Bicircular high-harmonic spectroscopy reveals dynamical symmetries of atoms and molecules

D Baykusheva, MS Ahsan, N Lin, HJ Wörner - Physical review letters, 2016 - APS
We introduce bicircular high-harmonic spectroscopy as a new method to probe dynamical
symmetries of atoms and molecules and their evolution in time. Our approach is based on …

Qprop with faster calculation of photoelectron spectra

V Tulsky, D Bauer - Computer Physics Communications, 2020 - Elsevier
The calculation of accurate photoelectron spectra (PES) for strong-field laser-atom
experiments is a demanding computational task, even in single-active-electron …

Nonadiabatic strong field ionization of atomic hydrogen

D Trabert, N Anders, S Brennecke, MS Schöffler… - Physical Review Letters, 2021 - APS
We present experimental data on the nonadiabatic strong field ionization of atomic hydrogen
using elliptically polarized femtosecond laser pulses at a central wavelength of 390 nm. Our …

Divergence and efficiency optimization in polarization-controlled two-color high-harmonic generation

SDC Roscam Abbing, F Campi, A Zeltsi… - Scientific Reports, 2021 - nature.com
Improving the brightness of high-harmonic generation (HHG) sources is one of the major
goals for next-generation ultrafast, imaging and metrology applications in the extreme …

High-order harmonic generation by bi-elliptical orthogonally polarized two-color fields

DB Milošević, W Becker - Physical Review A, 2020 - APS
Based on the strong-field approximation, we report results for high-order harmonic
generation by bi-elliptical orthogonally polarized two-color (BEOTC) fields with frequency …

X-ray harmonic generation by orthogonally polarized two-color fields: Spectral shape and polarization

DB Milošević, W Becker - Physical Review A, 2019 - APS
Orthogonally polarized two-color fields, typically with a frequency ratio of 2: 1, only rarely of
3: 1, have been utilized for a variety of purposes. Driving high-order harmonic generation …

High-order harmonic generation from diatomic molecules in an orthogonally polarized two-color laser field

B Zhang, M Lein - Physical Review A, 2019 - APS
We study high-order harmonic generation (HHG) from aligned H 2+ and oriented HeH 2+
and HeH+ molecular ions in orthogonally polarized two-color laser pulses composed of an …

Signatures of electronic structure in bicircular high-harmonic spectroscopy

D Baykusheva, S Brennecke, M Lein, HJ Wörner - Physical review letters, 2017 - APS
High-harmonic spectroscopy driven by circularly polarized laser pulses and their
counterrotating second harmonic is a new branch of attosecond science which currently …

Entropy-based time-varying window width selection for nonlinear-type time–frequency analysis

YL Sheu, LY Hsu, PT Chou, HT Wu - International Journal of Data Science …, 2017 - Springer
We propose a time-varying optimal window width (TVOWW) and an adaptive optimal
window width selection schemes to optimize the performance of several nonlinear-type time …

High-order harmonic generation by aligned heteronuclear diatomic molecules in an orthogonally polarized two-color laser field

D Habibović, W Becker, DB Milošević - The European Physical Journal D, 2021 - Springer
Using the molecular strong-field approximation, we investigate high-order harmonic
generation by heteronuclear diatomic molecules exposed to an orthogonally polarized two …