Share Email Print
cover

Proceedings Paper

Innovations in high power fiber laser applications
Author(s): Eckhard Beyer; Achim Mahrle; Matthias Lütke; Jens Standfuss; Frank Brückner
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Diffraction-limited high power lasers represent a new generation of lasers for materials processing, characteristic traits of which are: smaller, cost-effective and processing "on the fly". Of utmost importance is the high beam quality of fiber lasers which enables us to reduce the size of the focusing head incl. scanning mirrors. The excellent beam quality of the fiber laser offers a lot of new applications. In the field of remote cutting and welding the beam quality is the key parameter. By reducing the size of the focusing head including the scanning mirrors we can reach scanning frequencies up to 1.5 kHz and in special configurations up to 4 kHz. By using these frequencies very thin and deep welding seams can be generated experienced so far with electron beam welding only. The excellent beam quality of the fiber laser offers a high potential for developing new applications from deep penetration welding to high speed cutting. Highly dynamic cutting systems with maximum speeds up to 300 m/min and accelerations up to 4 g reduce the cutting time for cutting complex 2D parts. However, due to the inertia of such systems the effective cutting speed is reduced in real applications. This is especially true if complex shapes or contours are cut. With the introduction of scanner-based remote cutting systems in the kilowatt range, the effective cutting speed on the contour can be dramatically increased. The presentation explains remote cutting of metal foils and sheets using high brightness single mode fiber lasers. The presentation will also show the effect of optical feedback during cutting and welding with the fiber laser, how those feedbacks could be reduced and how they have to be used to optimize the cutting or welding process.

Paper Details

Date Published: 15 February 2012
PDF: 11 pages
Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 823717 (15 February 2012); doi: 10.1117/12.910899
Show Author Affiliations
Eckhard Beyer, Fraunhofer IWS Dresden (Germany)
Dresden Univ. of Technology (Germany)
Achim Mahrle, Dresden Univ. of Technology (Germany)
Matthias Lütke, Dresden Univ. of Technology (Germany)
Jens Standfuss, Fraunhofer IWS Dresden (Germany)
Frank Brückner, Fraunhofer IWS Dresden (Germany)


Published in SPIE Proceedings Vol. 8237:
Fiber Lasers IX: Technology, Systems, and Applications
Eric C. Honea; Sami T. Hendow, Editor(s)

© SPIE. Terms of Use
Back to Top