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Photoinduced Nonlinear Effects in C_{60}-2-thioxo-1,3-di thiole and C_{60}-TTF Derivatives

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Migalska-Zalas A., Fuks-Janczarek I., Dabos-Seignon S., Sahraoui B., Kityk I., Allard E., Kreher D., Cousseau J., Hudhomme P., Gorgue A.

Acta Physica Polonica A

2003

vol. 103

issue 2-3

283-292

Photoinduced effects in pure C_{60}:C_{60}-TTF and C_{60}-2-thioxo-1,3-dithiole cycloadducts are investigated using nonlinear optical techniques. We have studied photoinduced optical second harmonic generation, two-photon absorption, linear electro-optics, and quadratic electro-optic effect coefficient versus applied pressure (p) and temperature (T). We deduce the influence of the grafted substituents in pure C_{60} on the observed photoinduced effects. The obtained results illustrate clearly that the photoinduced nonlinear optics can be used as a tool to detect structural changes at low temperature in modified C_{60}. We have unambiguously demonstrated that, under the applied hydrostatic pressure up to 19 GPa and the temperature from 4.2 up to 150 K, the observed effects are essentially caused by the grafted TTF derivatives.

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1 Acta Physica Polonica A

1 2003

1 Allard E.

1 Cousseau J.

1 Dabos-Seignon S.

1 Fuks-Janczarek I.

1 Gorgue A.

1 Hudhomme P.

1 Kityk I.

1 Kreher D.

1 Migalska-Zalas A.

1 Sahraoui B.

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Photoinduced Nonlinear Effects in C_{60}-2-thioxo-1,3-di thiole and C_{60}-TTF Derivatives