Dynamics of relativistic vortex electrons in external laser fields

• URL: http://arxiv.org/abs/2408.02390v3
• Date: Sat, 09 Nov 2024 15:09:40 GMT
• Title: Dynamics of relativistic vortex electrons in external laser fields
• Authors: Mamutjan Ababekri, Yu Wang, Ren-Tong Guo, Zhong-Peng Li, Jian-Xing Li,
• Abstract summary: We systematically study the dynamics of vortex electrons during their head-on collisions with laser pulses. We develop a theoretical framework using Volkov-Bessel wave functions to describe the characteristics of vortex electrons in these external fields. This work serves as a benchmark reference for investigations into the manipulation of vortex electron beams using more realistic laser or other types of external fields.
• Score: 2.4924880547843307
• License:
• Abstract: Investigating the interactions of vortex electrons with electromagnetic fields is crucial for advancing particle acceleration techniques, scattering theory in background fields, and developing novel electron beams for material diagnostics. In this work, we systematically study the dynamics of relativistic vortex electrons during their head-on collisions with linearly polarized (LP) and circularly polarized (CP) laser pulses, as well as their superposition. We develop a theoretical framework using Volkov-Bessel wave functions to describe the spatiotemporal characteristics of vortex electrons in these external fields. We show that the beam center of the vortex electron follows the classical trajectory of a point-charge electron while maintaining the transverse structure of both vortex eigenstates and superposition states. Specifically, CP laser pulses cause the beam center to rotate, while LP laser pulses induce a lateral shift. The combined effect of LP and CP laser pulses in a two-mode field results in a twisted spiral pattern. Our findings demonstrate the potential for versatile control of vortex electron beams using various laser modes, providing a foundation for future experimental and theoretical studies. This work serves as a benchmark reference for investigations into the manipulation of vortex electron beams using more realistic laser or other types of external fields.

Related papers

• Bipolar Fabry-Pérot charge interferometer in periodically electron-irradiated graphene [36.136619420474766]
  We show a counterintuitive architecture employing intentionally-created lattice defects to induce coherent effects in the charge transport of graphene. The interference effects are both theoretically and experimentally investigated and manifest as sheet resistance oscillations up to 30 K for both polarities of charge carriers. Our findings propose defective graphene as an original platform for the realization of innovative coherent electronic devices with applications in nano and quantum technologies.
  arXiv  Detail & Related papers  (2024-09-07T15:37:23Z)
• Quantum pathways interference in laser-induced electron diffraction revealed by a semiclassical method [0.0]
  We develop a novel method for strong-laser-field physics based on the combination of the semiclassical Herman-Kluk propagator and the strong-field approximation. Our results can be used to extend current capabilities of the laser-induced electron diffraction and other ultrafast imaging and strong-field spectroscopic techniques.
  arXiv  Detail & Related papers  (2024-08-22T20:23:37Z)
• Generalized Gouy Rotation of Electron Vortex beams in uniform magnetic fields [54.010858975226945]
  We study the dynamics of EVBs in magnetic fields using exact solutions of the relativistic paraxial equation in magnetic fields. We provide a unified description of different regimes under generalized Gouy rotation, linking the Gouy phase to EVB rotation angles. This work offers new insights into the dynamics of EVBs in magnetic fields and suggests practical applications in beam manipulation and beam optics of vortex particles.
  arXiv  Detail & Related papers  (2024-07-03T03:29:56Z)
• Quantum control of ro-vibrational dynamics and application to light-induced molecular chirality [39.58317527488534]
  Achiral molecules can be made temporarily chiral by excitation with electric fields. We go beyond the assumption of molecular orientations to remain fixed during the excitation process.
  arXiv  Detail & Related papers  (2023-10-17T20:33:25Z)
• Spin Current Density Functional Theory of the Quantum Spin-Hall Phase [59.50307752165016]
  We apply the spin current density functional theory to the quantum spin-Hall phase. We show that the explicit account of spin currents in the electron-electron potential of the SCDFT is key to the appearance of a Dirac cone.
  arXiv  Detail & Related papers  (2022-08-29T20:46:26Z)
• Scattering of a twisted electron wavepacket by a finite laser pulse [0.0]
  The behavior of a twisted electron colliding with a linearly polarized laser pulse is investigated within relativistic quantum mechanics. It is shown that the motion of a twisted wavepacket can be accurately described by averaging over classical trajectories. Full quantum simulations demonstrate that the ring structure of the wavepacket in the transverse plane can be significantly distorted.
  arXiv  Detail & Related papers  (2022-05-31T20:44:32Z)
• Continuum-electron interferometry for enhancement of photoelectron circular dichroism and measurement of bound, free, and mixed contributions to chiral response [39.58317527488534]
  We develop photoelectron interferometry based on laser-assisted extreme ultraviolet ionization for flexible and robust control of photoelectron circular dichroism in randomly oriented chiral molecules. A comb of XUV photons ionizes a sample of chiral molecules in the presence of a time-delayed infrared or visible laser pulse promoting interferences between components of the XUV-ionized photoelectron wave packet.
  arXiv  Detail & Related papers  (2021-04-15T15:20:57Z)
• Electrons in intense laser fields with local phase, polarization, and skyrmionic textures [0.0]
  We derive expressions for the wave function of an unbound electron subject to a structured, intense laser field. It is also shown that photoelectrons can be accelerated or momentum when moving through a focused, intense laser field.
  arXiv  Detail & Related papers  (2020-11-25T11:52:44Z)
• Optical Modulation of Electron Beams in Free Space [0.0]
  We show that monochromatic optical fields focused in vacuum can be used to correct electron beam aberrations and produce selected focal shapes. The required light intensities are attainable in currently available ultrafast electron microscope setups.
  arXiv  Detail & Related papers  (2020-11-08T01:15:21Z)
• Relativistic electron spin dynamics in a strong unipolar laser field [0.0]
  We show proportionality between the change of the electron spin projections and the electric field area of the pulse. It is shown that the classical relativistic predictions are accurately reproduced when using the Foldy-Wouthuysen operator.
  arXiv  Detail & Related papers  (2020-05-06T14:10:09Z)
• Resonant high-energy bremsstrahlung of ultrarelativistic electrons in the field of a nucleus and a pulsed light wave [68.8204255655161]
  Research investigates the resonant high-energy spontaneous bremsstrahlung of ultrarelativistic electrons with considerable energies in the field of a nucleus and a quasimonochromatic laser wave.
  arXiv  Detail & Related papers  (2020-04-05T16:27:11Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.