Heidelberg 2015 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MO: Fachverband Molekülphysik

MO 11: Posters 2: Novelties in Molecular Physics

MO 11.10: Poster

Dienstag, 24. März 2015, 17:00–19:00, C/Foyer

Sub-cycle control of electron dynamics in atoms and molecules — •Hendrike Braun¹, Tim Bayer², Matthias Wollenhaupt², and Thomas Baumert¹ — ¹Universität Kassel, Institut für Physik und CINSaT, D-34132 Kassel, Germany — ²Carl von Ossietzky Universität Oldenburg, Institut für Physik, 26129 Oldenburg, Germany

The electron dynamics in atoms as well as the concerted electron-nuclear dynamics in molecules can be controlled by the resonant AC stark effect [1]. The Selective Population Of Dressed States (SPODS) allows us to manipulate the interaction energy of the quantum system and the driving laser pulse to steer the electronic population into a predefined target channel. To this end we tailor the optical phase of femtosecond laserpulses to the induced dipolemoment in the quantum system and thereby control the intricate interplay of the driving electric field and the induced electronic coherence [2,3]. The necessary sub-cycle precision in shaping the laserpulses to control the electron dynamics on their inherent timescale of atto- to few femtoseconds is highlighted as well as the theoretical and experimental efficiency of the control scheme. Furthermore we explore the possibility of adiabatic control scenarios in systems with coupled degrees of freedom [4].

[1] T. Bayer et al., invited article Adv. Chem. Physics, submitted

[2] H. Braun et al., J. Phys. B 47, 124015 (2014)

[3] T. Bayer et al., Phys. Rev. Lett. 110, 123003 (2013)

[4] J. Schneider et al., Phys. Chem. Chem. Phys. 13, 8733 (2011)