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Proceedings Paper

Nonlinear Optical Interactions In Langmuir-Blodgett Organic Semiconductor Heterostructures
Author(s): P. N. Prasad; M. K. Casstevens; J. Pfleger; P. Logsdon
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Paper Abstract

Monolayer and multilayer Langmuir-Blodgett films of two systems: (i) polyalkylthiophene and (ii) tetrakis cumylphenoxy phthalocyanines in pure form and mixed phase with octadecanol were prepared. We report here the first observation of a degenerate four wave mixing signal from a monolayer Langmuir-Blodgett film that of phthalocyanine, due to a large resonant third order optical nonlinearity, x(3) . The effective x(3) behaviors of both phthalocyanine and polythiophene Langmuir-Blodgett films were investigated by time-resolved femtosecond degenerate four wave mixing. The polythiophene Langmuir-Blodgett film when doped with iodine was found to be highly conductive. We have also observed a dramatic reduction of the nonlinear reflectivity as a consequence of iodine doping of polythiophene Langmuir-Blodgett films.

Paper Details

Date Published: 3 May 1988
PDF: 7 pages
Proc. SPIE 0878, Multifunctional Materials, (3 May 1988); doi: 10.1117/12.943963
Show Author Affiliations
P. N. Prasad, State University of New York at Buffalo (United States)
M. K. Casstevens, State University of New York at Buffalo (United States)
J. Pfleger, State University of New York at Buffalo (United States)
P. Logsdon, State University of New York at Buffalo (United States)

Published in SPIE Proceedings Vol. 0878:
Multifunctional Materials
Robert L. Gunshor, Editor(s)

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