Separation of electronic and nuclear contributions to the third-order nonlinear optical susceptibilities of new tetrathiafulvalene derivatives using degenerate four wave mixing

Authors
Sahraoui, B Phu, XN Salle, M Gorgues, A
Citation
B. Sahraoui et al., Separation of electronic and nuclear contributions to the third-order nonlinear optical susceptibilities of new tetrathiafulvalene derivatives using degenerate four wave mixing, ACT PHY P A, 95(5), 1999, pp. 837-842
Citations number
8
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA POLONICA A
ISSN journal
05874246 → ACNP
Volume
95
Issue
5
Year of publication
1999
Pages
837 - 842
Database
ISI
SICI code
0587-4246(199905)95:5<837:SOEANC>2.0.ZU;2-G
Abstract
We separate the electronic and nuclear contributions to the third-order non linear optical susceptibilities chi(ijki)((3)) using degenerate four wave m ixing. This method allows to know the physical origin of the optical nonlin earities of new soluble tetrathiafulvalene derivatives and deduce the value s of the second-order hyperpolarisabilities gamma. The values of gamma for the studied compounds are about 10(5) greater than for CS2.