Optical Sciences

Biomolecules and nanostructures

The Optical Sciences group studies the interaction of light and matter at the nanoscale. We do this by exploring ways to shape light and its environment. It's what we call active and passive control. Our current focus is on the interaction of light with biomolecules and nanostructures. We are part of Twente University's Department of Science and Technology and member of the MESA+ institute.
We participate in the EU-COST actions MP1102: Coherent Raman microscopy (MicroCor) and CM1202: Supramolecular photocatalytic water splitting (PERSPECT-H2O)


Ultrafast single-molecule photonics: Excited state dynamics in coherently coupled complexes

(full pdf)

Jordi Hernando, Jacob Hoogenboom, Erik van Dijk, Maria Garcia-Parajo, Niek F. van Hulst
Journal of Luminescence
vol 128 issue 5-6 p1050–1052 jan 2 2008

We present a single-molecule study on femtosecond dynamics in multichromophoric systems, combining fs pump–probe, emissionspectra 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.
© 2007 Elsevier B.V. All rights reserved.
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