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MO: Fachverband Molekülphysik
MO 5: Interaction with Strong or Short Laser Pulses I (joint session A/MO)
MO 5.1: Invited Talk
Tuesday, March 12, 2024, 11:00–11:30, HS 1010
Strong-field coherent control in the extreme ultraviolet domain — •F. Richter1, U. Saalmann2, M. Wollenhaupt3, E. Allaria4, C. Callegari4, M. Danailov4, L. Gianessi4, M. Zangrando4, and L. Bruder1 — 1Institute of Physics, University of Freiburg — 2Max-Planck-Institut für Physik komplexer Systeme, Dresden — 3Institute of Physics, University of Oldenburg — 4Elettra - Sincrotrone Trieste S.C.p.A., Trieste, Italy
Coherent control drew a lot of interest in recent years spanning over various fields of research regarding the promising abilities for quantum computing and precision measurements. Coherent control extended to the strong-field regime is particularly promising for the manipulation of matter and the control of photochemical reactions. In this work, we develop a scheme to extend strong-field coherent control to the XUV domain. With intense XUV pulses, we induce Rabi oscillations in atoms, leading to Autler-Townes level splittings in the photoelectron spectra [1]. In the near infrared domain, the feasibility to coherently control the population of the Autler-Townes doublet has been shown, based on chirp manipulation of the laser pulses [2,3]. To establish comparable schemes in the XUV domain, we implement chirp control of the XUV pulses from the free electron laser FERMI. By manipulating the chirp of the XUV pulses in a controlled way, we demonstrate strong-field coherent control of Autler-Townes states in the XUV domain.
[1] S. Nandi et al. Nature 608, 488*493 (2022). [2] M. Wollenhaupt et al., Appl. Phys. B 82, 183*188 (2006). [3] U. Saalmann et al., Phys. Rev. Lett. 121, 153203 (2018).
Keywords: Coherent control; Free electron laser; Pulse shaping; Autler Townes; XUV