Numerical simulation study of multi-pulsed femtosecond laser ablation on aluminum

• Luis Omeñaca ^[1] ; Mikel Gómez ^[1] ; Isabel Ayerdi ^[1] ; Enrique Castaño ^[1]
  1. [1] Universidad de Navarra

     Universidad de Navarra

     Pamplona, España

     
• Localización: Conectando la academia y la industria: Libro de actas OPTOEL 2023 / coord. por Alejandro Carballar Rincón, María del Rosario Fernández Ruiz, 2024
• Idioma: inglés
• Enlaces
  • Texto Completo Libro
• Resumen

  • The growing demand for miniaturized devices at micro- and nano-scales has led to a surge in interest in ultrafast laser material processing. During ultrafast laser interaction with metal, the electrons and the lattice are not in equilibrium. A two-temperature model is developed using finite element method to investigate both temperatures evolution. Simulated ablation craters irradiated by single- and multi-pulse are acquired, from which we can predict crater depth and radius before ablation takes place. Additionally, the evolution of temperatures between pulses is also studied, this analysis is of significant importance for understanding the thermal effects of multi-pulse irradiation. The simulated values are compared with experimental measurements reported in the literature.