Revisiting the interplay between ablation, collisional, and radiative processes during ns-laser ablation

A study of ns-laser ablation is presented, which focuses on the transient behavior of the physical processes that act in and above a copper sample. A dimensionless multiphase collisional radiative model describes the interplay between the ablation, collisional, and radiative mechanisms. Calculations...

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Bibliographic Details
Published in:Applied physics letters 2013-10, Vol.103 (17)
Main Authors: Autrique, D., Gornushkin, I., Alexiades, V., Chen, Z., Bogaerts, A., Rethfeld, B.
Format: Article
Language:English
Subjects:
ABLATION
BREAKDOWN
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COPPER
MATERIALS SCIENCE
NEODYMIUM LASERS
PULSES
TRANSIENTS
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Summary:A study of ns-laser ablation is presented, which focuses on the transient behavior of the physical processes that act in and above a copper sample. A dimensionless multiphase collisional radiative model describes the interplay between the ablation, collisional, and radiative mechanisms. Calculations are done for a 6 ns-Nd:YAG laser pulse operating at 532 nm and fluences up to 15 J/cm2. Temporal intensity profiles as well as transmissivities are in good agreement with experimental results. It is found that volumetric ablation mechanisms and photo-processes both play an essential role in the onset of ns-laser induced breakdown.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4826505