Flexible multibeam laser cutting with fiber laser using spatial light modulator

Jarno J.J. Kaakkunen, Petri Laakso, Veli Kujanpää

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsProfessional

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 languageEnglish
Title of host publicationDoc. No IIW-I-1210-13
Number of pages10
Publication statusPublished - 2013
MoE publication typeNot Eligible
Event66th Annual Assembly & International Conference of the International Institute of Welding - Essen, Germany
Duration: 11 Sep 201317 Sep 2013

Conference

Conference66th Annual Assembly & International Conference of the International Institute of Welding
CountryGermany
CityEssen
Period11/09/1317/09/13

Fingerprint

laser cutting
light modulators
fiber lasers
metal sheets
profiles
adaptive optics
gases
diffraction patterns
liquid crystals
laser beams
silicon

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
Kaakkunen, Jarno J.J. ; Laakso, Petri ; Kujanpää, Veli. / Flexible multibeam laser cutting with fiber laser using spatial light modulator. Doc. No IIW-I-1210-13. 2013.
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title = "Flexible multibeam laser cutting with fiber laser using spatial light modulator",
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.",
keywords = "spatial light modulator, computer generated hologram, fiber laser, laser cutting",
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year = "2013",
language = "English",
booktitle = "Doc. No IIW-I-1210-13",

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Kaakkunen, JJJ, Laakso, P & Kujanpää, V 2013, Flexible multibeam laser cutting with fiber laser using spatial light modulator. in Doc. No IIW-I-1210-13. 66th Annual Assembly & International Conference of the International Institute of Welding, Essen, Germany, 11/09/13.

Flexible multibeam laser cutting with fiber laser using spatial light modulator. / Kaakkunen, Jarno J.J.; Laakso, Petri; Kujanpää, Veli.

Doc. No IIW-I-1210-13. 2013.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsProfessional

TY - GEN

T1 - Flexible multibeam laser cutting with fiber laser using spatial light modulator

AU - Kaakkunen, Jarno J.J.

AU - Laakso, Petri

AU - Kujanpää, Veli

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

KW - spatial light modulator

KW - computer generated hologram

KW - fiber laser

KW - laser cutting

M3 - Conference article in proceedings

BT - Doc. No IIW-I-1210-13

ER -

Kaakkunen JJJ, Laakso P, Kujanpää V. Flexible multibeam laser cutting with fiber laser using spatial light modulator. In Doc. No IIW-I-1210-13. 2013