Göttingen 2025 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 4: AKBP Posters

AKBP 4.13: Poster

Dienstag, 1. April 2025, 16:30–18:00, ZHG Foyer 1. OG

Advanced Diagnostic Setup Combining Few-Cycle Shadowgraphy, Schlieren Imaging, and Interferometry for Laser Wakefield Acceleration Experiments — •Marc Osenberg, Paula Sedlatschek, Onur Bilen, Edgar Hartmann, Georg Pretzler, and Bernhard Hidding — Institute of Laser- and Plasmaphysics, Heinrich Heine University Düsseldorf

We present a comprehensive diagnostic setup for laser wakefield acceleration (LWFA) experiments, combining few-cycle pulse shadowgraphy with quantitative Schlieren imaging and interferometric phase shift measurements. This integrated approach enables precise visualization and quantification of refractive index gradients induced by the electron distribution in plasma wakefields generated by high-power laser pulses. The quantitative Schlieren method provides detailed mapping of refractive index variations, while the interferometric capability allows for accurate phase shift measurements to reconstruct plasma density profiles and electric field distributions. By leveraging advanced optical setups and image processing algorithms, the system achieves high spatial and temporal resolution, facilitating in-depth analysis of wakefield dynamics, including amplitude, phase velocity, and electron distribution. The combined techniques provide significant insights into laser-plasma interactions, paving the way for enhanced performance in next-generation accelerator technologies.

Keywords: Shadowgraphy; Laserwakefield; Schlieren; Interferometry; ultrashort