Photorefractivity in Doped Nonlinear Organic Polymers
Abstract
This paper describes the properties of a new class of materials exhibiting the photorefractive effect, doped nonlinear organic polymers. Photorefraction (at 647.1 nm) was established by a combination of hologram erasability, correlation with photoconductivity and electro-optic response, and enhancement by external fields in numerous samples of two nonlinear epoxy materials doped with hole transport agents based on p-diethylaminobenzaldehyde- diphenyl hydrazone (DEH). Diffraction efficiencies up to 0.1% were observed at bias fields near 100 kV/cm. A useful property of these materials is that poling of the nonlinear chromophores is partially reversible, permitting partial control of the grating readout independent of the space-charge field formed. The polarization anisotropy of grating readout is consistent with the photorefractive mechanism.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 07, 1991
- Accession Number
- ADA243751
Entities
People
- C. Walsh
- D. M. Burland
- J. C. Scott
- S. Ducharme
- W. E. Moerner
Organizations
- International Business Machines Corporation (Armonk, NY)