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    Modal analysis of partially coherent submillimeter-wave quasi-optical systems


    Withington, Stafford and Murphy, J.Anthony (1998) Modal analysis of partially coherent submillimeter-wave quasi-optical systems. IEEE Transactions on Antennas and Propagation, 46 (1). pp. 1651-1659. ISSN 0018-926X

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    Abstract

    We consider the modal analysis of partially coherent submillimeter-wave quasi-optical systems. According to our scheme the cross-spectral density at a plane is expanded as a sum of partially coherent propagating free-space modes. The coherence matrix, the elements of which are determined by evaluating bimodal overlap integrals, completely describes the state of the field at a plane. The coherence matrix can be traced through an optical system to another plane by means of a scattering matrix. Whereas diagonalizing the scattering matrix gives the natural modes of the optical system, diagonalizing the coherence matrix gives the natural modes of the field. We demonstrate the technique by studying the behavior of Gaussian beam telescopes when the field at the source plane is completely incoherent.

    Item Type: Article
    Additional Information: Cite as: S. Withington and J. A. Murphy, "Modal analysis of partially coherent submillimeter-wave quasi-optical systems," in IEEE Transactions on Antennas and Propagation, vol. 46, no. 11, pp. 1651-1659, Nov. 1998, doi: 10.1109/8.736617.
    Keywords: Modal analysis; Optical scattering; Submillimeter wave propagation; Optical mixing; Optical propagation; Coherence; Transmission line matrix methods; Telescopes; Submillimeter wave technology; Optical noise;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 14302
    Identification Number: https://doi.org/10.1109/8.736617
    Depositing User: Dr. Anthony Murphy
    Date Deposited: 01 Apr 2021 15:12
    Journal or Publication Title: IEEE Transactions on Antennas and Propagation
    Publisher: Institute of Electrical and Electronics Engineers
    Refereed: Yes
    URI:

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