[HTML][HTML] Saddle point approaches in strong field physics and generation of attosecond pulses

A Nayak, M Dumergue, S Kühn, S Mondal… - Physics reports, 2019 - Elsevier
Attoscience is the emerging field that accesses the fastest electronic processes occurring at
the atomic and molecular length scales with attosecond (1 as= 1 0− 18 s) time resolution …

Experimental evidence for quantum tunneling time

N Camus, E Yakaboylu, L Fechner, M Klaiber, M Laux… - Physical review …, 2017 - APS
The first hundred attoseconds of the electron dynamics during strong field tunneling
ionization are investigated. We quantify theoretically how the electron's classical trajectories …

Breakdown of the dipole approximation in strong-field ionization

A Ludwig, J Maurer, BW Mayer, CR Phillips… - Physical review …, 2014 - APS
We report the breakdown of the electric dipole approximation in the long-wavelength limit in
strong-field ionization with linearly polarized few-cycle mid-infrared laser pulses at …

Tunneling ionization time resolved by backpropagation

H Ni, U Saalmann, JM Rost - Physical review letters, 2016 - APS
We determine the ionization time in tunneling ionization by an elliptically polarized light
pulse relative to its maximum. This is achieved by a full quantum propagation of the electron …

Review on non-dipole effects in ionization and harmonic generation of atoms and molecules

MX Wang, SG Chen, H Liang, LY Peng - Chinese Physics B, 2020 - iopscience.iop.org
In this review, we will focus on recent progress on the investigations of nondipole effects in
few-electron atoms and molecules interacting with light fields. We first briefly survey several …

Magnetic fields alter strong-field ionization

A Hartung, S Eckart, S Brennecke, J Rist, D Trabert… - Nature Physics, 2019 - nature.com
When a strong laser pulse induces the ionization of an atom, momentum conservation
dictates that the absorbed photons transfer their momentum to the electron and its parent …

Ionization time and exit momentum in strong-field tunnel ionization

N Teeny, E Yakaboylu, H Bauke, CH Keitel - Physical Review Letters, 2016 - APS
Tunnel ionization belongs to the fundamental processes of atomic physics. The so-called
two-step model, which describes the ionization as instantaneous tunneling at the electric …

Tunneling dynamics in multiphoton ionization and attoclock calibration

M Klaiber, KZ Hatsagortsyan, CH Keitel - Physical Review Letters, 2015 - APS
The intermediate domain of strong-field ionization between the tunneling and multiphoton
regimes is investigated using the strong-field approximation and the imaginary-time method …

High-order above-threshold ionization beyond the electric dipole approximation

S Brennecke, M Lein - Journal of Physics B: Atomic, Molecular …, 2018 - iopscience.iop.org
Photoelectron momentum distributions from strong-field ionization are calculated by
numerical solution of the one-electron time-dependent Schrödinger equation for a model …

Magnetic-field effect as a tool to investigate electron correlation in strong-field ionization

K Lin, X Chen, S Eckart, H Jiang, A Hartung… - Physical Review Letters, 2022 - APS
The influence of the magnetic component of the driving electromagnetic field is often
neglected when investigating light-matter interaction. We show that the magnetic component …