Accession Number:

ADA282781

Title:

New Mechanisms and New Materials for Organic Optical Nonlinearity

Descriptive Note:

Annual rept. 2 Jun 1993-1 Jun 1994

Corporate Author:

ARIZONA UNIV TUCSON OPTICAL SCIENCES CENTER

Report Date:

1994-06-01

Pagination or Media Count:

13.0

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 guesthost polymer composite based on the photoconducting polymer polyN-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

Subject Categories:

  • Electrooptical and Optoelectronic Devices
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE