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Compact fibre-coupled high-power diode-laser unit

: Baumann, M.; Ehlers, B.; Quade, M.; Du, K.; Loosen, P.; Poprawe, R.; Treusch, H.G.

	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>

	English
	Conference Paper
	Fraunhofer ILT ()
	diode laser array; fibre-optic component; laser beam shaping; material processing; micro optics; optical system design; solid-state laser pumping

Abstract
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.

: http://publica.fraunhofer.de/documents/PX-8126.html