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 journalArticle

33 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 - 2002
Externally publishedYes

Fingerprint

Diamond
Graphite
Ablation
ablation
Diamonds
pulse duration
graphite
diamonds
thresholds
Hamiltonians
Potential energy surfaces
Ultrashort pulses
Molecular dynamics
Laser pulses
Melting
potential energy
melting
molecular dynamics
damage
Lasers

Keywords

  • Dependence of thresholds
  • Pulse duration
  • Ultrafast ablation

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics

Cite this

Theoretical description of the ultrafast ablation of diamond and graphite : Dependence of thresholds on pulse duration. / Jeschke, Harald Olaf; Garcia, Martin E.

In: Applied Surface Science, Vol. 197-198, 2002, p. 107-113.

Research output: Contribution to journalArticle

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