Studies of optical nonlinearity in bis-thienyl polyenes
- 23 September 1994
- proceedings article
- Published by SPIE-Intl Soc Optical Eng
- p. 186-195
- https://doi.org/10.1117/12.187514
Abstract
We measure the magnitude and phase of the degenerate third-order nonlinear optical susceptibility (chi) (3)llll of solutions of various bis-thienyl polyenes (n-BTP) with the number n of the conjugated double bonds ranging from 3 to 9. We study both neutral and bipolaronic (i.e., doubly ionized) forms of n-BTP. We find that, within experimental error, (chi) (3)llll is proportional to nb where b-5.5 at 532 nm for our neutral n-BTP samples which have 3 (3)llll of the bipolaronic n-BTP assuming it is associated with this absorption band acting as a two-level system and find good agreement with experiment.Keywords
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