Speaker
Ms
Joana Martins
(Department of Physics, Chalmers University of Technology, 41296 Gothenburg, Sweden; GoLP/IPFN, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal)
Description
Betatron radiation from laser-wakefield accelerators (LWFA) has shown great potential as a source of high brightness ultra-short radiation. In typical experimental and simulation LWFA setups, the driver is a single laser pulse with a Gaussian profile. However, the recent advances in the field of structured light, in particular in the study and production of light pulses with orbital angular momentum, for example Laguerre-Gaussian modes, has opened new prospects for laser-wakefield acceleration.
In this work, we explore LWFA driven by structured pulses comprised of Laguerre-Gaussian modes. We show that by using pairs of Laguerre-Gaussian modes, multiple wakefields can be driven with non-trivial dynamics. We investigate the possibility of driving pairs of wakefields rotating around the propagation axis though three-dimensional particle-in-cell simulations. Using a post-processing radiation diagnostic and the trajectories of bunch electrons taken from simulations, we examine the properties of the emitted radiation taking into account coherence effects.
Primary author
Ms
Joana Martins
(Department of Physics, Chalmers University of Technology, 41296 Gothenburg, Sweden; GoLP/IPFN, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal)
Co-authors
Dr
Jorge Vieira
(Instituto Superior Tecnico)
Prof.
Ricardo Fonseca
(ISCTE - IUL)
