Separation of Electronic and Nuclear Contributions to the Third-Order Nonlinear Optical Susceptibilities of New Tetrathiafulvalene Derivatives Using Degenerate Four Wave Mixing |
| B. Sahraoui, X. Nguyen Phu Laboratoire des Propriétés Optiques des Matériaux et Applications: POMA, CNRS EP 130, Université d'Angers, 2, Boulevard Lavoisier, 49045 Angers cedex, France M. Sallé and A. Gorgues Laboratoire d'Ingénierie Moléculaire Matériaux et Organiques, UMR CNRS 6501 Université d'Angers, 2, Boulevard Lavoisier, 49045 Angers cedex, France |
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| We separate the electronic and nuclear contributions to the third-order nonlinear optical susceptibilities χijkl〈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 105 greater than for CS2. |
| DOI: 10.12693/APhysPolA.95.837 PACS numbers: 42.65.Ky, 78.66.Qn, 42.70.Nq |