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Measurement of the Excited-State Molecular Polarizability of C60

Published online by Cambridge University Press:  15 February 2011

R. W. Hellwarth
Affiliation:
Department of Physics and Electrical Engineering, University of Southern California, Los Angeles, CA 90089-0484
J. P. Partanen
Affiliation:
Department of Physics and Electrical Engineering, University of Southern California, Los Angeles, CA 90089-0484
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Abstract

We use ∼30 ps pulses at 532 nm to measure the complex excited-state molecular polarizability αe in a C60/benzene solution. We determine the imaginary part of αe by measuring the excited-state absorption cross-section in a pump-probe experiment. In a degenerate-four-wave-mixing (DFWM) experiment, we find that in delayed probing of the complex index gratings formed by ∼30 ps pulses, the thermal and the excited-state polarizability changes both contribute to these transient gratings.

Type
Research Article
Copyright
Copyright © Materials Research Society 1995

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References

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