Large infrared nonlinear optical response of C60.
Citation:
Blau WJ, Byrne HJ, Cardin DJ, Dennis TJ, Hare JP, Kroto HW, Taylor R, Walton DR., Large infrared nonlinear optical response of C60., Physical Review Letters, 67, 11, 1991, 1423-1425.Download Item:
Abstract:
C60 buckminsterfullerene exhibits a large ultrafast third-order nonlinear optical response. Degenerate four-wave-mixing
measurements in C60-benzene solutions were
performed using
50-psec pulses at
l.064Itm.The magnitude of the nonlinear susceptibility per C60 molecule is
\y\=1.5x1O-42 m5 V-2 andof the same size as that observed in polydiacetylene. In contrast to conjugated polymers, however,a dominant positive real part of the nonlinearity is found,
3 times larger than the imaginary component.
The nonlinear response can be described within the model of a free electron in a
spherical box, confirming the complete
delocalization of electrons on the
C60 molecule
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Author: BLAU, WERNER
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Physical Review Letters;67;
11;
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