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Investigation of the laser generated ablation plasma plume dynamics and plasma plume sound wave dynamics
Abstract
We investigated the dynamics of laser generated ablation plasma plume expanding in ambient air and dynamics of the sound wave generated by the expanding plasma. The ablation plasma plume was generated during nanosecond laser micromachining of the thin metal foil. The time-resolved images of the expanding plasma plume and sound wave were captured at several nanosecond intervals. Using captured images the expansion rate of the plasma plume was determined. The initial velocity of the plasma was found to vary from 6.0•103 m/s +/- 0.3•103 m/s to 7.3•103 m/s +/- 0.3•103 m/s depending on the laser fluence. The initial velocity of the sound wave generated by the expending plasma plume also varies with laser fluence. We also investigated sound wave using acoustic microphone. Based on obtained results we proposed a method for automatic focusing of the laser beam before laser micromachining that involves sound wave acoustic signal analysis.
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Authors (5)
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Mateusz Tański
- Instytut Maszyn Przepływowych PAN Ośrodek Techniki Plazmowej i Laserowej
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Robert Barbucha
- Instytut Maszyn Przepływowych PAN Ośrodek Techniki Plazmowej i Laserowej
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Marek Kocik
- Instytut Maszyn Przepływowych PAN Ośrodek Techniki Plazmowej i Laserowej
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Jerzy Mizeraczyk
- Instytut Maszyn Przepływowych PAN; Akademia Morska w Gdyni Ośrodek Techniki Plazmowej i Laserowej; Wydział Elektryczny
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Keywords
Details
- Category:
- Conference activity
- Type:
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Title of issue:
- SPIE Proceedings Vol. 8703, Laser Technology 2012: Applications of Lasers strony 1 - 7
- Language:
- English
- Publication year:
- 2012
- Bibliographic description:
- Tański M., Barbucha R., Kocik M., Garasz K., Mizeraczyk J.: Investigation of the laser generated ablation plasma plume dynamics and plasma plume sound wave dynamics// SPIE Proceedings Vol. 8703, Laser Technology 2012: Applications of Lasers/ : , 2012, s.1-7
- DOI:
- Digital Object Identifier (open in new tab) 10.1117/12.2013415
- Verified by:
- Gdańsk University of Technology
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