Authors: F Bonneau P Combis JL Rullier J Vierne B Bertussi M Commandré L Gallais JY Natoli I Bertron F Malaise JT Donohue
Publish Date: 2004/02/01
Volume: 78, Issue: 3-4, Pages: 447-452
Abstract
We have performed simulations of laser energy deposition in an engineered absorbing defect ie metal nanoparticle and the surrounding fused silica taking into account various mechanisms for the defectinduced absorption of laser energy by SiO2 Then to simulate the damage process in its entirety we have interfaced these calculations of the energy absorption with a 2D Lagrange–Euler hydrodynamics code which can simulate crack formation and propagation leading to craters The validation of numerical simulations requires detailed knowledge of the different parameters involved in the interaction To concentrate on a simple situation we have made and tested a thinfilm system based on calibrated gold nanoparticles 600nm diameter inserted between two silica layers Some aspects of our simulations are then compared with our experimental results We find reasonable agreement between the observed and simulated crater sizes
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