Temporal boundaries in electromagnetic materials

Gratus, Jonathan and Seviour, Rebecca and Kinsler, Paul and Jaroszynski, Dino A (2021) Temporal boundaries in electromagnetic materials. New Journal of Physics, 23 (8). 083032. ISSN 1367-2630 (https://doi.org/10.1088/1367-2630/ac1896)

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Abstract

Temporally modulated optical media are important in both abstract and applied situations, such as spacetime transformation optics, relativistic laser–plasma interactions, and dynamic metamaterials. Here we investigate the behaviour of temporal boundaries, and show that traditional approaches that assume constant dielectric properties, with loss incorporated as an imaginary part, necessarily lead to unphysical solutions. Furthermore, although physically reasonable predictions can be recovered with a narrowband approximation, we show that appropriate models should use materials with a temporal response and dispersive behaviour.

  • Item type:Article
    ID code:78040
    Dates:
    Date
    Event
    19 August 2021
    Published
    28 July 2021
    Accepted
    11 March 2021
    Submitted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:06 Oct 2021 14:13
    Last modified:22 Apr 2024 18:55
    URI:https://strathprints.strath.ac.uk/id/eprint/78040
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