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Excited State Enhancement Mechanism for Nonresonant Nonlinear Optical Processes

Published online by Cambridge University Press:  25 February 2011

J. R. Heflem
Affiliation:
Department of Physics, University of Pennsylvania, Philadelphia, PA 19104
Q. L. Zhou
Affiliation:
Department of Physics, University of Pennsylvania, Philadelphia, PA 19104
D. C. Rodenberger
Affiliation:
Department of Physics, University of Pennsylvania, Philadelphia, PA 19104
Y. M. Cai
Affiliation:
Department of Physics, University of Pennsylvania, Philadelphia, PA 19104
A. F. Garito
Affiliation:
Department of Physics, University of Pennsylvania, Philadelphia, PA 19104
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Abstract

A general enhancement mechanism is discussed for nonlinear optical processes originating from real population of electronic excited states. Enhancement of greater than two orders of magnitude of nonresonant third harmonic generation from an optically pumped s1 electronic excited state is experimentally observed in a conjugated disc-like metallophthalocyanine.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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