Large third-order nonlinear optical properties of C70 fullerene in the infrared regime |
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Authors: | Shao-Chen Yang Qihuang Gong Zongju Xia Y H Zou Y Q Wu D Qiang Y L Sun Z N Gu |
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Institution: | (1) Department of Physics, Peking University, 100871 Beijing, P.R. China;(2) Department of Chemistry, Peking University, 100871 Beijing, P.R. China |
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Abstract: | The nonlinear third-order optical susceptibility of C70 in a toluene solution is measured for the first time by the method of degenerate four-wave mixing using 10 ns laser pulses at 1.06 m. The third-order susceptibility X
in
(3)
is 5.6×10–12 esu for a C70 toluene solution at a concentration of 0.476 g/l. The correspondent magnitude of the hyperpolarizability 1111 of the C70 molecule is 1.2×10–30 esu which is in a good agreement with the prediction given by the model of a free electron in a spherical box. |
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Keywords: | 42 65 Hw 36 90 +f 42 65 Ma |
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