Magnetic-field effect in high-order above-threshold ionization

Abstract

We experimentally and theoretically investigate the influence of the magnetic component of an electromagnetic field on high-order above-threshold ionization of xenon atoms driven by ultrashort femtosecond laser pulses. The nondipole shift of the electron momentum distribution along the light-propagation direction for high energy electrons beyond the classical cutoff is found to be vastly different from that below the cutoff. A V-shape structure in the momentum dependence of the nondipole shift above the cutoff is identified for the first time. With the help of classical and quantum-orbit analysis, we show that large-angle rescattering of the electrons strongly alters the partitioning of the photon momentum between electron and ion. The sensitivity of the observed nondipole shift to the electronic structure of the target atom is confirmed by three-dimensional time-dependent Schrödinger equation simulations for different model potentials.

6 pages, 3 figures

References in corpus (17)

• Accurate retrieval of structural information from laser-induced photoelectron and high-harmonic spectra by few-cycle laser pulses
• Imaging an aligned polyatomic molecule with laser-induced electron diffraction
• Breakdown of the Dipole Approximation in Strong-Field Ionization
• Partitioning of the linear photon momentum in multiphoton ionization
• High-order above-threshold ionization: the uniform approximation and the effect of the binding potential
• Under-the-barrier dynamics in laser-induced relativistic tunneling
• Time Double-Slit Interference in Tunneling Ionization
• Magnetic fields alter tunneling in strong-field ionization
• The tunneling model of laser-induced ionization and its failure at low frequencies
• Theory of Subcycle Linear Momentum Transfer in Strong-Field Tunneling Ionization
• Sub-cycle time resolution of multi-photon momentum transfer in strong-field ionization
• Electric Nondipole Effect in Strong-Field Ionization
• Relativistic non-dipole effects in strong-field atomic ionization at moderate intensities
• Observation of Photoion Backward Emission in Photoionization of He and N2
• 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
• Recollision as a probe of magnetic field effects in non-sequential double ionization

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• Laser-assisted photoionization: beyond the dipole approximation
• Circular Dichroism in Multiphoton Ionization of Resonantly Excited Helium Ions near Channel Closing
• Relativistic analytical R-matrix (ARM) theory for strong-field ionization
• Comparison between Jacobi-Anger and saddle point methods to treat Above-threshold ionization
• Photoelectron combs in ionization: Influence of rescattering and nondipole effects