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    Major reshaping of narrow beams by resonant multilayer structure


    Yurchenko, V. and Ciydem, M. and Gradziel, Marcin and Murphy, J.Anthony (2020) Major reshaping of narrow beams by resonant multilayer structure. Optics Express, 28 (6). pp. 8211-8222. ISSN 1094-4087

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    Abstract

    Major reshaping of electromagnetic MM-wave beams transmitted at resonant frequencies through high-quality multilayer structures is demonstrated. Beam reshaping emerges due to efficient excitation of intrinsic quasi-optical modes with complex spatial profiles by an incident beam. This leads to a significant increase of width and distortion of shape of transmitted beams, which grow with increasing likelihood of excitation of higher-order modes. The beam shape is extremely sensitive to imperfections of real structures and can become complex and asymmetric even at the normal-angle transmission of symmetric incident beams. The effect is of importance for the resonant MM-wave and THz spectroscopy of low-loss dielectric materials.

    Item Type: Article
    Additional Information: © 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
    Keywords: electromagnetic MM-wave beams; high-quality multilayer structures; resonant MM-wave; THz spectroscopy; low-loss dielectric materials;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 13769
    Identification Number: https://doi.org/10.1364/OE.386610
    Depositing User: Dr. Marcin Lukasz Gradziel
    Date Deposited: 04 Jan 2021 17:22
    Journal or Publication Title: Optics Express
    Publisher: Optical Society of America
    Refereed: Yes
    URI:

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