Third-order nonlinear optical properties of a soluble conjugated polythiophene derivative
- 19 June 1989
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 54 (25), 2524-2526
- https://doi.org/10.1063/1.101082
Abstract
The second hyperpolarizability 〈γxxxx 〉 of a new, soluble, conjugated polythiophene derivative, containing aromatic and quinoid moieties, is measured to be 1.2×10−31 esu. The measurement was made at 532 nm in a dichloromethane solution by picosecond-resolved degenerate four wave mixing. The corresponding macroscopic third-order susceptibility χ(3 ) is estimated to be 4.6×10−9 esu, which is larger than that of the parent poly(2,5-thiophene) and many currently known nonlinear optical polymers.Keywords
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