New Mechanisms and New Materials for Organic Optical Nonlinearity

Abstract

In order to be photorefractive, a material has to combine photogeneration, photoconductivity, trapping and electro-optic (EO) properties. For our work we have developed a guest/host polymer composite based on the photoconducting polymer poly(N-vinylcarbazole) (PVK). Photosensitivity in the visible was provided by the charge transfer (CT) complex that PVK forms with 2, 4,7-trinitro-9-fluorenone (TNF). The azo dye 2,5-dimethyl-4-(p-nitrophenylazo) anisole (DMNPAA) was used as the EO active chromophore. We added N- ethylcarbazole (ECZ) as an additional plasticizer to further decrease the glass transition temperature of the material. This guarantees good alignment of the nonlinear optical chromophores in an externally applied electric fields, necessary to obtain a macroscopic EO effect in the material

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1994
Accession Number
ADA282781

Entities

People

  • N. Peyghambarian
  • Neal R. Armstrong
  • S. Mazumdar

Organizations

  • University of Arizona

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Bandwidth
  • Energy Bands
  • Films
  • Glass Transition Temperature
  • High Energy
  • Materials
  • Molecules
  • Optical Properties
  • Organic Compounds
  • Organic Materials
  • Picosecond Time
  • Polymer Matrix Composites
  • Polymers
  • Spectra
  • Thin Films
  • Transition Temperature

Readers

  • Materials Science and Engineering.