Optical Activity Enhanced by Strong Inter-molecular Coupling in Planar Chiral Metamaterials

The polarization of light can be rotated in materials with an absence of molecular or structural mirror symmetry. While this rotating ability is normally rather weak in naturally occurring chiral materials, artificial chiral metamaterials have demonstrated extraordinary rotational ability by enginee...

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Published in:Scientific reports 2014-09, Vol.4 (1), p.5864-5864, Article 5864
Main Authors: Kim, Teun-Teun, Oh, Sang Soon, Park, Hyun-Sung, Zhao, Rongkuo, Kim, Seong-Han, Choi, Wonjune, Min, Bumki, Hess, Ortwin
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Language:English
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639/301/1019
639/301/1019/1015
639/624/399
639/624/400
Design
Electric fields
Electromagnetic radiation
Handedness
Humanities and Social Sciences
multidisciplinary
Optics
Physics
Polarization
Science
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cited_by cdi_FETCH-LOGICAL-c504t-44efd727f845b21aa2ba19c2a33f3a1b7204dfafeafe566ba23801659d2cd24e3
cites cdi_FETCH-LOGICAL-c504t-44efd727f845b21aa2ba19c2a33f3a1b7204dfafeafe566ba23801659d2cd24e3
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container_start_page 5864
container_title Scientific reports
container_volume 4
creator Kim, Teun-Teun
Oh, Sang Soon
Park, Hyun-Sung
Zhao, Rongkuo
Kim, Seong-Han
Choi, Wonjune
Min, Bumki
Hess, Ortwin
description The polarization of light can be rotated in materials with an absence of molecular or structural mirror symmetry. While this rotating ability is normally rather weak in naturally occurring chiral materials, artificial chiral metamaterials have demonstrated extraordinary rotational ability by engineering intra-molecular couplings. However, while in general, chiral metamaterials can exhibit strong rotatory power at or around resonances, they convert linearly polarized waves into elliptically polarized ones. Here, we demonstrate that strong inter-molecular coupling through a small gap between adjacent chiral metamolecules can lead to a broadband enhanced rotating ability with pure rotation of linearly polarized electromagnetic waves. Strong inter-molecular coupling leads to nearly identical behaviour in magnitude, but engenders substantial difference in phase between transmitted left and right-handed waves.
doi_str_mv 10.1038/srep05864
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subjects 639/301/1019
639/301/1019/1015
639/624/399
639/624/400
Design
Electric fields
Electromagnetic radiation
Handedness
Humanities and Social Sciences
multidisciplinary
Optics
Physics
Polarization
Science
title Optical Activity Enhanced by Strong Inter-molecular Coupling in Planar Chiral Metamaterials
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