Electrostatic mechanism of ablation by femtosecond lasers

E. G. Gamaly; A. V. Rode; V. T. Tikhonchuk; B. Luther-Davies

doi:10.1016/S0169-4332(02)00396-3

Electrostatic mechanism of ablation by femtosecond lasers

E. G. Gamaly^*, A. V. Rode, V. T. Tikhonchuk, B. Luther-Davies

^*Corresponding author for this work

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

47 Citations (Scopus)

Abstract

The mechanism of ablation of solids by intense femtosecond laser pulses is described in an explicit analytical form. It is shown that at high intensities when the ionization of the target material is complete before the end of the pulse, the ablation mechanism is the same for both metals and dielectrics. The physics of this new ablation regime involves ion acceleration in the electrostatic field caused by charge separation created by energetic electrons escaping from the target. The formulae for ablation thresholds and ablation rates for metals and dielectrics, combining the laser and target parameters, are derived and compared to experimental data. The calculated dependence of the ablation thresholds on the pulse duration is in agreement with the experimental data in a femtosecond range, and it is linked to the dependence for nanosecond pulses.

Original language	English
Pages (from-to)	699-704
Number of pages	6
Journal	Applied Surface Science
Volume	197-198
DOIs	https://doi.org/10.1016/S0169-4332(02)00396-3
Publication status	Published - 2002
Event	Cola 2001 - Tsukuba, Japan Duration: 1 Oct 2001 → 1 Oct 2001

Access to Document

10.1016/S0169-4332(02)00396-3

Cite this

@article{c9331dddf7d74c6291931e08f8866229,

title = "Electrostatic mechanism of ablation by femtosecond lasers",

abstract = "The mechanism of ablation of solids by intense femtosecond laser pulses is described in an explicit analytical form. It is shown that at high intensities when the ionization of the target material is complete before the end of the pulse, the ablation mechanism is the same for both metals and dielectrics. The physics of this new ablation regime involves ion acceleration in the electrostatic field caused by charge separation created by energetic electrons escaping from the target. The formulae for ablation thresholds and ablation rates for metals and dielectrics, combining the laser and target parameters, are derived and compared to experimental data. The calculated dependence of the ablation thresholds on the pulse duration is in agreement with the experimental data in a femtosecond range, and it is linked to the dependence for nanosecond pulses.",

keywords = "Ablation mechanism, Femtosecond lasers, Transient skin effect",

author = "Gamaly, {E. G.} and Rode, {A. V.} and Tikhonchuk, {V. T.} and B. Luther-Davies",

year = "2002",

doi = "10.1016/S0169-4332(02)00396-3",

language = "English",

volume = "197-198",

pages = "699--704",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

note = "Cola 2001 ; Conference date: 01-10-2001 Through 01-10-2001",

}

TY - JOUR

T1 - Electrostatic mechanism of ablation by femtosecond lasers

AU - Gamaly, E. G.

AU - Rode, A. V.

AU - Tikhonchuk, V. T.

AU - Luther-Davies, B.

PY - 2002

Y1 - 2002

N2 - The mechanism of ablation of solids by intense femtosecond laser pulses is described in an explicit analytical form. It is shown that at high intensities when the ionization of the target material is complete before the end of the pulse, the ablation mechanism is the same for both metals and dielectrics. The physics of this new ablation regime involves ion acceleration in the electrostatic field caused by charge separation created by energetic electrons escaping from the target. The formulae for ablation thresholds and ablation rates for metals and dielectrics, combining the laser and target parameters, are derived and compared to experimental data. The calculated dependence of the ablation thresholds on the pulse duration is in agreement with the experimental data in a femtosecond range, and it is linked to the dependence for nanosecond pulses.

AB - The mechanism of ablation of solids by intense femtosecond laser pulses is described in an explicit analytical form. It is shown that at high intensities when the ionization of the target material is complete before the end of the pulse, the ablation mechanism is the same for both metals and dielectrics. The physics of this new ablation regime involves ion acceleration in the electrostatic field caused by charge separation created by energetic electrons escaping from the target. The formulae for ablation thresholds and ablation rates for metals and dielectrics, combining the laser and target parameters, are derived and compared to experimental data. The calculated dependence of the ablation thresholds on the pulse duration is in agreement with the experimental data in a femtosecond range, and it is linked to the dependence for nanosecond pulses.

KW - Ablation mechanism

KW - Femtosecond lasers

KW - Transient skin effect

UR - http://www.scopus.com/inward/record.url?scp=17144447625&partnerID=8YFLogxK

U2 - 10.1016/S0169-4332(02)00396-3

DO - 10.1016/S0169-4332(02)00396-3

M3 - Conference article

SN - 0169-4332

VL - 197-198

SP - 699

EP - 704

JO - Applied Surface Science

JF - Applied Surface Science

T2 - Cola 2001

Y2 - 1 October 2001 through 1 October 2001

ER -

Electrostatic mechanism of ablation by femtosecond lasers

Abstract

Access to Document

Other files and links

Fingerprint

Cite this