Baumann, M.M.BaumannEhlers, B.B.EhlersQuade, M.M.QuadeDu, K.K.DuLoosen, P.P.LoosenPoprawe, R.R.PopraweTreusch, H.G.H.G.Treusch2022-03-092022-03-091997https://publica.fraunhofer.de/handle/publica/327996We developed a compact fibre-coupled high-power diode-laser unit with optical output power up to 40 W cw, coupled into a multimode fibre with 600 mu m core diameter and NA 0.22. This diode-laser unit is suitable for pumping solid-state or fibre lasers as well as for material processing. Essential part is a novel beam-shaping system with compact size, high flexibility and low alignment requirements, which uses a pair of micro step-mirrors. The whole unit fits into a housing of approximately 110 x 100 x 90 mm.endiode laser arrayfibre-optic componentlaser beam shapingmaterial processingmicro opticsoptical system designsolid-state laser pumping621conference paper