Broadband chiral metamaterials with large optical activity
We study theoretically and experimentally a type of metamaterial with hybrid elements composed of twisted pairs of cross-shaped meta-atoms and their complements. We reveal that such two-layer metasurfaces demonstrate large, dispersionless optical activity at the transmission resonance accompanied by very low ellipticity. We develop a retrieval procedure to determine the effective material parameters for this structure, which has symmetry (C4) of a lower order than other commonly studied chiral...[Show more]
|Collections||ANU Research Publications|
|Source:||Physical Review B|
|01_Hannam_Broadband_chiral_metamaterials_2014.pdf||687.99 kB||Adobe PDF|
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