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Molecular dynamics simulation of ultrafast laser ablation of fused silica film

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Abstract

Ultrafast laser ablation of fused silica is studied using molecular dynamics simulations. Ionization and generation of free electrons, absorption of the laser energy by free electrons and energy coupling between free electrons and ions are considered. The BKS potential is applied and modified to describe molecular interactions and the effect of free electrons. Smooth particle mesh of the Ewald method (SPME) is adopted to calculate the Coulomb force. It is found that the electrostatic Coulomb force, which is caused by the ionization, plays an important role in the laser ablation process.

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Authors and Affiliations

  1. School of Mechanical Engineering, Purdue University, West Lafayette, IN, 47907, USA

    Y. Wang & X. Xu

  2. School of Computational Science, Florida State University, Tallahassee, FL, 32306, USA

    L. Zheng

Authors
  1. Y. Wang
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  2. X. Xu
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  3. L. Zheng
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Correspondence to X. Xu.

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Wang, Y., Xu, X. & Zheng, L. Molecular dynamics simulation of ultrafast laser ablation of fused silica film. Appl. Phys. A 92, 849–852 (2008). https://doi.org/10.1007/s00339-008-4579-y

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  • DOI: https://doi.org/10.1007/s00339-008-4579-y

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