Open AccessHeat accumulation in metals under femtosecond irradiation: simulation and experimentation
Author(s) -
Cangueiro Liliana,
Bruneel David,
Kiedrowski Thomas,
Schroeder Nikolai,
Lasagni Andrés Fabián,
RamosdeCampos J. A.
Publication year - 2021
Publication title -
photonicsviews
Language(s) - English
Resource type - Journals
eISSN - 2626-1308
pISSN - 2626-1294
DOI - 10.1002/phvs.202100056
Subject(s) - fluence , surface micromachining , femtosecond , materials science , laser , thermal , irradiation , ultrashort pulse , surface (topology) , materials processing , mechanical engineering , optics , mechanics , process engineering , fabrication , engineering , thermodynamics , physics , medicine , alternative medicine , geometry , mathematics , pathology , nuclear physics
Ultrafast laser micromachining results depend on both the processing parameters and the material properties. The thermal effects are negligible if a good combination of processing parameters is chosen. However, optimizing the processing parameters to achieve the required surface quality on a given material can be quite complex and time consuming. Within the framework of the European LAMpAS project, we developed a model to estimate the heat accumulation on a surface as a function of the laser fluence, scanning speed and line pitch. The simulation results were correlated with experimental ones. The predictions of the model allow evaluation of the heat distribution on the surface, and optimize the ultrafast laser micromachining strategy, yielding negligible thermal damage.