Large third-order optical nonlinearity of the organic metal α-[bis(ethylenedithio) tetrathiofulvalene] triiodide

Huggard, P. G.; Blau, W.; Schweitzer, D.
December 1987
Applied Physics Letters;12/28/1987, Vol. 51 Issue 26, p2183
Academic Journal
The organic metal α-[bis(ethylenedithio) tetrathiofulvalene]2I3 shows a large third-order optical nonlinearity around 650 nm, as observed by forward degenerate four-wave mixing. Nonlinear susceptibilities of |χ(3)| ∼5×10-8 esu are observed along the direction of maximum conductivity. The frequency dispersion of the nonlinearity points to a plasma effect due to the conduction electrons.


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