Theoretical modeling of the laser-solid-plasma interaction during UV laser ablation of metallic targets

Salvatore Amoruso

doi:10.1117/12.378162

25 February 2000 Theoretical modeling of the laser-solid-plasma interaction during UV laser ablation of metallic targets

Salvatore Amoruso

Author Affiliations +

Proceedings Volume 4070, ALT '99 International Conference on Advanced Laser Technologies; (2000) https://doi.org/10.1117/12.378162
Event: ALT'99 International Conference: Advanced Laser Technologies, 1999, Potenza-Lecce, Italy

Abstract

A model of laser-solid-plasma interaction taking into account vapor ionization and absorption mechanisms and laser induced plasma kinetics was developed. The laser-solid interaction has been modeled by using a thermal approach, and inverse bremsstrahlung and direct photo-ionization from excited neutrals have been considered for the absorption of the laser light. The model shows that the plasma parameters, which are increasing function of the fluence at moderate laser intensities, approach a plateau regime at high laser fluences. Model provisions show a quite good agreement with the experimental findings suggesting that laser-plasma interaction processes and plasma kinetics are of great importance in nanosecond laser ablation of metallic targets for power densities of the order of approximately 10⁹ Wcm².

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Salvatore Amoruso "Theoretical modeling of the laser-solid-plasma interaction during UV laser ablation of metallic targets", Proc. SPIE 4070, ALT '99 International Conference on Advanced Laser Technologies, (25 February 2000); https://doi.org/10.1117/12.378162

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