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by Keyword: Superradiance


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Hernando, Jordi, Hoogenboom, Jacob, van Dijk, Erik, Garcia-Parajo, Maria, van Hulst, Niek F., (2008). Ultrafast single-molecule photonics: Excited state dynamics in coherently coupled complexes Journal of Luminescence 16th International Conference on Dynamical Processes in Excited States of Solids (ed. -----), Elsevier Science BV (Segovia, Spain) 128, (5-6), 1050-1052

We present a single-molecule study on femtosecond dynamics in multichromophoric systems, combining fs pump-probe, emission-spectra and fluorescence-lifetime analysis. The ultrafast fs approach gives direct information on the initial exciton dynamics after excitation. The lifetime data show superradiance, a direct measure for the extent of the coherent coupling and static disorder. The spectra finally reveal the role of exciton-phonon coupling. At the single-molecule level a wide range of exciton delocalization lengths and energy redistribution times is revealed.

Keywords: Single-molecule detection, Pump-probe, Exciton delocalization, Superradiance, Exciton-phonon coupling