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MO: Fachverband Molekülphysik

MO 1: Attosecond Science I (joint session A/MO)

MO 1.5: Vortrag

Montag, 5. März 2018, 12:00–12:15, K 1.011

Reconstructing real-time quantum dynamics in strong and short laser fields — •Veit Stooss¹, Stefano M. Cavaletto¹, Stefan Donsa², Alexander Blättermann¹, Paul Birk¹, Christoph H. Keitel¹, Iva Brezinová², Joachim Burgdörfer², Christian Ott¹, and Thomas Pfeifer¹ — ¹Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany, EU — ²Institute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstraße 8, 1040 Vienna, Austria, EU

Recent results [1, 2, 3] suggest a link between the shape of spectral lines and strong-field-induced amplitude and phase shifts of the response function of the system. Here, we present a method which allows the retrieval of the entire holographic (amplitude and phase) time-resolved response function recording the transient absorption spectrum of an ultrashort probe signal. This still holds for the case of coherently excited systems which exhibit complex time dependence due to the interaction with strong fields. This finding is applied to a time-domain observation of Rabi cycling between doubly-excited atomic states in the few-femtosecond regime. The principle is shown to be viable also in much more complex systems and unlocks the real-time-resolved observation of theresponse function for non-equilibrium states of matter with a single-shot measurement.
C. Ott et.al, Science 340, 716-720 (2013) [2] A. Kaldun, Phys. Rev. Lett. 112, 103001 (2014) [3] H. Mashiko et al., Nat. Comm. 5, 5599 (2014)