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Proceedings Paper

Electro-Optic Properties Of Ferroelectric Polymers
Author(s): V. Dentan; Y. Levy; M. Dumont; P. Robin; E. Chastaing; J. P. Montheard
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Paper Abstract

Ferroelectric polymers are well known for their piezoelectric and pyroelectric applications. We have investigated their electro-optic properties using the attenuated total reflection method. Two different polymers were studied. P(VDF-TrFe) is an highly crystalline ferroelectric polymer which presents a well defined Curie temperature (100°C) and which can be polarized at room temperature, while P(VDCN-VAc) is an amorphous polymer which exhibits only a glass transition at 170°C. The high polarization which can be obtained in this polymer led some authors to refer it as a ferroelectric glass. We have shown that the attenuated total reflection allowed us to measure the electro-optic coefficient together with the piezoelectric coefficient. Futhermore, it is possible to separate the primary electrooptic coefficient from the secondary one which is due to the variation of density induced by the piezoelectric effect. Inversed polarization gives electrooptic coefficient with opposite sign. Because of their inherent thermodynamic stability, these ferroelectric polymers are very suitable for applications and their electrooptic coefficient can be surely increased by doping with non-linear active molecules.

Paper Details

Date Published: 14 December 1989
PDF: 4 pages
Proc. SPIE 1126, Electro-Optic and Magneto-Optic Materials and Applications, (14 December 1989); doi: 10.1117/12.961371
Show Author Affiliations
V. Dentan, Centre Universitaire d'Orsay (France)
Y. Levy, Centre Universitaire d'Orsay (France)
M. Dumont, Centre Universitaire d'Orsay (France)
P. Robin, Thomson-CSF (France)
E. Chastaing, Thomson-CSF (France)
J. P. Montheard, Universite de Saint-Etienne (France)

Published in SPIE Proceedings Vol. 1126:
Electro-Optic and Magneto-Optic Materials and Applications
Jean-Paul Castera, Editor(s)

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