Interferometric experiments on the transmission matrix of diffusive neutral inclusions

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Niemeyer, Andreas and Schroff, Paul and Choi, Wonjun and Cho, Jaechol and Naber, Andreas and Choi, Wonshik and Wegener, Martin (2021) Interferometric experiments on the transmission matrix of diffusive neutral inclusions. Journal of the Optical Society of America B, 38 (9). C42-C49. ISSN 1520-8540 (https://doi.org/10.1364/JOSAB.425847)

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Abstract

By using tailored disorder in the regime of diffusive light propagation, core-shell cloaking structures have previously been presented. These structures make the cloak and an arbitrary interior nearly indistinguishable from the diffusive surrounding. This statement holds true for all incident polarizations of light, a broad range of incident directions of light in three dimensions, and a broad range of visible wavelengths. Here, by performing interferometric transmission-matrix experiments, we investigate the statistical wave properties of miniaturized versions of such structures. By using singular-value decomposition, we derive the eigenchannels and eigenvalues to assess the degree of wave correlation among multiply scattered waves. We find small but significant differences in the eigenvalue distributions, suggesting that the degree of wave correlation is lower for the neutral inclusion than for a homogeneously disordered reference sample, which corresponds to the surrounding of the neutral inclusion. Likewise, we find similar differences between optically inspecting the core-shell neutral-inclusion and its spatial neighborhood. These differences allow us to reveal the neutral inclusion due to different statistics of the underlying random walks of light.

  • Item type:Article
    ID code:77432
    Dates:
    Date
    Event
    1 September 2021
    Published
    9 July 2021
    Published Online
    11 June 2021
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:17 Aug 2021 11:48
    Last modified:11 Nov 2024 13:11
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/77432
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