Accession Number:

ADA231339

Title:

Observation of the Photorefractive Effect in a Polymer

Descriptive Note:

Interim technical rept.

Corporate Author:

IBM ALMADEN RESEARCH CENTER SAN JOSE CA

Report Date:

1990-12-10

Pagination or Media Count:

18.0

Abstract:

We report the observation of the photorefractive effect in an amorphous electro-optic material, the nonlinear polymer bisphenol A diglycidyl ether 4-nitro-1,2,phenylenediamine bisA-NPDA make photoconductive by doping with the hole transport agent diethylaminobenzaldehyde-diphenyl hydrazone DEH. The gratings formed exhibit dynamic writing and erasure, strong electric field dependence, polarization anisotropy, diffraction efficiencies up to 6 x 10 -5 in a 356 micron film, and large estimated photorefractive space-charge fields. Continuous realignment of the nonlinear molecules in the polymer permits external control of the grating readout independent of the space charge field formed.

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE