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Proceedings Article

4-kW fiber laser for metal cutting and welding

[+] Author Affiliations
Dahv A. V. Kliner, Kwang Chong, Justin Franke, Thomas Gordon, Jeff Gregg, Wolfgang Gries, Helen Hu, 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, Kyle Schneider, Jeff Segall, Katherine Shigeoka, Raman Srinivasan, Derek Tucker, Dirk Woll, David L. Woods, Hongbo Yu, Chris Zhang

JDSU (USA)

Hiroaki Ishiguro, Hiroshi Sako

Amada Co., Ltd. (Japan)

Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 791418 (February 21, 2011); doi:10.1117/12.877691
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From Conference Volume 7914

  • Fiber Lasers VIII: Technology, Systems, and Applications
  • Jay W. Dawson
  • San Francisco, California, USA | January 22, 2011

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.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Dahv A. V. Kliner ; Kwang Chong ; Justin Franke ; Thomas Gordon ; Jeff Gregg, et al.
"4-kW fiber laser for metal cutting and welding", Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 791418 (February 21, 2011); doi:10.1117/12.877691; http://dx.doi.org/10.1117/12.877691


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