, consisting of the polymer poly[N-vinylcarbazole] (PVK) doped with 4,4'-n-pentylcyanobiphenyl (5CB) and C60, both the response rate and beam coupling properties were improved greatly. Systematic measurements and observations unveiled the role played by the additive layer in preventing ion injection from the ITO layer into the PR film and hence in mitigating the charge compensation. A strong fanning effect and high diffraction orders at small angles have demonstrated the excellent PR property in the modified samples used. To demonstrate great potential of the PR composite in the updatable applications, real time double exposure interferometry was performed accordingly with good results.

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