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Proceedings Paper

4-kW fiber laser for metal cutting and welding
Author(s): Dahv A. V. Kliner; Kwang Chong; Justin Franke; Thomas Gordon; Jeff Gregg; Wolfgang Gries; Helen Hu; Hiroaki Ishiguro; Vincent Issier; Boris Kharlamov; Andrea Kliner; Masanao Kobayashi; Kai-Hsiu Liao; Juan Lugo; Johnny Luu; David Meng; James J. Morehead; Martin H. Muendel; Lawrence E. Myers; Kelvin Nguyen; Hiroshi Sako; Kyle Schneider; Jeff Segall; Katherine Shigeoka; Raman Srinivasan; Derek Tucker; Dirk Woll; David L. Woods; Hongbo Yu; Chris Zhang
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Paper Abstract

We have developed a commercial 4-kW fiber laser consisting of seven, 600-W modules whose outputs are combined with a fused-fiber combiner. The system architecture has several practical advantages, including pumping with reliable single-emitter diodes, monolithic fused-fiber construction (no free-space beams), and end pumping using a 91:1 pump combiner (eliminating the need for complex pump/signal combiners). Typical results at 4-kW output power are a beamparameter product of 2.6 mm-mrad, 8-hr power stability of < 0.5% rms, central wavelength of 1080 nm, and linewidth of 1.2 nm FWHM. These lasers have been incorporated into Amada machines used for cutting metal sheet and plate and have been used to cut aluminum, mild steel, stainless steel, brass, titanium, and copper with a thickness up to 19 mm. A world-record cutting speed of 62 m/min has been demonstrated for 1-mm aluminum sheet metal.

Paper Details

Date Published: 21 February 2011
PDF: 8 pages
Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 791418 (21 February 2011); doi: 10.1117/12.877691
Show Author Affiliations
Dahv A. V. Kliner, JDSU (United States)
Kwang Chong, JDSU (United States)
Justin Franke, JDSU (United States)
Thomas Gordon, JDSU (United States)
Jeff Gregg, JDSU (United States)
Wolfgang Gries, JDSU (United States)
Helen Hu, JDSU (United States)
Hiroaki Ishiguro, Amada Co., Ltd. (Japan)
Vincent Issier, JDSU (United States)
Boris Kharlamov, JDSU (United States)
Andrea Kliner, JDSU (United States)
Masanao Kobayashi, JDSU (United States)
Kai-Hsiu Liao, JDSU (United States)
Juan Lugo, JDSU (United States)
Johnny Luu, JDSU (United States)
David Meng, JDSU (United States)
James J. Morehead, JDSU (United States)
Martin H. Muendel, JDSU (United States)
Lawrence E. Myers, JDSU (United States)
Kelvin Nguyen, JDSU (United States)
Hiroshi Sako, Amada Co., Ltd. (Japan)
Kyle Schneider, JDSU (United States)
Jeff Segall, JDSU (United States)
Katherine Shigeoka, JDSU (United States)
Raman Srinivasan, JDSU (United States)
Derek Tucker, JDSU (United States)
Dirk Woll, JDSU (United States)
David L. Woods, JDSU (United States)
Hongbo Yu, JDSU (United States)
Chris Zhang, JDSU (United States)

Published in SPIE Proceedings Vol. 7914:
Fiber Lasers VIII: Technology, Systems, and Applications
Jay W. Dawson, Editor(s)

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