Multifunctional Macromolecules
Abstract
While numerous photorefractive polymers were synthesized by the incorporation of NLO chromophores and photoconductive components as side chains on a backbone, the most significant photorefractive behavior demonstration under this project was made in an electrooptic aminonitrostilbene methacrylate copolymer (P2ANS/MMA) without the addition of photoconductive compounds. By four wave mixing, photorefractive gratings were written in P2ANS/MMA using s-polarized and p-polarized writing beams and probed using orthogonally polarized probe beams. With probe beam orthogonally polarized to the write beams, well behaved, field dependent, stable responses ascribed to the photorefractive effect were observed. Diffraction efficiencies of 10(exp-4)-10(exp-5) were obtained in 8 micrometers thick films under an applied field of 50 V/micrometers with response times of 1.5 - 2 minutes. Increasing the sample thickness to 100 micrometers is projected to result in a diffraction efficiency of 1% - 3%.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1993
- Accession Number
- ADA277347
Entities
People
- A. J. East
- M. J. Sansone
- T. Findakly