Hannover 2013 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 14: Poster 1: Cluster, Femtosecond Spectroscopy

MO 14.24: Poster

Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof

Charge oscillation controlled molecular excitation — •Hendrike Braun¹, Tim Bayer¹, Cristian Sarpe¹, Robert Siemering², Philipp von den Hoff², Regina de Vivie-Riedle², Thomas Baumert¹, and Matthias Wollenhaupt¹ — ¹University of Kassel, Institute of Physics and CINSaT, D-34132 Kassel, Germany — ²Ludwig-Maximilians-Universität München, Departement Chemie, D-81377 München, Germany

Direct manipulation of charge oscillations has emerged as a new perspective in chemical reaction control. Here we demonstrate in a joint experimental and theoretical study, that the electron dynamics of a molecule is efficiently steered by controlling the interplay of a driving femtosecond laser pulse with the photo-induced charge oscillation on the sub-cycle time scale. Specifically, we show how precision pulse shaping is used to manipulate the coupled electron and nuclear dynamics in order to address different bound electronic target states in a molecule. We present a strong field coherent control mechanism which is understood in terms of a simple classical picture and at the same time verified by solving the time-dependent Schrödinger Equation [1]. This mechanism is universally applicable and opens a wide spectrum of applications in reaction control of complex systems [2].

[1] M. Wollenhaupt et al., JPPA 180, 248 (2006)

[2] M. Wollenhaupt, T. Baumert, Faraday Discuss. 153, 9-26 (2011)