Controlling Magnetic and Electric Nondipole Effects with Synthesized Two Perpendicularly Propagating Laser Fields

Abstract

Nondipole effects are ubiquitous and crucial in light-matter interaction. However, they are too weak to be directly observed. In strong-field physics, motion of electrons is mainly confined in transverse plane of light fields, which suppresses the significance of nondipole effects. Here, we present a theoretical study on enhancing and controlling the nondipole effect by using the synthesized two perpendicularly propagating laser fields. We calculate the three-dimensional photoelectron momentum distributions of strong-field tunneling ionization of hydrogen atoms using the classical trajectory Monte Carlo model and show that the nondipole effects are noticeably enhanced in such laser fields due to their remarkable influences on the sub-cycle photoelectron dynamics. In particular, we reveal that the magnitudes of the magnetic and electric components of nondipole effects can be separately controlled by modulating the ellipticity and amplitude of driving laser fields. This novel scenario holds promising applications for future studies with ultrafast structured light fields.

arXiv comment14 pages, 4 figures, 49 references

References in corpus (16)

• Extremely high-intensity laser interactions with fundamental quantum systems
• Breakdown of the Dipole Approximation in Strong-Field Ionization
• Partitioning of the linear photon momentum in multiphoton ionization
• Under-the-barrier dynamics in laser-induced relativistic tunneling
• Magnetic fields alter tunneling in strong-field ionization
• Controlling Photon Transverse Orbital Angular Momentum in High Harmonic Generation
• 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
• Observation of Photoion Backward Emission in Photoionization of He and N2
• Magnetic-field effect in high-order above-threshold ionization
• Strong-field photoelectron holography beyond the electric dipole approximation: a semiclassical analysis
• Nondipole effects in tunneling ionization by intense laser pulses
• Photon-momentum transfer in diatomic molecules: an ab initio study
• Subcycle resolved strong-field tunneling ionization: Identification of magnetic dipole and electric quadrupole effects