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

Harald O. Jeschke; Martin E. Garcia

doi:10.1016/S0169-4332(02)00312-4

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

Harald O. Jeschke, Martin E. Garcia

Research output: Contribution to journal › Conference article › peer-review

42 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 language	English
Pages (from-to)	107-113
Number of pages	7
Journal	Applied Surface Science
Volume	197-198
DOIs	https://doi.org/10.1016/S0169-4332(02)00312-4
Publication status	Published - 2002
Externally published	Yes
Event	Cola 2001 - Tsukuba, Japan Duration: Oct 1 2001 → Oct 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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10.1016/S0169-4332(02)00312-4

Cite this

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title = "Theoretical description of the ultrafast ablation of diamond and graphite: Dependence of thresholds on pulse duration",

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.",

keywords = "Dependence of thresholds, Pulse duration, Ultrafast ablation",

author = "Jeschke, {Harald O.} and Garcia, {Martin E.}",

note = "Funding Information: This work has been supported by the Deutsche Forschungsgemeinschaft through SFB 450. A part of the calculations was done on the CRAY T3E at Konrad-Zuse-Zentrum f{\"u}r Informationstechnik Berlin.; Cola 2001 ; Conference date: 01-10-2001 Through 01-10-2001",

year = "2002",

doi = "10.1016/S0169-4332(02)00312-4",

language = "English",

volume = "197-198",

pages = "107--113",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier",

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TY - JOUR

T1 - Theoretical description of the ultrafast ablation of diamond and graphite

T2 - Cola 2001

AU - Jeschke, Harald O.

AU - Garcia, Martin E.

N1 - Funding Information: This work has been supported by the Deutsche Forschungsgemeinschaft through SFB 450. A part of the calculations was done on the CRAY T3E at Konrad-Zuse-Zentrum für Informationstechnik Berlin.

PY - 2002

Y1 - 2002

N2 - 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.

AB - 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.

KW - Dependence of thresholds

KW - Pulse duration

KW - Ultrafast ablation

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UR - http://www.scopus.com/inward/citedby.url?scp=0036430250&partnerID=8YFLogxK

U2 - 10.1016/S0169-4332(02)00312-4

DO - 10.1016/S0169-4332(02)00312-4

M3 - Conference article

AN - SCOPUS:0036430250

SN - 0169-4332

VL - 197-198

SP - 107

EP - 113

JO - Applied Surface Science

JF - Applied Surface Science

Y2 - 1 October 2001 through 1 October 2001

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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