225 citations · 609 across the 8 of their papers we have counts for
8 papers
Sub-barrier recollisions and the three classes of tunneling time delays in strong-field ionization
Michael Klaiber, Daniel Bakucz Canário, Karen Z. Hatsagortsyan
Tunneling ionization is characterized by a negative time delay, observed asymptotically as a specific shift of the photoelectron momentum distribution, which is caused by the inter…
Laser-driven relativistic tunneling from p-states
Michael Klaiber, Karen Z. Hatsagortsyan
The tunneling ionization of an electron from a p-state in a highly charged ion in the relativistic regime is investigated in a linearly polarized strong laser field. In contrast to…
Tunneling dynamics in multiphoton ionization and attoclock calibration
M. Klaiber, K. Z. Hatsagortsyan, C. H. Keitel
The intermediate domain of strong-field ionization between the tunneling and the multiphoton regimes is investigated using the strong field approximation and the imaginary-time met…
High-Energy Recollision Processes of Laser-Generated Electron-Positron Pairs
Sebastian Meuren, Karen Z. Hatsagortsyan, Christoph H. Keitel +1
Two oppositely charged particles created within a microscopic space-time region can be separated, accelerated over a much larger distance, and brought to a recollision by a laser f…
Polarization operator approach to pair creation in short laser pulses
Sebastian Meuren, Karen Z. Hatsagortsyan, Christoph H. Keitel +1
Short-pulse effects are investigated for the nonlinear Breit-Wheeler process, i.e. the production of an electron-positron pair induced by a gamma photon inside an intense plane-wav…
Robust signatures of quantum radiation reaction in focused ultrashort laser pulses
Jian-Xing Li, Karen Z. Hatsagortsyan, Christoph H. Keitel
Radiation reaction effects in the interaction of an electron bunch with a superstrong focused ultrashort laser pulse are investigated in the quantum radiation dominated regime. The…