21 February 2011 Ultra-high brightness wavelength-stabilized kW-class fiber coupled diode laser
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TeraDiode has produced a fiber-coupled direct diode laser with a power level of 1,040 W from a 200 μm core diameter, 0.18 numerical aperture (NA) output fiber at a single center wavelength. This was achieved with a novel beam combining and shaping technique using COTS diode lasers. The fiber-coupled output corresponds to a Beam Parameter Product (BPP) of 18 mm-mrad and is the lowest BPP kW-class direct diode laser yet reported. The laser has been used to demonstrate laser cutting and welding of steel sheet metal up to 6.65 mm thick. Further advances of these ultra-bright lasers are also projected.
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Robin K. Huang, Robin K. Huang, Bien Chann, Bien Chann, John D. Glenn, John D. Glenn, } "Ultra-high brightness wavelength-stabilized kW-class fiber coupled diode laser", Proc. SPIE 7918, High-Power Diode Laser Technology and Applications IX, 791810 (21 February 2011); doi: 10.1117/12.887259; https://doi.org/10.1117/12.887259

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