A quasi-optical mode converter is investigated for a 170 GHz, TE/sub 34.19/ mode coaxial-cavity gyrotron, where the ratio of caustic to cavity radius is 0.323. The dimpled-wall launcher is numerically analysed and optimised to provide a wave beam with scalar Gaussian contents of 94.8% and well-focused field at its aperture. The mirror system is adapted to transform the complicated fields radiated from the launcher into a fundamental Gaussian structure. The tolerance conditions of the mirror system to fabrication errors are also investigated. The achieved conversion efficiency is 97% including amplitude and phase.


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    Titel :

    Investigation of an advanced quasi-optical mode converter for a coaxial gyrotron


    Beteiligte:
    Jin, J.B. (Autor:in) / Thumm, M. (Autor:in) / Rzesnicki, T. (Autor:in) / Piosczyk, B. (Autor:in) / Dammertz, G. (Autor:in)


    Erscheinungsdatum :

    2005-01-01


    Format / Umfang :

    1928203 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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