ATOMISTIC SIMULATION OF LASER ABLATION OF DIAMOND AND SILICON (111) SURFACE

C. Z. Wang () and K. M. Ho
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C. Z. Wang: Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
K. M. Ho: Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA

Surface Review and Letters (SRL), 1999, vol. 06, issue 06, 1025-1030

Abstract: Tight-binding molecular dynamics simulations are performed to study femtosecond-laser ablation of diamond and silicon (111) surface. The simulation results show that under intense ultrafast laser ablation the diamond (111) surface graphitizes while the silicon (111) surface melts spontaneously. All structural changes occur within a few hundred femtoseconds, which is much shorter than the typical lattice dynamics time scale, in consistent with experimental observations.

Date: 1999
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DOI: 10.1142/S0218625X99001104

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