The Femtosecond Dynamics of Aggregate Excitons in Liquids

M. V. Burgel; D.A. Wiersma; K. Duppen

doi:10.1364/UP.1994.PD.10

Ultrafast Phenomena
Technical Digest Series (Optica Publishing Group, 1994),
paper PD.10
•https://doi.org/10.1364/UP.1994.PD.10

The Femtosecond Dynamics of Aggregate Excitons in Liquids

M. V. Burgel, D.A. Wiersma, and K. Duppen

International Conference on Ultrafast Phenomena 1994

California United States
2–6 May 1994
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M. V. Burgel, D. A. Wiersma, and K. Duppen, "The Femtosecond Dynamics of Aggregate Excitons in Liquids," in Ultrafast Phenomena, Technical Digest Series (Optica Publishing Group, 1994), paper PD.10.

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Abstract

Room temperature photon echo experiments show that optical dephasing in aggregates of dye molecules in solution is very slow (T₂> 100 fs), due to motional narrowing over dynamic perturbations. By pump-probe experiments on multiple-exciton transitions the range of exciton delocalization was determined to be 18 molecules.

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