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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

100%

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

vol. 95

issue 5

837-842

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}.

Photoinduced SHG in Push-Pull Chromophores 1,3-dithiol-2-yliedene Moieties Embedded in Photopolymer Matrices

76%

Migalska-Zalas A., Makowska-Janusik M., Kityk I., Sahraoui B., Salle M., Gorgues A.

Acta Physica Polonica A

2003

vol. 103

issue 2-3

293-300

Photoinduced optical second harmonic generation was demonstrated in the several dithiole chromophore molecules with different degree of acceptor function. Theoretical quantum chemical simulations and experimental photoinduced second harmonic generation measurements showed that additional aromatic rings within the dithiole chromophore molecule play an important role in the pump-power dependencies of the second harmonic generation. Varying the presence of the aromatic rings one can achieve substantially different photoinduced second-order nonlinear optical properties.

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2 Acta Physica Polonica A

1 2003

1 1999

2 Gorgues A.

2 Sahraoui B.

1 Kityk I.

1 Makowska-Janusik M.

1 Migalska-Zalas A.

1 Nguyen Phu X.

1 Salle M.

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

Photoinduced SHG in Push-Pull Chromophores 1,3-dithiol-2-yliedene Moieties Embedded in Photopolymer Matrices