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Dense Xerogel Matrices and Films for Optical Memory

Published online by Cambridge University Press:  25 February 2011

F. Chaput ,
J. P. Boilot ,
F. Devreux ,
M. Canva ,
P. Georges  and
A. Brun
F. Chaput
Affiliation:
Groupe de Chimie du Solide, Laboratoire de Physique de la Matière Condensée, Ecole Polytechnique, 91128 Palaiseau (FRANCE)
J. P. Boilot
Affiliation:
Groupe de Chimie du Solide, Laboratoire de Physique de la Matière Condensée, Ecole Polytechnique, 91128 Palaiseau (FRANCE)
F. Devreux
Affiliation:
Groupe de Chimie du Solide, Laboratoire de Physique de la Matière Condensée, Ecole Polytechnique, 91128 Palaiseau (FRANCE)
M. Canva
Affiliation:
Institut d'Optique Théorique et Appliquée, Bat. 503, B.P. 147, 91403 Orsay (FRANCE)
P. Georges
Affiliation:
Institut d'Optique Théorique et Appliquée, Bat. 503, B.P. 147, 91403 Orsay (FRANCE)
A. Brun
Affiliation:
Institut d'Optique Théorique et Appliquée, Bat. 503, B.P. 147, 91403 Orsay (FRANCE)
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Abstract

Optically clear gels doped with organic molecules are prepared in the zirconia-silica system by hydrolysis of metal alkoxides in a wet atmosphere. After drying, dense xerogels are obtained which exhibit a closed porosity. By using the same route, organic-inorganic hybrid xerogels are also produced as films.

The molecule-matrix interactions are evaluated from the absorption recovery times of the S0→S1 transition for triphenylmethane dyes. Concerning doped xerogels with other organic molecules having polar groups, the application of the strong polarized electric field of an ultrashort optical pulse allows to locally create a birefringence with a memory effect. This type of sample could be used for optical storage and treatment of information.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 663
Copyright
Copyright © Materials Research Society 1992

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References

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