Simulation study demonstrates distinct ablation mechanisms across varying laser fluences in thin gold films, clarifying mechanical and thermodynamic removal thresholds.
The action of an ultrashort laser pulse on a thin gold film was studied using a single-speed nonequilibrium combined continuum-atomistic model, which was further developed in the work. Three ablation modes were studied: supercritical expansion, phase explosion and mechanical spallation. The simulation results are compared with experimental data. The dependence of the amount of removed substance on the fluence of laser radiation was obtained.
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Mazhukin et al. (2024) studied this question.
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