Type

Journal Article

Authors

Werner Blau

Subjects

Physics

Topics
physics optical degenerate four wave mixing size infrared c60 nonlinear response conjugated polymers

Large infrared nonlinear optical response of C60. (1991)

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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Full list of authors on original publication

Werner Blau

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Werner Blau
Trinity College Dublin
Total Publications: 109