8 February 2012 Direct diode lasers with comparable beam quality to fiber, CO2, and solid state lasers
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TeraDiode has produced kW-class ultra-high brightness fiber-coupled direct diode lasers. A fiber-coupled direct diode laser with a power level of 2,040 W from a 50 μm core diameter, 0.15 numerical aperture (NA) output fiber at a single center wavelength was demonstrated. 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 3.75 mm-mrad and is the lowest BPP kW-class direct diode laser yet reported. This laser is suitable for industrial materials processing applications, including sheet metal cutting and welding. This 2-kW fiber-coupled direct diode laser has comparable brightness to that of industrial fiber lasers and CO2 lasers, and is over 10x brighter than state-of-the-art direct diode lasers.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robin K. Huang, Bien Chann, James Burgess, Michael Kaiman, Robert Overman, John D. Glenn, Parviz Tayebati, "Direct diode lasers with comparable beam quality to fiber, CO2, and solid state lasers", Proc. SPIE 8241, High-Power Diode Laser Technology and Applications X, 824102 (8 February 2012); doi: 10.1117/12.907161; https://doi.org/10.1117/12.907161


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