Theoretical description of the ultrafast ablation of diamond and graphite: Dependence of thresholds on pulse duration

Harald Olaf Jeschke, Martin E. Garcia

Research output: Contribution to journalConference articlepeer-review

34 Citations (Scopus)

Abstract

A theoretical description of the ultrafast ablation of diamond and graphite is presented. Laser induced lattice deformations and melting are described with the help of molecular dynamics simulations on time dependent potential energy surfaces derived from a microscopic electronic Hamiltonian. Thermalization effects are explicitly taken into account. We calculate the ablation thresholds as a function of the pulse duration for femtosecond pulses. For both materials we obtain smoothly increasing thresholds for increasing duration. The damage and ablation mechanisms are discussed.

Original languageEnglish
Pages (from-to)107-113
Number of pages7
JournalApplied Surface Science
Volume197-198
DOIs
Publication statusPublished - Jan 1 2002
Externally publishedYes
EventCola 2001 - Tsukuba, Japan
Duration: Oct 1 2001Oct 1 2001

Keywords

  • Dependence of thresholds
  • Pulse duration
  • Ultrafast ablation

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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