A finite element model to predict the ablation depth in pulsed laser ablation

This work presents development of a two-dimensional finite element model to predict temperature distribution and ablation depth in a laser ablation process. The model considers a number of aspects of the process, which hitherto have been considered independently in the literature. The aspects consid...

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Bibliographic Details
Published in:Thin solid films 2010-12, Vol.519 (4), p.1421-1430
Main Authors: Vasantgadkar, Nikhil A., Bhandarkar, Upendra V., Joshi, Suhas S.
Format: Article
Language:English
Subjects:
Ablation
Ablation depth
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Finite element analysis
Finite element method
Laser ablation
Laser deposition
Lasers
Materials science
Mathematical analysis
Mathematical models
Methods of deposition of films and coatings
film growth and epitaxy
Physics
Plasma shielding
Pulsed laser ablation
Pulsed lasers
Surface temperature
Thin films
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Summary:This work presents development of a two-dimensional finite element model to predict temperature distribution and ablation depth in a laser ablation process. The model considers a number of aspects of the process, which hitherto have been considered independently in the literature. The aspects considered include: temperature dependent material properties of the target material, effect of plasma shielding on the incident laser flux, and temperature dependent absorptivity and absorption coefficient of the target. It was evident that these considerations have resulted in a significant improvement in the ability of the model to predict the ablation depth. Finally, the predicted ablation depth was found to match extremely well with experimental results at lower laser fluences, though at higher fluences there is a marginal overestimation.
ISSN:0040-6090
1879-2731
DOI:10.1016/j.tsf.2010.09.016