On spacetime transformation optics:temporal and spatial dispersion

Gratus, Jonathan and Kinsler, Paul and McCall, Martin W. and Thompson, Robert T. (2016) On spacetime transformation optics:temporal and spatial dispersion. New Journal of Physics, 18. ISSN 1367-2630

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The electromagnetic implementation of cloaking, the hiding of objects from sight by diverting and reassembling illuminating electromagnetic fields has now been with us ten years, while the notion of hiding events is now five. Both schemes as initially presented neglected the inevitable dispersion that arises when a designed medium replaces vacuum under transformation. Here we define a transformation design protocol that incorporates both spacetime transformations and dispersive material responses in a natural and rigorous way. We show how this methodology is applied to an event cloak designed to appear as a homogeneous and isotropic but dispersive medium. The consequences for spacetime transformation design in dispersive materials are discussed, and some parameter and bandwidth constraints identified.

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Journal Article
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New Journal of Physics
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11 Oct 2016 15:26
Last Modified:
17 Sep 2023 01:57