Ultrafast quantum control of ionization dynamics in krypton

Konrad Hütten, Michael Mittermair, Sebastian O. Stock, Randolf Beerwerth, Vahe Shirvanyan, Johann Riemensberger, Andreas Duensing, Rupert Heider, Martin S. Wagner, Alexander Guggenmos, Stephan Fritzsche, Nikolay M. Kabachnik, Reinhard Kienberger and Birgitta Bernhardt ()
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Konrad Hütten: Technical University of Munich
Michael Mittermair: Technical University of Munich
Sebastian O. Stock: Helmholtz-Institut Jena
Randolf Beerwerth: Helmholtz-Institut Jena
Vahe Shirvanyan: Technical University of Munich
Johann Riemensberger: Technical University of Munich
Andreas Duensing: Technical University of Munich
Rupert Heider: Technical University of Munich
Martin S. Wagner: Technical University of Munich
Alexander Guggenmos: Max Planck Institute of Quantum Optics
Stephan Fritzsche: Helmholtz-Institut Jena
Nikolay M. Kabachnik: European XFEL GmbH
Reinhard Kienberger: Technical University of Munich
Birgitta Bernhardt: Technical University of Munich

Nature Communications, 2018, vol. 9, issue 1, 1-5

Abstract: Abstract Ultrafast spectroscopy with attosecond resolution has enabled the real time observation of ultrafast electron dynamics in atoms, molecules and solids. These experiments employ attosecond pulses or pulse trains and explore dynamical processes in a pump–probe scheme that is selectively sensitive to electronic state of matter via photoelectron or XUV absorption spectroscopy or that includes changes of the ionic state detected via photo-ion mass spectrometry. Here, we demonstrate how the implementation of combined photo-ion and absorption spectroscopy with attosecond resolution enables tracking the complex multidimensional excitation and decay cascade of an Auger auto-ionization process of a few femtoseconds in highly excited krypton. In tandem with theory, our study reveals the role of intermediate electronic states in the formation of multiply charged ions. Amplitude tuning of a dressing laser field addresses different groups of decay channels and allows exerting temporal and quantitative control over the ionization dynamics in rare gas atoms.

Date: 2018
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DOI: 10.1038/s41467-018-03122-1

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