SMuK 2021 – scientific programme

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P: Fachverband Plasmaphysik

P 8: Laser Plasmas I

P 8.3: Talk

Wednesday, September 1, 2021, 14:45–15:00, H5

Multiparameter-controlled laser ionization of gases in the tunnel ionization regime — •Michael Stumpf and Georg Pretzler — Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität Düsseldorf

Within the scope of developing a Plasma Photocathode for Wakefield Acceleration of electrons we present a novel optical setup to ionize gases with controlled and modifiable ionization volume, number of electrons and initial energy. The reflection-based setup, called AMBER (Axicon Mirror Beam ExpandeR), allows the implementation into a fs-laser beamline without disturbing the spectral phase of the laser pulse. By changing the beam profile, pulse duration and pulse energy of the laser a desired ionization volume and state can be achieved. The dedicated ionization simulations are in good agreement with the gained experimental results which allows a precise prediction of laser-gas interactions.