Homogenization of resonant chiral metamaterials

Andrei Andryieuski, C. Menzel, Carsten Rockstuhl, Radu Malureanu, F. lederer, Andrei Lavrinenko

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Homogenization of metamaterials is a crucial issue as it allows to describe their optical response in terms of effective wave parameters as, e.g., propagation constants. In this paper we consider the possible homogenization of chiral metamaterials. We show that for meta-atoms of a certain size a critical density exists above which increasing coupling between neighboring meta-atoms prevails a reasonable homogenization. On the contrary, a dilution in excess will induce features reminiscent to photonic crystals likewise prevailing a homogenization. Based on Bloch mode dispersion we introduce an analytical criterion for performing the homogenization and a tool to predict the homogenization limit. We show that strong coupling between meta-atoms of chiral metamaterials may prevent their homogenization at all.
Original languageEnglish
JournalPhysical Review B Condensed Matter
Volume82
Issue number23
Pages (from-to)235107
ISSN0163-1829
DOIs
Publication statusPublished - 2010

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