Abstract
Laser cutting with multibeam diffraction pattern using an adaptive optics is studied. IR continuous single-mode fiber laser with maximum power of 200 W is applied, with liquid crystal on silicon spatial light modulator (Lcos-SLM), for laser cutting of thin metal sheets. SLM can be used as the adaptive diffractive optical element to modify laser beam profile almost arbitrary. In this paper it is shown that even simple intensity profiles of the cutting beam are enough to enhance the cutting. It was seen that by the spatially intensity modulating the single laser cutting spot into various spots it is possible to enhance the cutting quality and also decrease pressure of the needed assist gas. It was seen that amount of the burr can be decreased and burr free cuts can be made with less protection gas compared to single beam laser cutting.
| Original language | English |
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| Title of host publication | Doc. No IIW-I-1210-13 |
| Number of pages | 10 |
| Publication status | Published - 2013 |
| MoE publication type | Not Eligible |
| Event | 66th Annual Assembly & International Conference of the International Institute of Welding - Essen, Germany Duration: 11 Sep 2013 → 17 Sep 2013 |
Conference
| Conference | 66th Annual Assembly & International Conference of the International Institute of Welding |
|---|---|
| Country | Germany |
| City | Essen |
| Period | 11/09/13 → 17/09/13 |
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Keywords
- spatial light modulator
- computer generated hologram
- fiber laser
- laser cutting
Cite this
Kaakkunen, J. J. J., Laakso, P., & Kujanpää, V. (2013). Flexible multibeam laser cutting with fiber laser using spatial light modulator. In Doc. No IIW-I-1210-13