NEW NONLINEAR SOL-GEL FILMS EXHIBITING PHOTOREFRACTIVITY

Authors
CHAPUT F RIEHL D BOILOT JP CARGNELLI K CANVA M LEVY Y BRUN A
Citation
F. Chaput et al., NEW NONLINEAR SOL-GEL FILMS EXHIBITING PHOTOREFRACTIVITY, Chemistry of materials, 8(2), 1996, pp. 312
Citations number
20
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
Chemistry of materials → ACNP
ISSN journal
08974756
Volume
8
Issue
2
Year of publication
1996
Database
ISI
SICI code
0897-4756(1996)8:2<312:NNSFEP>2.0.ZU;2-U
Abstract
The first photorefractive sol-gel film has been prepared by copolymeri zation of tetraethoxysilane and modified silane monomers having push-p ull azobenzene and carbazole moieties. Thin films poled by corona disc harge exhibited large quadratic nonlinearities (electrooptic coefficie nt r(33) approximate to 17 pm/V, at 633 nm). Preliminary two-beam coup ling measurements, without applying external electric field, showed ph otorefractivy of this new sol-gel material.