Dispersionless optical activity in metamaterials
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]
|Collections||ANU Research Publications|
|Source:||Applied Physics Letters|
|01_Hannam_Dispersionless_optical_2013.pdf||Published Version||851.39 kB||Adobe PDF|
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