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    Study of free-space coupling into mm-wave whispering-gallery mode resonators for a radioastronomy receiver

    Santamaría-Botello, Gabriel and Abdalmalak, Kerlos Atia and Schlecht, Maria-Theresa and González-Ovejero, David and Sedlmeir, Florian and Schwefel, Harald G. L. and Malzer, Stefan and Weber, Heiko and Segovia-Vargas, Daniel and McCarthy, Darragh and Murphy, J.Anthony and Döhler, Gottfried H. and García Muñoz, Luis Enrique (2017) Study of free-space coupling into mm-wave whispering-gallery mode resonators for a radioastronomy receiver. In: 2017 IEEE Antennas and Propagation Society International Symposium: Proceedings. Institute of Electrical and Electronics Engineers, pp. 1277-1278. ISBN 978-1-5386-3284-0

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    In this paper, the coupling mechanism of a free-space Gaussian beam into a whispering-gallery mode resonator through a dielectric lens is mathematically modeled and numerically solved by means of the Schelkunoff-Waterman method (the so called T-matrix method). This approach allows in principle, to quickly analyze the performance of different near-field coupling mechanisms with arbitrary excitations. The aim is to efficiently excite a WGM into a nonlinear dielectric resonator in order to detect the weak mm-wave radiation from the cosmic microwave background (CMB) by up-converting the signal into the optical domain via the nonlinearity of the medium.

    Item Type: Book Section
    Additional Information: This paper was presented at 2017 IEEE Antennas and Propagation Society International Symposium, July 9–14, 2017, Manchester Grand Hyatt, San Diego, California, USA.
    Keywords: Resonators; Lenses; Couplings; Optical resonators; Receivers; Optical surface waves; Nonlinear optics; dielectric resonators; matrix algebra; radio receivers; radioastronomy; whispering gallery modes; T-matrix method; near-field coupling; Schelkunoff-Waterman method; dielectric lens; whispering-gallery mode resonator; free-space Gaussian beam; radioastronomy receiver; mm-wave whispering-gallery mode resonators; free-space coupling; mm-wave radiation; nonlinear dielectric resonator;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 12017
    Identification Number:
    Depositing User: Dr. Anthony Murphy
    Date Deposited: 12 Dec 2019 15:13
    Publisher: Institute of Electrical and Electronics Engineers
    Refereed: Yes
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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