Destruction of a solid film under the action of ultrashort laser pulse

  • S. I. Anisimov
  • V. V. Zhakhovskii
  • N. A. Inogamov
  • K. Nishihara
  • A. M. Oparin
  • Yu. V. Petrov
Plasma, Gases

Abstract

Molecular-dynamics (MD) simulation of the destruction of a crystal film heated by a femtosecond laser pulse was carried out. Heating is assumed to be instantaneous, because there is no time for the material to be displaced during the pulse. Film destruction is caused by the interaction of unloading waves. It can be considered as a model of a more complex process of splitting out of a thin surface layer from a massive target in the case where the layer remains solid after heating. It was found that the crystal order is broken due to the stretching strains and to the strong anisotropy of residual stress, resulting in a bipartition of the layer separating from the target. The lattice stretching and the formation of anisotropic stresses are due to the expansion of a heated lattice.

PACS numbers

61.80.Ba 68.60.Dv 79.20.Ds 81.40.Vw 

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Copyright information

© MAIK "Nauka/Interperiodica" 2003

Authors and Affiliations

  • S. I. Anisimov
    • 1
  • V. V. Zhakhovskii
    • 2
    • 3
  • N. A. Inogamov
    • 1
  • K. Nishihara
    • 3
  • A. M. Oparin
    • 4
  • Yu. V. Petrov
    • 1
  1. 1.Landau Institute for Theoretical PhysicsRussian Academy of SciencesChernogolovka, Moscow regionRussia
  2. 2.Institute of High Temperatures Scientific Association (IVTAN)Russian Academy of SciencesMoscowRussia
  3. 3.Institute of Laser EngineeringOsaka UniversitySuita, OsakaJapan
  4. 4.Institute of Design AutomationRussian Academy of SciencesMoscowRussia

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