100 citations · 759 across the 25 of their papers we have counts for
25 papers
Identifying Strong-Field Effects in Indirect Photofragmentation Reactions
Chuan-Cun Shu, Kai-Jun Yuan, Daoyi Dong +2
Exploring molecular breakup processes induced by light-matter interactions has both fundamental and practical implications. However, it remains a challenge to elucidate the underly…
Nonlinear Nonperturbative Optics Model Enriched by Evolution Equation for Polarization
M. Lytova, E. Lorin, A. Bandrauk
In this work, we extend and analyze the nonperturbative Maxwell-Schrödinger-Plasma (MASP) model. This model was proposed to describe the high order optical nonlinearities, and the…
Excitation of H with one-cycle laser pulses: Shaped post-laser-field electronic oscillations, generation of higher- and lower-order harmonics
Guennaddi K. Paramonov, Oliver Kühn, Andre D. Bandrauk
Non Born-Oppenheimer quantum dynamics of H excited by shaped one-cycle laser pulses linearly polarized along the molecular axis have been studied by the numerical solutio…
XUV lasing during strong-field assisted transient absorption in molecules
Timm Bredtmann, Szczepan Chelkowski, Andre. D. Bandrauk +1
Using ab-initio non-Born-Oppenheimer simulations, we demonstrate amplification of XUV radiation in a high-harmonic generation type process using the example of the hydrogen molecul…
Galerkin method for unsplit 3-D Dirac equation using atomically/kinetically balanced B-spline basis
F. Fillion-Gourdeau, E. Lorin, A. D. Bandrauk
A Galerkin method is developed to solve the time-dependent Dirac equation in prolate spheroidal coordinates for an electron-molecular two-center system. The initial state is evalua…
Circularly Polarized Molecular High Harmonic Generation Using a Bicircular Laser
F Mauger, A. D. Bandrauk, T Uzer
We investigate the process of circularly polarized high harmonic generation in molecules using a bicircular laser field. In this context, we show that molecules offer a very robust…
Circularly Polarized Attosecond Pulses and Molecular Atto-Magnetism
Andre D. Bandrauk, Kai-Jun Yuan
Various schemes are presented for the generation of circularly polarized molecular high-order harmonic generation (MHOHG) from molecules. In particular it is shown that combination…
Electronic dynamics and frequency-dependent effects in circularly polarized strong-field physics
Francois Mauger, A. D. Bandrauk
We analyze, quantum mechanically, the dynamics of ionization with a strong, circularly polarized, laser field. We show that the main source for non-adiabatic effects is connected t…
Tabletop imaging of structural evolutions in chemical reactions
Heide Ibrahim, Benji Wales, Samuel Beaulieu +10
The introduction of femto-chemistry has made it a primary goal to follow the nuclear and electronic evolution of a molecule in time and space as it undergoes a chemical reaction. U…
Attosecond Magnetic Field Pulse Generation by Intense Few Cycle Circularly Polarized UV Pulses
Kai-Jun Yuan, Andre D. Bandrauk
Intense attosecond magnetic field pulses are predicted to be produced by intense few cycle circularly polarized UV pulses. Numerical solutions of the time dependent Schrödinger equ…
Quantum-classical correspondence in circularly polarized high harmonic generation
Francois Mauger, A. D. Bandrauk, Adam Kamor +2
Using numerical simulations, we show that atomic high order harmonic generation, HHG, with a circularly polarized laser field offers an ideal framework for quantum-classical corres…
Enhanced Schwinger's pair production in many-center systems
François Fillion-Gourdeau, Emmanuel Lorin, André D. Bandrauk
Electron-positron pair production is considered for many-center systems with multiple bare nuclei immersed in a constant electric field. It is shown that there are two distinct reg…
A Split-Step Numerical Method for the Time-Dependent Dirac Equation in 3-D Axisymmetric Geometry
