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Compact fibre-coupled high-power diode-laser unit


Beckmann, L.H.J.F. ; European Optical Society -EOS-:
Lasers in material processing
Bellingham, Wash.: SPIE, 1997 (Europto series)
ISBN: 0-8194-2517-6
pp.712-716 : Ill., Lit.
Conference on Lasers in Material Processing <1997, München>
Conference Paper
Fraunhofer ILT ()
diode laser array; fibre-optic component; laser beam shaping; material processing; micro optics; optical system design; solid-state laser pumping

We 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.