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Separation of Electronic and Nuclear Contributions to the Third-Order Nonlinear Optical Susceptibilities of New Tetrathiafulvalene Derivatives Using Degenerate Four Wave Mixing

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Sahraoui B., Nguyen Phu X., Sallé M., Gorgues A.

We separate the electronic and nuclear contributions to the third-order nonlinear optical susceptibilities χ_{ijkl}^{〈3〉} using degenerate four wave mixing. This method allows to know the physical origin of the optical nonlinearities of new soluble tetrathiafulvalene derivatives and deduce the values of the second-order hyperpolarisabilities γ. The values of γ for the studied compounds are about 10^{5} greater than for CS_{2}.

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1 Acta Physica Polonica A

1 1999

1 Gorgues A.

1 Nguyen Phu X.

1 Sahraoui B.

1 Sallé M.

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Separation of Electronic and Nuclear Contributions to the Third-Order Nonlinear Optical Susceptibilities of New Tetrathiafulvalene Derivatives Using Degenerate Four Wave Mixing