François Fillion-Gourdeau, Emmanuel Lorin, André D. Bandrauk
A numerical method is developed to solve the time-dependent Dirac equation in cylindrical coordinates for 3-D axisymmetric systems. The time evolution is treated by a splitting sch…
Atoms and Molecules in Intense Laser Fields: Gauge Invariance of Theory and Models
André D. Bandrauk, François Fillion-Gourdeau, Emmanuel Lorin
Gauge invariance was discovered in the development of classical electromagnetism and was required when the latter was formulated in terms of the scalar and vector potentials. It is…
On the Saturation of the Nonlinear Refractive Index in Atomic Gases
Christian Köhler, Roland Guichard, Emmanuel Lorin +4
Motivated by the ongoing controversy on the origin of the nonlinear index saturation and subsequent intensity clamping in femtosecond filaments, we study the atomic nonlinear polar…
Resonantly enhanced pair production in a simple diatomic model
François Fillion-Gourdeau, Emmanuel Lorin, André D. Bandrauk
A new mechanism for the production of electron-positron pairs from the interaction of a laser field and a fully stripped diatomic molecule in the tunneling regime is presented. Whe…
Landau-Zener-Stückelberg interferometry in pair production from counterpropagating lasers
François Fillion-Gourdeau, Emmanuel Lorin, André D. Bandrauk
The rate of electron-positron pair production in linearly polarized counter-propagating lasers is evaluated from a recently discovered solution of the time-dependent Dirac equation…
Relativistic Stark resonances in a simple exactly soluble model for a diatomic molecule
Francois Fillion-Gourdeau, Emmanuel Lorin, Andre D. Bandrauk
A simple 1-D relativistic model for a diatomic molecule with a double point interaction potential is solved exactly in a constant electric field. The Weyl-Titchmarsh-Kodaira method…
Numerical solution of the time-independent Dirac equation for diatomic molecules: B-splines without spurious states
F. Fillion-Gourdeau, E. Lorin, A. D. Bandrauk
Two numerical methods are used to evaluate the relativistic spectrum of the two-centre Coulomb problem (for the and diatomic molecules) in the fixed nuc…
Numerical Solution of the Time-Dependent Dirac Equation in Coordinate Space without Fermion-Doubling
Francois Fillion-Gourdeau, Emmanuel Lorin, Andre D. Bandrauk
The validation and parallel implementation of a numerical method for the solution of the time-dependent Dirac equation is presented. This numerical method is based on a split opera…
Long-range Energy Transfer and Ionization in Extended Quantum Systems Driven by Ultrashort Spatially Shaped Laser Pulses
Guennaddi K. Paramonov, Andre D. Bandrauk, Oliver Kühn
The processes of ionization and energy transfer in a quantum system composed of two distant H atoms with an initial internuclear separation of 100 atomic units (5.29 nm) have been…
Energy transfer among distant quantum systems in spatially shaped laser fields: Two H atoms with the internuclear separation of 5.29 nm (100 a.u.)
Guennaddi K. Paramonov, Oliver Kühn, Andre D. Bandrauk
The quantum dynamics of two distant H atoms excited by ultrashort and spatially shaped laser pulses is studied by the numerical solution of the non-Born-Oppenheimer time-dependent…
Non-sequential double ionization below laser-intensity threshold: Anticorrelation of electrons without excitation of parent ion
D. I. Bondar, G. L. Yudin, W. -K. Liu +2
Two-electron correlated spectra of non-sequential double ionization below laser-intensity threshold are known to exhibit back-to-back scattering of the electrons, viz., the anticor…
Visualizing quantum entanglement and the EPR paradox during the photodissociation of a diatomic molecule using two ultrashort laser pulses
Szczepan Chelkowski, André D. Bandrauk
We investigate theoretically the dissociative ionization of a H2+ molecule using two ultrashort laser (pump-probe) pulses. The pump pulse prepares a dissociating nuclear wave packe…