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Third-Order Optical Nonlinearity in a Polymer Composite

Published online by Cambridge University Press:  21 February 2011

K. M. White ,
R. E. Harelstad ,
C. V. Francis ,
D. J. Gerbi ,
J. Stevens  and
P. C. Leung
K. M. White
Affiliation:
Science Research Laboratory, 3M Company, St. Paul, MN 55144
R. E. Harelstad
Affiliation:
Science Research Laboratory, 3M Company, St. Paul, MN 55144
C. V. Francis
Affiliation:
Science Research Laboratory, 3M Company, St. Paul, MN 55144
D. J. Gerbi
Affiliation:
Science Research Laboratory, 3M Company, St. Paul, MN 55144
J. Stevens
Affiliation:
Computational Science Center, 3M Company, St. Paul, MN 55144
P. C. Leung
Affiliation:
Computational Science Center, 3M Company, St. Paul, MN 55144
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Abstract

Third-order optical nonlinearity in organic materials has generally been sought from molecules and polymers having extended i-electron delocalization in conjugated bonding schemes. In an alternative approach, we have investigated the third-order optical response of a polymeric composite containing charge transfer complexes in which the nonlinearity originates from intermolecular electron delocalization between π-electron clouds in charge transfer stacks. The material, which is composed of a polymer having electrondonating pendant side groups that complex with dopant electron-acceptor molecules, has been processed into an optically clear thin film. Nonlinear characterization of the film by means of third-harmonic generation suggests enhancement of the third-order response arising from charge transfer interactions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 175: Symposium S – Multifunctional Materials , 1989 , 107
Copyright
Copyright © Materials Research Society 1990

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