Towards all-dielectric, polarization-independent optical cloaks

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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Fully enclosing, all-dielectric cloaks working for both E-z and H-z polarizations simultaneously are presented in this letter. The cloaks are effective for two antiparallel angles of incidence, and the layout of standard dielectric material in the cloak is determined by topology optimization. Scattering from cylinder and cloak is reduced for an H-z-polarized wave compared to an E-z-polarized wave by taking advantage of the surface mode at the perfectly electric conducting boundary. Perhaps contrary to simple intuition, fully enclosed, all-dielectric, low-contrast cloaks cannot be designed effectively when distributing a material with lower permittivity than the background material.
Original languageEnglish
JournalApplied Physics Letters
Publication date2012
Volume100
Journal number10
PagesPaper 101106
Number of pages4
ISSN0003-6951
DOIs
StatePublished

Bibliographical note

Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

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