Interaction of relativistic electron-vortex beams with few-cycle laser pulses

• Verfasst von: Hayrapetyan, Armen [VerfasserIn]
• Verfasst von: Matula, Oliver [VerfasserIn]
• Verfasst von: Aiello, Andrea [VerfasserIn]
• Verfasst von: Surzhykov, Andrey [VerfasserIn]
• Verfasst von: Fritzsche, Stephan [VerfasserIn]
• Titel: Interaction of relativistic electron-vortex beams with few-cycle laser pulses
• Verf.angabe: Armen G. Hayrapetyan, Oliver Matula, Andrea Aiello, Andrey Surzhykov, and Stephan Fritzsche
• E-Jahr: 2014
• Jahr: 2 April 2014
• Fussnoten: Gesehen am 16.09.2020
• Titel Quelle: Enthalten in: Physical review letters
• Ort Quelle: College Park, Md. : APS, 1958
• Jahr Quelle: 2014
• Band/Heft Quelle: 112(2014,13) Artikel-Nummer 134801, 5 Seiten
• ISSN Quelle: 1079-7114
• DOI: doi:10.1103/PhysRevLett.112.134801
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1733155546

Abstract

We study the interaction of relativistic electron-vortex beams (EVBs) with laser light. Exact analytical solutions for this problem are obtained by employing the Dirac-Volkov wave functions to describe the (monoenergetic) distribution of the electrons in vortex beams with well-defined orbital angular momentum. Our new solutions explicitly show that the orbital angular momentum components of the laser field couple to the total angular momentum of the electrons. When the field is switched off, it is shown that the laser-driven EVB coincides with the field-free EVB as reported by Bliokh et al. [Phys. Rev. Lett. 107, 174802 (2011)]. Moreover, we calculate the probability density for finding an electron in the beam profile and demonstrate that the center of the beam is shifted with respect to the center of the field-free EVB.