Breakdown of the Dipole Approximation in Strong-Field Ionization

Abstract

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 intensities on the order of 10${}^{13}$ W/cm${}^2$. Photoelectron momentum distributions were recorded by velocity map imaging and projected onto the beam propagation axis. We observe an increasing shift of the peak of this projection opposite to the beam propagation direction with increasing laser intensities. From a comparison with semi-classical simulations, we identify the combined action of the magnetic field of the laser pulse and the Coulomb potential as origin of our observations.

arXiv comment12 pages, 4 figures

References in corpus (11)

• Bright Coherent Ultrahigh Harmonics in the keV X-Ray Regime from Mid-Infrared Femtosecond Lasers
• Partitioning of the linear photon momentum in multiphoton ionization
• Classical collisional trajectories as the source of strong-field double ionization of helium in the knee regime
• Capture into Rydberg states and momentum distributions of ionized electrons
• Under-the-barrier dynamics in laser-induced relativistic tunneling
• Mid-infrared pulse generation via achromatic quasi-phase-matched OPCPA
• The tunneling model of laser-induced ionization and its failure at low frequencies
• Dynamics of multiply charged ions in intense laser fields
• Relativistic features and time delay of laser-induced tunnel-ionization
• Relativistic ionization-rescattering with tailored laser pulses
• Transferring the attoclock technique to velocity map imaging

Cited by in corpus (50)

• It is all about phases: ultrafast holographic photoelectron imaging
• Real-time solutions of coupled Ehrenfest-Maxwell-Pauli-Kohn-Sham equations: fundamentals, implementation, and nano-optical applications
• Magnetic fields alter tunneling in strong-field ionization
• Attoclock revisited on electron tunnelling time
• Theory of Subcycle Linear Momentum Transfer in Strong-Field Tunneling Ionization
• Sub-cycle time resolution of multi-photon momentum transfer in strong-field ionization
• Attosecond magnetization dynamics in non-magnetic materials driven by intense femtosecond lasers
• Enhanced Strong Interaction between Nanocavities and p-shell Excitons Beyond the Dipole Approximation
• Relativistic non-dipole effects in strong-field atomic ionization at moderate intensities
• Quantum Battles in Attoscience -- Tunnelling
• Observation of Photoion Backward Emission in Photoionization of He and N2
• Magnetic-field effect in high-order above-threshold ionization
• Coulomb Rescattering in Nondipole Interaction of Atoms with Intense Laser Fields
• Coulomb-corrected strong-field quantum trajectories beyond dipole approximation
• Nondipole effects in atomic dynamic interference
• Strong-field photoelectron holography beyond the electric dipole approximation: a semiclassical analysis
• Holographic interferences in strong-field ionization beyond the dipole approximation: The influence of the peak and focal volume averaged laser intensity
• Ultrafast Kapitza-Dirac effect
• Analytical approach to Coulomb focusing in strong field ionization
• Photoelectron spectra after multiphoton ionization of Li atoms in the one-photon Rabi-flopping regime
• Momentum partition between constituents of exotic atoms during laser induced tunneling ionization
• Recollision as a probe of magnetic field effects in non-sequential double ionization
• High harmonic interferometry of the Lorentz force in strong mid-infrared laser fields
• Nondipole effects in tunneling ionization by intense laser pulses
• Ultrafast electron localization and screening in a transition metal dichalcogenide
• Photon-momentum transfer in diatomic molecules: an ab initio study
• Longitudinal photoelectron momentum shifts induced by absorbing a single XUV photon in diatomic molecules
• The effect of electron-electron correlation on the attoclock experiment
• Nondipole Coulomb sub-barrier ionization dynamics and photon momentum sharing
• Non-dipole recollision-gated double ionization and observable effects
• Sub-cycle time-resolved nondipole dynamics in tunneling ionization
• Subcycle resolved strong-field tunneling ionization: Identification of magnetic dipole and electric quadrupole effects
• Propagation time and nondipole contributions to intraband high-harmonic generation
• Exploring laser-driven quantum phenomena from a time-frequency analysis perspective: A comprehensive study
• Characterization of Molecular Breakup by Very Intense Femtosecond XUV Laser Pulses
• Dissecting strong-field excitation dynamics with atomic-momentum spectroscopy
• Relativistic mask method for electron momentum distributions after ionization of hydrogen-like ions in strong laser fields
• Disappearance and reappearance of above-threshold-ionization peaks
• Signatures of magnetic field effects in non-sequential double ionization manifesting as back-scattering for molecules versus forward-scattering for atoms
• Controlling Magnetic and Electric Nondipole Effects with Synthesized Two Perpendicularly Propagating Laser Fields
• Strong field ionisation of Argon: Electron momentum spectra and nondipole effects
• Quantum-quasiclassical analysis of center-of-mass nonseparability in hydrogen atom stimulated by strong laser fields
• Beyond Electric-Dipole Treatment of Light-Matter Interactions in Materials: Nondipole Harmonic Generation in Bulk Si
• Subfemtosecond glory hologrammetry for vectorial optical waveform reconstruction
• Exploring Spin Symmetry-Breaking Effects for Static Field Ionization of Atoms: Is There an Analog to the Coulson-Fischer Point in Bond Dissociation?
• Relativistic analytical R-matrix (ARM) theory for strong-field ionization
• High Harmonic Generation with Orbital Angular Momentum Beams: Beyond-dipole Corrections
• Comparison between Jacobi-Anger and saddle point methods to treat Above-threshold ionization
• Nondipole photoelectron momentum shifts in strong-field ionization with mid-infrared laser pulses of long duration
• Increasing ion yield circular dichroism in femtosecond photoionisation using optimal control theory