Thermo-elasto-plastic simulations of femtosecond laser-induced multiple-cavity in fused silica

The formation and the interaction of multiple cavities, induced by tightly focused femtosecond laser pulses, are studied by using a developed numerical tool, including the thermo-elasto-plastic material response. Simulations are performed in fused silica in cases of one, two, and four spots of laser...

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Bibliographic Details
Published in:arXiv.org 2017-10
Main Authors: Beuton, R, Chimier, B, Breil, J, Hébert, D, Mishchik, K, Lopez, J, Maire, P H, Duchateau, G
Format: Article
Language:English
Subjects:
Computer simulation
Cracks
Deposition
Femtosecond pulses
Fused silica
Holes
Laser beam heating
Lasers
Shock waves
Silicon dioxide
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Summary:The formation and the interaction of multiple cavities, induced by tightly focused femtosecond laser pulses, are studied by using a developed numerical tool, including the thermo-elasto-plastic material response. Simulations are performed in fused silica in cases of one, two, and four spots of laser energy deposition. The relaxation of the heated matter, launching shock waves in the surrounding cold material, leads to cavity formation and emergence of areas where cracks may be induced. Results show that the laser-induced structure shape depends on the energy deposition configuration and demonstrate the potential of the used numerical tool to obtain the desired designed structure or technological process.
ISSN:2331-8422
DOI:10.48550/arxiv.1710.08152