Improved compact 1 kW diode laser module emitting at 780 nm for the efficient direct additive manufacturing of aluminium
M. Wilkens1, S. Arslan1, M. Hübner1, L. Wittenbecher1, J. Zender1, B. Eppich1, D. Martin1, P. Della Casa1, A. Ginolas1, P.S. Basler1, N. Lobo-Ploch1, M. Rozycki2, A. Schulze2, U. Tradowsky3, A. Knaub3, H. Alder3 and P. Crump1
Published in:
Conf. on Lasers and Electro-Optics/Europe and European Quantum Electronics Conf. (CLEO/Europe-EQEC 2025), Munich, Germany, Jun. 23-27, ISBN: 979-8-3315-1252-1, cb-8-5 (2025).
Abstract:
Additive manufacturing (AM) of aluminium has become increasingly important, for example in mobility applications such as fabrication of ultra-low-weight vehicle bodies in the transport sector [1]. The use of a direct diode laser module emitting at wavelength λ = 780 nm has many advantages over established λ =10xx nm fibre or YAG-laser systems. First: a higher process efficiency due to the more than doubled absorption of aluminium at λ =780 nm. Second: a higher light generation efficiency by eliminating the pump step. And third: a higher process flexibility since light is generated directly at the process head and no high-power delivery fibre is needed.
1 Ferdinand-Braun-Institut (FBH), Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany
2 SKDK GmbH, Staakener Str. 16, 13581 Berlin, Germany
3 Photon Laser Manufacturing GmbH, Staakener Str. 53-63, 13581 Berlin, Germany
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