Freiburg 2024 – scientific programme
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A: Fachverband Atomphysik
A 15: Poster I
A 15.8: Poster
Tuesday, March 12, 2024, 17:00–19:00, Tent A
Multi-Sideband RABBIT in Atoms and Molecules — •Divya Bharti1, Hemkumar Srinivas1, Farshad Shobeiry1, Kathryn Hamilton2, Robert Moshammer1, Thomas Pfeifer1, Klaus Bartschat3, and Anne Harth1,4 — 1Max-Planck-Institute for Nuclear Physics, Heidelberg, Germany — 2Department of Physics, University of Colorado Denver, Denver, Colorado, USA — 3Department of Physics and Astronomy, Drake University, Des Moines, USA — 4Department of Optics and Mechatronics, Hochschule Aalen, Aalen, Germany
We present findings derived from measuring three-sideband (3-SB) RABBIT (Reconstruction of Attosecond Beating by Interference of Two-Photon Transition) in atoms and molecules. RABBIT utilizes an XUV pulse train to induce ionization, while an IR pulse interacts with the subsequent photoelectrons. In the 3-SB RABBIT setup, interactions with IR photons generate three sidebands positioned between consecutive harmonics. This configuration allows us to explore phases resulting from the interference between transitions of different orders in the continuum. These phases remain independent of any chirps in the harmonics, and we investigate this by comparing RABBIT phases extracted from specific sideband groups formed by adjacent harmonics. Additionally, we explore cases where the oscillation in the sidebands involves intermediary resonance states.
Keywords: Attosecond Dynamics; RABBITT; Photoelectron Interferometry; Continuum-continuum transition; HHG