In this paper we report a new approach for achieving robust single-mode operation in a large-core fibre laser or amplifier by employing a core, which has a helical trajectory within the cladding material. As a confirmation of the benefits of the helical-core geometry, an Yb-doped fibre with a straight core of the same diameter and numerical aperture was tested, which yielded a multimode output beam with beam propagation factor, M/sup 2/=5.5 and /spl sim/50% of the fibre output rejected from the polariser.


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    Titel :

    Helical-core Yb-doped fibre laser


    Beteiligte:
    Wang, P. (Autor:in) / Cooper, L.J. (Autor:in) / Clarkson, W.A. (Autor:in) / Nilsson, J. (Autor:in) / Williams, R.B. (Autor:in) / Sahu, J.K. (Autor:in) / Vogel, A.K. (Autor:in)


    Erscheinungsdatum :

    01.01.2003


    Format / Umfang :

    95720 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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