Generation of ultra-relativistic monoenergetic electron bunches via a synergistic interaction of longitudinal electric and magnetic fields of a twisted laser

Abstract

We use 3D simulations to demonstrate that high-quality ultra-relativistic electron bunches can be generated upon reflection of a twisted laser beam off a plasma mirror. The unique topology of the beam with a twist index $|l|=1$ creates an accelerating structure dominated by longitudinal laser electric and magnetic fields in the near-axis region. We show that the magnetic field is essential for creating a train of dense mono-energetic bunches. For a 6.8~PW laser, the energy reaches 1.6~GeV with a spread of 5.5\%. The bunch duration is 320 as, its charge is 60~pC and density is $\sim 10^{27}$~m${}^{-3}$. The results are confirmed by an analytical model for the electron energy gain. These results enable development of novel laser-driven accelerators at multi-PW laser facilities.

References in corpus (5)

• Generation of Intense High-Order Vortex Harmonics
• Light fan driven by relativistic laser pulse
• Generation and Characterization of Attosecond Micro-Bunched Electron Pulse Trains via Dielectric Laser Acceleration
• High orbital angular momentum harmonic generation
• Relativistic acceleration of electrons injected by a plasma mirror into a radially polarized laser beam

Cited by in corpus (5)

• Advances in laser-plasma interactions using intense vortex laser beams
• Electron Acceleration Using Twisted Laser Wavefronts
• Analytical theory of coherent radiation and radiation friction in laser-plasma collisions
• Coherently enhanced radiation friction in laser-plasma collisions
• High-charge relativistic electrons by vacuum laser acceleration from plasma mirrors using flying focus pulses