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P: Fachverband Plasmaphysik
P 10: Poster Session I
P 10.30: Poster
Tuesday, April 1, 2025, 16:15–18:15, ZHG Foyer 1. OG
Characterization of Reflected Light Properties in PIC Simulations — •Vidisha Rana1,2, Milenko Vescovi1,2, Marvin E.P. Umlandt1,2, Franziska Paschke-Brühl1,2, Richard Pausch1, Pengjie Wang1, Tim Ziegler1,2, Karl Zeil1, Ulrich Schramm1,2, and Thomas Kluge1 — 1Helmholtz-Zentrum Dresden-Rossendorf — 2Technische Universität Dresden
Laser-driven ion accelerators offer several advantages over the conventional ones due to their potential of achieving high accelerating gradients over small distances. Recent experiments have demonstrated that one can achieve significantly high proton energies by modifying the temporal profile and controlling the spectral phase of laser pulses, specifically using Group Velocity Dispersion (GVD). However, the entire mechanism still needs to be understood.
Reflected light properties provide a powerful diagnostic tool for understanding these interactions and optimizing proton energies. Experiments involving high-intensity ultrashort laser pulses interacting with thin foils reveal prominent spectral shifts across changing Group Velocity Dispersion (GVD) values. These shifts can offer valuable insights into plasma dynamics, relativistic surface motion, and laser contrast effects, which have a direct impact on proton energies but remains difficult to interpret solely through experiments. This challenge can be addressed by employing PIC codes to simulate these interactions to analyze the underlying mechanisms. By bridging this gap, this work aims to advance our understanding of laser-plasma interactions.
Keywords: laser-plasma interaction; high intensity laser; ion acceleration; reflected light properties; Group Velocity Dispersion (GVD)