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    Optical requirements and modelling of coupling devices for the SAFARI instrument on SPICA


    Trappe, Neil and Gao, J.R. and Glowacka, D.M. and Goldie, D.J. and Griffin, D. and Khosropanah, P. and Mauskopf, P.D. and Morozov, Dmitry and Murphy, J.Anthony and O'Sullivan, Créidhe and Ridder, Marcel and Withington, Stafford (2011) Optical requirements and modelling of coupling devices for the SAFARI instrument on SPICA. In: Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP). IEEE, pp. 3321-3324. ISBN 9788882020743

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    Abstract

    The next generation of space missions targeting far-infrared bands will require large-format arrays of extremely low-noise detectors. The development of Transition Edge Sensors (TES) array technology seems to be a viable solution for future mm-wave to Far-Infrared (FIR) space applications where low noise and high sensitivity is required. In this paper we concentrate on a key element for a high sensitivity TES detector array, that of the optical coupling between the incoming electromagnetic field and the phonon system of the suspended membrane. An intermediate solution between free space coupling and a single moded horn is where over-moded light pipes are used to concentrate energy onto multi-moded absorbers. We present a comparison of modelling techniques to analyse the optical efficiency of such light pipes and their interaction with the front end optics and detector cavity.

    Item Type: Book Section
    Additional Information: The authors would like to thank the European Space Agency for supporting this work through TRP Programme AO/l-5922/08/NLIEM and Science Foundation Ireland for their support also.
    Keywords: astronomical instruments; infrared astronomy; optical couplers; transition radiation detectors;
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Item ID: 9845
    Depositing User: Dr. Neil Trappe
    Date Deposited: 29 Aug 2018 13:44
    Publisher: IEEE
    Refereed: Yes
    Funders: European Space Agency, Science Foundation Ireland (SFI)
    URI:

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