Radiation emission in laser-wakefields driven by structured laser pulses with OAM
Poster (konferens), 2017

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.

orbital angular momentum




Joana Martins

Chalmers, Fysik, Subatomär fysik och plasmafysik

Ricardo A. Fonseca

Jorge Vieira

3rd European Advanced Accelerator Concepts Workshop, 24-30 September 2017, La Biodola, Isola d'Elba, Italy




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