Stuttgart 2012 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 6: Femtosecond Spectroscopy I
MO 6.9: Vortrag
Montag, 12. März 2012, 18:30–18:45, V38.03
Selective population of dressed states: A robust pathway to populate selectively higher lying electronic states in molecules? — •Philipp von den Hoff1, Hendrike Braun2, Tim Bayer2, Matthias Wollenhaupt2, Thomas Baumert2, and Regina de Vivie-Riedle1 — 1Ludwig-Maximilians-Universität München, Departement Chemie, Germany — 2University of Kassel, Institute of Physics and CINSaT, D-34132 Kassel, Germany
Selective population of dressed states (SPODS) has been proposed as an alternative control pathway in molecular reaction dynamics [1]. Recently, this scenario was successfully implemented in experiments using the molecule K2. Based on these results, we investigate if and under which conditions this strong field scheme is included in the search space of optimal control theory (OCT). Thereby we classify SPODS within the global search space of OCT and discuss the question of robustness. Like in the experiments we use the example of the potassium dimer. Within the SPODS–mechanism different target states can be reached via dressed states by subcycle control of the phase relation of the corresponding electric dipole and the strong light field. Especially, we investigate whether the optimization algorithm is able to find the route involving the dressed states although the target state lies out of resonance in the bare state picture.
[1] M. Wollenhaupt et al., Phys. Rev. A 68,
0154011 (2003)