5 papers
Extraction of higher-order nonlinear electronic response to strong field excitation in solids using high harmonic generation
Seunghwoi Han, Lisa Ortmann, Hyunwoong Kim +9
State-of-the-art experiments employ strong ultrafast optical fields to study the nonlinear response of electrons in solids on an attosecond time-scale. Notably, a recent experiment…
Symphony on Strong Field Approximation
Kasra Amini, Jens Biegert, Francesca Calegari +22
This paper has been prepared by the Symphony collaboration (University of Warsaw, Uniwersytet Jagielloński, DESY/CNR and ICFO) on the occasion of the 25th anniversary of the "simpl…
Intensity dependence of Rydberg states
L. Ortmann, C. Hofmann, A. S. Landsman
We investigate numerically and analytically the intensity dependence of the fraction of electrons that end up in a Rydberg state after strong-field ionization with linearly polariz…
Instantaneous ionization rate as a functional derivative
I. A. Ivanov, C. Hofmann, L. Ortmann +3
We describe an approach defining instantaneous ionization rate (IIR) as a functional derivative of the total ionization probability. The definition is based on physical quantities…
Attosecond streaking delays in multi-electron systems
Tomáš Zimmermann, Lisa Ortmann, Cornelia Hofmann +2
The use of semiclassical models based on the Strong Field Approximation (SFA) is ubiquitous in strong field multi-photon ionization and underlies many key developments in attosecon…