Femtosecond ultraviolet laser ablation of silver and comparison with nanosecond ablation
Citation:
[B. Toftmann, B. Doggett, C. Budtz-Jorgensen, J. Schou and J. G. Lunney, Femtosecond ultraviolet laser ablation of silver and comparison with nanosecond ablation, Journal of Applied Physics, 113, 2013, 083304 -1 7Download Item:
JApplPhys_113_083304.pdf (Published (publisher's copy) - Peer Reviewed) 1.267Mb
Abstract:
The ablation plume dynamics arising from ablation of silver with a 500 fs, 248nm laser at
2Jcm
2
has been studied using angle-resolved Langmuir ion probe and thin film deposition techniques. For
the same laser fluence, the time-of-flight ion signals from femtosecond and nanosecond laser ablation
are similar; both show a singly peaked time-of-flight distribution. The angular distribution of ion
emission and the deposition are well described by the adiabatic and isentropic model of plume
expansion, though distributions for femtosecond ablation are significantly narrower. In this laser
fluence regime, the energy efficiency of mass ablation is higher for femtosecond pulses than for
nanosecond pulses, but the ion production efficiency is lower.
Sponsor
Grant Number
European Commission
HPRI-CT-2001-00139
European Union (EU)
Author's Homepage:
http://people.tcd.ie/jlunneyDescription:
PUBLISHED
Author: LUNNEY, JAMES
Type of material:
Journal ArticleCollections:
Series/Report no:
Journal of Applied Physics113
Availability:
Full text availableKeywords:
ablation plume dynamicsDOI:
http://dx.doi.org/10.1063/1.4792033Licences: