A technique for coupling the radiation of a high-power diode laser bar into one multimode fiber with high efficiency, easy alignment requirements and low manufacturing costs is demonstrated using a single fiber with 400 micrometers core diameter. The principal item of the fiber-coupling system is a pair of micro step-mirrors--a novel design for beam shaping. The overall efficiency from diode-laser to fiber is 71% with 20 W cw laser power through the fiber. Polarization and wavelength multiplexing renders the system scaleable to higher output power which makes it highly suitable for material processing and pumping of lasers.


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    Title :

    Beam shaping and fiber coupling of high-power diode laser arrays


    Contributors:

    Conference:

    Lasers in Material Processing ; 1997 ; Munich,Germany


    Published in:

    Publication date :

    1997-08-18





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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