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    Analysis of standing waves in millimetre-wave optics


    Whale, Mark and Trappe, Neil and Murphy, J.Anthony and Withington, Stafford (2007) Analysis of standing waves in millimetre-wave optics. In: 2007 Joint 32nd International Conference on Infrared and Millimeter Waves and the 15th International Conference on Terahertz Electronics. IEEE. ISBN 9781424414383

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    Abstract

    In this paper, we expand a theoretical framework for modelling standing waves in millimeter/submillimetre optical systems. Standing waves or multiple reflections have been traditionally difficult to model but this analytical method proves to be very versatile in dealing with reflections between typical quasioptical components such as lenses, apertures and mirrors. Using a full multi moded description of the feed horn (typically a corrugate horn), which is then transformed to equivalent free space Gaussian modes, a full mode matching scattering matrix approach is utilized to analyze any optical path/element, in which track is kept of both the backward and forward propagating components of the fields. We present an analysis of the reflected power from complicated cascaded optical apertures in a situation similar to a stray light baffle. Interesting constructive and destructive interference conditions can be observed from these structures and can be uniquely modelled with the presented theoretical technique.

    Item Type: Book Section
    Additional Information: The author of this paper would like to acknowledge the financial support of Science Foundation Ireland (SFI) through a Research Frontiers Grant for this research.
    Keywords: Gaussian beam mode analysis; scattering matrix; quasioptical system; standing waves;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 9857
    Identification Number: https://doi.org/10.1109/ICIMW.2007.4516742
    Depositing User: Dr. Neil Trappe
    Date Deposited: 31 Aug 2018 14:02
    Publisher: IEEE
    Refereed: Yes
    Funders: Science Foundation Ireland (SFI)
    URI:

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