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(Color online) (a) SEM micrograph of the bilayered metamaterial. Note that the rosettes in two layers are mutually twisted and that their centers are aligned with high precision. (b) Schematics of the bilayered metamaterial’s square unit cell. (c) Schematics of the monolayered reference metamaterial’s square unit cell.
(Color online) (a) Transmission spectra of the bilayered and reference monolayered metamaterial structures. Red dashed lines indicate wavelengths for which the optical activity has been measured and black dots mark the specific rotation of the bilayered metamaterial at these wavelengths. (b) Polarization rotation induced by the bilayered metamaterial at as a function of azimuth of the incident linearly polarized light. The solid line is a numerical fit. The dashed line indicates the true level of the optical activity component in the rotation.
Polarization rotation exhibited by bilayered and monolayered metamaterial structures.
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