Ronan LAHAYE, UPX group: Laser Plasma Acceleration with Structured Light Fields

Laser plasma accelerators are a promising alternative to conventionnal accelerators due to the high amplitude of the accelerating fields generated in the plasma. To increase the interaction length and then the energy gain, we developped two new schemes of acceleration based on the use of an axiparabola. One was implemented successfully to adress the diffraction of the laser pulse in the plasma, and we have been developping another to adress the dephasing between the accelerated electron bunch and the laser pulse.