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    Analysis and Optical Characterisation of Bolometric Integrating Cavities Including a Free Space Gap in the Waveguide Structure


    McCarthy, Darragh and Trappe, Neil and Doherty, Stephen and Murphy, J.Anthony and Bracken, Colm and Gradziel, Marcin and O'Sullivan, Créidhe and van der Vorst, M. and Audley, Michael D. and de Lange, G. (2015) Analysis and Optical Characterisation of Bolometric Integrating Cavities Including a Free Space Gap in the Waveguide Structure. In: 2015 9th European Conference on Antennas and Propagation (EuCAP). IEEE, pp. 1-5. ISBN 9788890701856

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    Abstract

    Bolometric integrating cavities have been used with great success in previous far-infrared space missions, and are planned for extensive use in future missions where ever increasing sensitivity is required. It is critical for the purposes of design and the interpretation of results that these systems are thoroughly understood and optically characterised fully. Such systems, for manufacturing and mechanical reasons, may contain free space gaps between the feed horn antenna and the integrating cavity, and so it is necessary to include the effect of these waveguide openings in simulations. Since these pixels are electrically large, it is more feasible to model them by using the computationally efficient mode-matching approach. In this paper we discuss the elements required to model such pixels within the mode-matching approach and apply it to a typical pixel containing a free space gap, based on an experimental Transition Edge Sensor (TES) cavity waveguide pixel at SRON Groningen.

    Item Type: Book Section
    Additional Information: Cite as: D. McCarthy et al., "Analysis and optical characterisation of bolometric integrating cavities including a free space gap in the waveguide structure," 2015 9th European Conference on Antennas and Propagation (EuCAP), Lisbon, 2015, pp. 1-5.
    Keywords: multi-moded; mode matching; free space; bolometer; integrating cavity; Transition Edge Sensor;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 13774
    Depositing User: Dr. Marcin Lukasz Gradziel
    Date Deposited: 05 Jan 2021 16:56
    Publisher: IEEE
    Refereed: Yes
    URI:

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