Hannover 2020 – scientific programme

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P: Fachverband Plasmaphysik

P 10: Poster Session 2

P 10.32: Poster

Tuesday, March 10, 2020, 16:30–18:30, Empore Lichthof

Construction of a Pre-Pulse Generator for Few-Cycle Laser Pulses — •Jonah Book, Steffen Mittelmann, and Georg Pretzler — Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität Düsseldorf

Here we report the design, setup and characterization of a pre-pulse generator for high-intensity few-cycle pulses. The difficulty in contrast to longer pulse durations is keeping the dispersion low for both pulses and at the same time preserving their beam quality. A pre-pulse generator offers a variety of valuable uses in laser-plasma-physics. When splitting a laser pulse into two pulses with differing intensities, one can be used to ignite a surface plasma which constitutes a target with adjustable properties for the other, stronger pulse, such that certain aspects of the interaction can be optimized, like plasma temperature, ionization state or harmonic generation. We present our new design together with the characterization of both pulses, most of all pulse duration and focus quality, as well as their temporal and spatial overlap.