Bonn 2025 – scientific programme
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A: Fachverband Atomphysik
A 22: Poster – Attosecond Physics
A 22.3: Poster
Wednesday, March 12, 2025, 17:00–19:00, Tent
A Beamline for soft X-ray attosecond spectroscopy — •Naglis Kriunas1,2, Fabian Scheiba1,3,4, Rafael d. Q. Garcia1,3, Maximilian Kubullek1,3, Miguel Silva1,3, Roland E. Mainz1,3,4, Giulio Maria Rossi1,4, and Franz X. Kärtner1,3,4 — 1Center for Free-Electron Laser Science CFEL and Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany — 2School of Chemistry, University of Edinburgh, The King's Buildings, West Mains Road, Edinburgh EH9 3JJ, UK — 3Physics Department, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany — 4The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany
We present the layout of our newly developed attosecond beamline. To improve the soft X-ray detection, we implemented a high efficiency reflective zone plate spectrometer. A differentially pumped transient absorption cell allows for gas phase experiments with organic molecules. Our sub-cycle parametric waveform Synthesizer (PWS) [1] allows for sub-fs pump duration in multi-photon/strong-field interaction. This, jointly with tunable isolated attosecond pulses with photon energies from the XUV up to 450 eV enables attosecond resolution in both, pump and probe. A precise dispersion management scheme and phase stabilization paves the way for quantum control in photochemical reactions.
[1] Rossi, G.M. et al. Sub-cycle millijoule-level parametric waveform synthesizer for attosecond science. Nat. Photonics 14, 629-635 (2020). https://doi.org/10.1038/s41566-020-0659-0
Keywords: soft x-ray; transient absorption; beamline; isolated attosecond pulse; sub-cycle parametric waveform