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1 April 2022 Study of femtosecond laser-induced shockwaves in air
Olga Koritsoglou, Didier Loison, Olivier Uteza, David Grojo, Olivier Thomine, Alexandros Mouskeftaras
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Proceedings Volume PC11991, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXII; PC119910G (2022) https://doi.org/10.1117/12.2608983
Event: SPIE LASE, 2022, San Francisco, California, United States
Abstract
In this study, we investigate the conversion of femtosecond laser energy deposition from plasma into a shockwave in ambient air. The experiments are carried out using a 380fs pulsed laser at 1.03μm, with laser intensities below the filamentation threshold. The measurements of this dynamic phenomenon are carried out with the help of a time-resolved transmission microscope, and the pressure and temperature space-time evolution are evaluated using a theoretical model. In our conditions we generate shockwaves with initial pressure loading in the range of GPa and maximum propagation velocity in the order of a few km/s.
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Olga Koritsoglou, Didier Loison, Olivier Uteza, David Grojo, Olivier Thomine, and Alexandros Mouskeftaras "Study of femtosecond laser-induced shockwaves in air", Proc. SPIE PC11991, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXII, PC119910G (1 April 2022); https://doi.org/10.1117/12.2608983
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KEYWORDS
Femtosecond phenomena
Laser energy
Plasma
Laser processing
Pulsed laser operation
Semiconductor lasers
Silicon
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