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Dispersionless optical activity in metamaterials

Hannam, Kirsty; Powell, David A.; Shadrivov, Ilya V.; Kivshar, Yuri S.


We introduce a chiral metamaterial with strong, non-resonant optical activity, and very low polarization ellipticity. We achieve this by combining a meta-atom and its complementary structure into a meta-molecule, resulting in the coupling of magnetic and electric dipole responses. In contrast to either a pair of crosses, or complementary crosses, this structure has low dispersion in the optical activity at the transmission resonance. We also study the excitation mechanism in this...[Show more]

CollectionsANU Research Publications
Date published: 2013-05-24
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.4807438


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