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On spacetime transformation optics: temporal and spatial dispersion

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Title: On spacetime transformation optics: temporal and spatial dispersion
Authors: McCall, MW
Gratus, J
Kinsler, P
Thompson, R
Item Type: Journal Article
Abstract: The electromagnetic implementation of cloaking, the hiding of objects from sight by di- verting 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 trans- formation. 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 de- sign in dispersive materials are discussed, and some parameter and bandwidth constraints identified.
Issue Date: 7-Dec-2016
Date of Acceptance: 14-Nov-2016
URI: http://hdl.handle.net/10044/1/42841
DOI: https://dx.doi.org/10.1088/1367-2630/18/12/123010
ISSN: 1367-2630
Publisher: IOP Publishing
Journal / Book Title: New Journal of Physics
Volume: 18
Copyright Statement: © 2016 IOP Publishing Ltd and Deutsche Physikalische Gesellschaf. Original content from this work may be used under the terms of the Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal and DOI.
Sponsor/Funder: The Leverhulme Trust
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: F/07 058/BK
EP/K003305/1
Keywords: Science & Technology
Physical Sciences
Physics, Multidisciplinary
Physics
spacetime
cloaking
dispersion
electromagnetism
CLOAK
METAMATERIALS
TIME
Fluids & Plasmas
02 Physical Sciences
Publication Status: Published
Article Number: 123010
Appears in Collections:Physics
Photonics
Faculty of Natural Sciences