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Two-Dimensional Electronic Spectroscopy- Basics and Applications to Bio-Systems

Date Do, 08.11.2012 - Do, 08.11.2012
Time 10.15
Speaker Dr. Jürgen Hauer, Multidimensional Molecular Spectroscopy Group, Photonics Institute, Vienna Technical University
Location Universität Bern, Institut für Angewandte Physik, Gebäude exakte Wissenschaften, Hörsaal B116, Sidlerstrasse 5, 3012 Bern
Program Two-dimensional electronic spectroscopy (2D-ES) with ultrashort pulses is a state-of-the-art tool for the investigation of molecular dynamics, line broadening mechanisms and quantum coherence phenomena in biology. In this talk, I will explain the basics of 2D-ES and compare to other ultrafast experimental techniques like pump-probe. Focusing on biological systems, I will discuss several experimental studies where 2D-ES lead to insightful and experimentally well- founded perspectives on intricate molecular population- and coherence-dynamics. Examples are the exciton dynamics in natural photosynthetic complexes, the energy deactivation network in carotenoids and the relaxation pathways in an artificial light harvesting system. In an outlook, I will demonstrate how 2D-ES is easily upgraded by the use of pulse shaping devices.
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