Journal
MATERIALS RESEARCH EXPRESS
Volume 5, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/aaa4e8
Keywords
femtosecond laser; pulsed laser ablation; two temperature model
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Funding
- Office of the Chancellor of the University of the Philippines Diliman, through the Office of the Vice Chancellor for Research and Development
- University of the Philippines, Office of the Vice - Chancellor for Research and Development (UPD-OVCRD)
- National Research Council of the Philippines [P-016]
- UP System Enhanced Creative Work and Research Grant [ECWRG 2015-1-014]
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We propose a numerical model to describe laser ablation of a copper target by a femtosecond laser pulse at an oblique angle of incidence. The model is based on the two temperature model and improved to include laser fluence, laser spot size, and dynamic changes in reflectivity of the target. Numerical results show that the electron and lattice temperatures decrease with the angle of incidence. The dependency of the maximum temperature with angle of incidence follow a cosine power law. The threshold laser fluence, ablation depth and crater size depend on the polarization and angle of the incident laser beam. Our model is supported by the experimental results reported by other group working in femtosecond pulsed laser ablation.
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