2025/02/19 by Joseph R. Smith, Smith, Joseph R., Ziyao Su +9
Materials Science · Biochemistry, Genetics and Molecular Biology · Engineering · #Silicon Nanostructures and Photoluminescence #Spectroscopy Techniques in Biomedical and Chemical Research #Laser-induced spectroscopy and plasma
paper · pdf · doi:10.48550/arxiv.2502.13695
We present a fully three-dimensional kinetic framework for modeling intense short pulse lasers interacting with dielectric materials. Our work modifies the open-source Particle-In-Cell (PIC) code EPOCH to include new models for molecular photoionization and dielectric optical response. We use this framework to model the laser-induced damage of dielectric materials by few-cycle laser pulses. The framework is benchmarked against experimental results for bulk silica targets and then applied to model multi-layer dielectric mirrors with a sequence of simulations with varying laser fluence. This allows us to better understand the laser damage process by providing new insight into energy absorption, excited particle dynamics, and nonthermal excited particle dist