May 5 – 10, 2019
Europe/Berlin timezone

Superluminal laser plasma acceleration

May 8, 2019, 4:00 PM
Main Hall (MedILS)

Main Hall



Mr Slava Smartsev (Weizmann Institute of Science)


Subluminal and superluminal light pulses have attracted a considerable attention in the past decades opening perspectives in telecommunications, optical storage, and fundamental physics. Usually achieved in matter, superluminal propagation has also been demonstrated in vacuum with quasi-Bessel beams or Spatio-Temporal Couplings (STCs). While in the first case the propagation was diffraction-free, but with hardly controllable pulse velocities and limited to moderate intensities, in the second a high tunability was achieved, yet with significantly lengthened pulse durations. Here, we report on a new concept that extends these approaches to relativistic intensities and ultra-short pulses by mixing STCs and quasi-Bessel beams to control independently the light velocity and intensity. When used to drive a Laser-Plasma Accelerator (LPA), this concept leads to a new regime, dephasing-free, where the electron beam energy gain increases by more than one order of magnitude.

Working group Laser-driven electron acceleration

Primary authors

C. Caizergues (LOA, ENSTA ParisTech, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris) Mr Slava Smartsev (Weizmann Institute of Science) Prof. Victor Malka (Weizmann Institute of Science and CNRS) Dr Cédric Thaury (Laboratoire d'Optique Appliquée)

Presentation materials