Invited Paper Plasma Fluctuations During Laser Machining With cw-CO 2 -Lasers
- 22 September 1987
- proceedings article
- Published by SPIE-Intl Soc Optical Eng
- Vol. 0801, 178-185
- https://doi.org/10.1117/12.941239
Abstract
In different laser applications the laser induced plasma governs the process of energy coupling into the workpiece particularly in laser welding. Using a cw-0O2-laser, the plasma shows temporal and spatial fluctuations with typical frequencies. During these fluctuations the Plasma disappears completely for approximately 0.2 ms. Amongst other things it is demonstrated that there is a strong correlation between the plasma fluctuations and the dynamics of the molten metal.Keywords
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