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Nonlinear-optical response in polythiophene films using four-wave mixing techniques

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Abstract

We report measurement of χ3 in polythiophene and a homologous series of polycondensed thiophene-based polymers above and below the absorption edge using the folded-boxcar four-wave mixing technique. Above gap the nonlinear coefficient χ3 was found to be one of the largest and fastest in a polymer.

© 1989 Optical Society of America

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