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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 3, Iss. 1 — Jan. 10, 2005
  • pp: 57–59

Femtosecond laser ablation of metals: a molecular dynamics simulation study

Xuan Liu and Yang Wang  »View Author Affiliations


Chinese Optics Letters, Vol. 3, Issue 1, pp. 57-59 (2005)


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Abstract

Using molecular dynamics (MD) methods combining with two-step radiation heating model, the mechanisms of ablation and the thermodynamic states at Ni surface under femtosecond laser irradiation are investigated. Simulation results show that the main mechanisms of ablation are evaporation and tensile stresses generated inside the target. The velocity of stress wave is predicted to be nearly equal to sound velocity. The rates of ablation at different fluences obtained from simulations are in good agreement with experimental data. Superheating phenomenon is also discovered.

© 2005 Chinese Optics Letters

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(140.7090) Lasers and laser optics : Ultrafast lasers
(310.3840) Thin films : Materials and process characterization

Citation
Xuan Liu and Yang Wang, "Femtosecond laser ablation of metals: a molecular dynamics simulation study," Chin. Opt. Lett. 3, 57-59 (2005)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-3-1-57


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