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Arbitrarily thin metamaterial structure for perfect absorption and giant magnification
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0002-3401-1125
2011 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 19, no 12, 11114-11119 p.Article in journal (Refereed) Published
Abstract [en]

In our common understanding, for strong absorption or amplification in a slab structure, the desire of reducing the slab thickness seems contradictory to the condition of small loss or gain. In this paper, this common understanding is challenged. It is shown that an arbitrarily thin metamaterial layer can perfectly absorb or giantly amplify an incident plane wave at a critical angle when the real parts of the permittivity and permeability of the metamaterial are zero while the absolute imaginary parts can be arbitrarily small. The metamaterial layer needs a totally reflective substrate for perfect absorption, while this is not required for giant magnification. Detailed analysis for the existence of the critical angle and physical explanation for these abnormal phenomena are given.

Place, publisher, year, edition, pages
2011. Vol. 19, no 12, 11114-11119 p.
Keyword [en]
PERMITTIVITY, INDEX
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-37274DOI: 10.1364/OE.19.011114ISI: 000292865500011Scopus ID: 2-s2.0-79958206591OAI: oai:DiVA.org:kth-37274DiVA: diva2:433136
Note
QC 20110809Available from: 2011-08-09 Created: 2011-08-08 Last updated: 2017-12-08Bibliographically approved

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