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Proceedings Paper

Large refractive nonlinearities and two-photon absorption in aryl-substituted dithiolenes
Author(s): Stephen V. Kershaw; Stephen Nigel Oliver; Robert J. Manning; James D. Rush; Callum A. S. Hill; Allan E. Underhill; Adam Charlton
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Paper Abstract

We have investigated some aryl substituted dithiolenes which show enhanced nonlinearity and their incorporation into polymer films. These neutral molecules show strong near infra-red absorption whose position is determined primarily by the extent of electron delocalization and the metal atom to which the sulphur ligands are attached. The presence of electron donating groups bathochromically shifts the band and selective detuning from the band is possible to arrive at optimum values for the important ration of nonlinear susceptibility to linear absorption, (chi) (3)/(alpha) . Nonlinear optical characterization of these materials by degenerate four wave mixing and z-scan is described.

Paper Details

Date Published: 16 December 1993
PDF: 12 pages
Proc. SPIE 2025, Nonlinear Optical Properties of Organic Materials VI, (16 December 1993); doi: 10.1117/12.165276
Show Author Affiliations
Stephen V. Kershaw, BT Labs. (United Kingdom)
Stephen Nigel Oliver, BT Labs. (United Kingdom)
Robert J. Manning, BT Labs. (United Kingdom)
James D. Rush, BT Labs. (United Kingdom)
Callum A. S. Hill, Univ. College of North Wales (United Kingdom)
Allan E. Underhill, Univ. College of North Wales (United Kingdom)
Adam Charlton, Univ. College of North Wales (United Kingdom)


Published in SPIE Proceedings Vol. 2025:
Nonlinear Optical Properties of Organic Materials VI
Gustaaf R. Moehlmann, Editor(s)

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