247 citations · 765 across the 15 of their papers we have counts for
6 papers · 1 filter
Optical control of the topology of laser-plasma accelerators
J. Vieira, J. T. Mendonça, F. Quéré
We propose a twisted plasma accelerator capable of generating relativistic electron vortex beams with helical current profiles. The angular momentum of these vortex bunches is quan…
Electron trapping in freely expanding ultracold neutral plasmas
R. Ayllon, H. Terças, J. T. Mendonça
We report on the self-induced electron trapping occurring in a ultracold neutral plasma that is set to expand freely. At the early stages of the plasma, the ions are not thermalize…
Coherent -pulse emitted by a dense relativistic cold electron beam
J. A. Arteaga, L. F. Monteiro, A. Serbeto +2
Starting from a three-wave interaction system of equations for free-electron lasers in the framework of a quantum fluid model, we show that these equations satisfy the Sine-Gordon…
High orbital angular momentum harmonic generation
J. Vieira, R. M. G. M. Trines, E. P. Alves +5
We identify and explore a high orbital angular momentum (OAM) harmonics generation and amplification mechanism that manipulates the OAM independently of any other laser property, b…
Nonlinear laser driven donut wakefields for positron and electron acceleration
J. Vieira, J. T. Mendonça
We show analytically and through three-dimensional particle-in-cell simulations that non-linear wakefields driven by Laguerre-Gaussian laser pulses can lead to hollow electron self…
Stimulated Raman and Brillouin backscattering of collimated beams carrying orbital angular momentum
J. T. Mendonça, B. Thidé, H. Then
We study theoretically the exchange of angular momentum between electromagnetic and electrostatic waves in a plasma, due to the stimulated Raman and Brillouin backscattering proces…