Simultaneous sub second laser welding of polymers with diffractive optics

Petri Laakso, Saara Ruotsalainen, Tuomas Purtonen, Hannu Minkkinen, Veli Kujanpää, Antti Salminen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Abstract

The paper presents a novel method for simultaneous transmission welding of polymers using a high power multimode fiber laser. The method utilizes a diffractive optical element which shapes the focused laser beam into the desired weld shape. This kind of optical device enables the use of high power multimode fiber laser which again gives a possibility to use sub-second welding times.
Weld quality was assessed in terms of strength (pull test) and visual appearance. The diffractive optics provides an even powerd istribution and only small part of power is lost on the zeroth order.
Design of diffractive element gives flexibility with the weld shapes and sizes but the drawback is that these parameters cannot be modified after the production of the element. Using the optics would be more advantageous if multiple parts could be welded at one shot because the part changing time will be a lot longer than the welding time. Results show good weld quality, superior welding speed and high weld strength compared to quasi-simultaneous laser welding of the same material.
Original languageEnglish
Title of host publicationICALEO 2010: 29th International Congress on Applications of Lasers and Electro-Optics
Subtitle of host publicationAnaheim, CA, USA, 26-30 Sept. 2010
Place of PublicationOrlando, FL, USA
PublisherLaser Institute of America
Pages416-423
ISBN (Print)978-0-912035-61-1
DOIs
Publication statusPublished - 2010
MoE publication typeA4 Article in a conference publication

Publication series

Name
PublisherLaser Institute of America
Volume103

Fingerprint

Diffractive optics
Laser beam welding
Welds
Welding
Polymers
Multimode fibers
Fiber lasers
Diffractive optical elements
Optical devices
Laser beams
Optics

Keywords

  • Simultaneous welding
  • Fiber laser
  • diffractive optic

Cite this

Laakso, P., Ruotsalainen, S., Purtonen, T., Minkkinen, H., Kujanpää, V., & Salminen, A. (2010). Simultaneous sub second laser welding of polymers with diffractive optics. In ICALEO 2010: 29th International Congress on Applications of Lasers and Electro-Optics: Anaheim, CA, USA, 26-30 Sept. 2010 (pp. 416-423). Orlando, FL, USA: Laser Institute of America. https://doi.org/10.2351/1.5062059
Laakso, Petri ; Ruotsalainen, Saara ; Purtonen, Tuomas ; Minkkinen, Hannu ; Kujanpää, Veli ; Salminen, Antti. / Simultaneous sub second laser welding of polymers with diffractive optics. ICALEO 2010: 29th International Congress on Applications of Lasers and Electro-Optics: Anaheim, CA, USA, 26-30 Sept. 2010. Orlando, FL, USA : Laser Institute of America, 2010. pp. 416-423
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Laakso, P, Ruotsalainen, S, Purtonen, T, Minkkinen, H, Kujanpää, V & Salminen, A 2010, Simultaneous sub second laser welding of polymers with diffractive optics. in ICALEO 2010: 29th International Congress on Applications of Lasers and Electro-Optics: Anaheim, CA, USA, 26-30 Sept. 2010. Laser Institute of America, Orlando, FL, USA, pp. 416-423. https://doi.org/10.2351/1.5062059

Simultaneous sub second laser welding of polymers with diffractive optics. / Laakso, Petri; Ruotsalainen, Saara; Purtonen, Tuomas; Minkkinen, Hannu; Kujanpää, Veli; Salminen, Antti.

ICALEO 2010: 29th International Congress on Applications of Lasers and Electro-Optics: Anaheim, CA, USA, 26-30 Sept. 2010. Orlando, FL, USA : Laser Institute of America, 2010. p. 416-423.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AU - Kujanpää, Veli

AU - Salminen, Antti

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N2 - The paper presents a novel method for simultaneous transmission welding of polymers using a high power multimode fiber laser. The method utilizes a diffractive optical element which shapes the focused laser beam into the desired weld shape. This kind of optical device enables the use of high power multimode fiber laser which again gives a possibility to use sub-second welding times.Weld quality was assessed in terms of strength (pull test) and visual appearance. The diffractive optics provides an even powerd istribution and only small part of power is lost on the zeroth order.Design of diffractive element gives flexibility with the weld shapes and sizes but the drawback is that these parameters cannot be modified after the production of the element. Using the optics would be more advantageous if multiple parts could be welded at one shot because the part changing time will be a lot longer than the welding time. Results show good weld quality, superior welding speed and high weld strength compared to quasi-simultaneous laser welding of the same material.

AB - The paper presents a novel method for simultaneous transmission welding of polymers using a high power multimode fiber laser. The method utilizes a diffractive optical element which shapes the focused laser beam into the desired weld shape. This kind of optical device enables the use of high power multimode fiber laser which again gives a possibility to use sub-second welding times.Weld quality was assessed in terms of strength (pull test) and visual appearance. The diffractive optics provides an even powerd istribution and only small part of power is lost on the zeroth order.Design of diffractive element gives flexibility with the weld shapes and sizes but the drawback is that these parameters cannot be modified after the production of the element. Using the optics would be more advantageous if multiple parts could be welded at one shot because the part changing time will be a lot longer than the welding time. Results show good weld quality, superior welding speed and high weld strength compared to quasi-simultaneous laser welding of the same material.

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Laakso P, Ruotsalainen S, Purtonen T, Minkkinen H, Kujanpää V, Salminen A. Simultaneous sub second laser welding of polymers with diffractive optics. In ICALEO 2010: 29th International Congress on Applications of Lasers and Electro-Optics: Anaheim, CA, USA, 26-30 Sept. 2010. Orlando, FL, USA: Laser Institute of America. 2010. p. 416-423 https://doi.org/10.2351/1.5062059