Synthesis and characterization of metal-sulphur ligand complexes having high third-order optical nonlinearities

Callum A. S. Hill; Allan E. Underhill; Adam Charlton; Christopher S. Winter; Stephen Nigel Oliver; James D. Rush

doi:10.1117/12.139225

25 February 1993 Synthesis and characterization of metal-sulphur ligand complexes having high third-order optical nonlinearities

Callum A. S. Hill, Allan E. Underhill, Adam Charlton, Christopher S. Winter, Stephen Nigel Oliver, James D. Rush

Author Affiliations +

Proceedings Volume 1775, Nonlinear Optical Properties of Organic Materials V; (1993) https://doi.org/10.1117/12.139225
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

Metal dithiolenes (Fig. 1) consist of conjugated organo sulphur ligands bound to a central metal atom and exhibit a range of interesting electrical and optical properties. Until recently this type of material was primarily of interest owing to the ability of some derivatives to act as u-electron donors in "organic metal" charge transfer salts1, though a resonant enhanced nonlinearity has been measured in the derivative BDN. 2 Electron delocalisation involving interaction through the metal leads to materials having low energy excited states. Strong absorption bands can occur throughout the visible and near infra-red regions depending on the exact nature of substitution. Tuning the absorption band near to the laser fundamental can result in the observation of a high nonlinear refractive index (n2 = 5 x 1011cm2/kW) coupled with low loss (cx = O.l6cm') in dilute solutions of selected derivatives.

Citation Download Citation

Callum A. S. Hill, Allan E. Underhill, Adam Charlton, Christopher S. Winter, Stephen Nigel Oliver, and James D. Rush "Synthesis and characterization of metal-sulphur ligand complexes having high third-order optical nonlinearities", Proc. SPIE 1775, Nonlinear Optical Properties of Organic Materials V, (25 February 1993); https://doi.org/10.1117/12.139225

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