Full Content is available to subscribers

Subscribe/Learn More  >

Molecular Dynamics Simulation of Ultrafast Laser Ablation of Fused Silica

[+] Author Affiliations
Changrui Cheng, Xianfan Xu, Yaguo Wang, Alejandro Strachan

Purdue University

Paper No. IMECE2006-13768, pp. 517-518; 2 pages
  • ASME 2006 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Volume 2
  • Chicago, Illinois, USA, November 5 – 10, 2006
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-4785-3 | eISBN: 0-7918-3790-4
  • Copyright © 2006 by ASME


In recent decades, ultrafast lasers have been used successfully to micro-machine fused silica. The high intensity laser pulses first excite valence electrons to the conduction band via photoionization and avalanche ionization. The excited free electrons absorb laser energy, and transfer its energy to the ions, resulting in the temperature rise. This ionization leads to significant changes in Coulomb forces among the atoms. Both thermal and non-thermal (Coulomb explosion) ablation processes have been discussed in the literature [1]. This work applies molecular dynamics technique to study the interaction between ultrafast laser pulses and fused silica and the resulting ablation. The main goal of this work is to investigate the ultrafast laser ablation process of fused silica, and to reveal the mechanisms leading to the material's removal. In this MD simulation, the equilibrium state of fused silica is first established at 300 K, and the laser heating and material removal processes are simulated. The ionization of the material and the energy coupling between the laser beam and free electrons and ions are considered. Thermal and non-thermal mechanisms of fused silica ablation are discussed based on calculation results.

Copyright © 2006 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In