Erlangen 2026 – scientific programme
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P: Fachverband Plasmaphysik
P 24: Laser Plasmas
P 24.3: Talk
Friday, March 20, 2026, 11:30–11:45, KH 01.013
Optical probing of plasma dynamics in laser-driven nanostructured targets — Ankit Dulat1, Constantin Bernert1, Thomas Cowan1, Thomas Kluge1, Georg Korn2, Franziska Paschke-Brühl1,3, Daniel Rivas2, Hartmut Ruhl2, Marius Schollmeier2, Ulrich Schramm1,3, Karl Zeil1, •Tim Ziegler1, and more collaborators1,2,3 — 1Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany — 2Marvel Fusion GmbH, Munich, Germany — 3Technische Universität Dresden, Dresden, Germany
Nanostructured solid targets are of strong interest in high-intensity laser-plasma interactions because they enhance absorption and particle acceleration. However, experimentally accessing the relevant interaction dynamics remains challenging due to their ultrafast and nanoscale nature. In particular, laser pre-pulses can pre-ionize and expand the target, modifying the nanostructure and degrading performance, making these dynamics critical to resolve for reliable modeling and target optimization.
We present an optical pump-probe setup to study pre-plasma dynamics in the interaction of an ultrashort high-power laser with nanostructured targets. Using combined scattering and Doppler spectrometry, we measure target expansion and particle dynamics under different laser contrast conditions, providing insight into how nanostructure modification influences laser-plasma coupling and ion acceleration.
Keywords: laser-plasma accelerator; nanostructered targets; high energy density; optical probing