Fig. 5: Anisotropic properties of L-shaped metamaterials.
From: Controlling the broadband enhanced light chirality with L-shaped dielectric metamaterials
Mueller matrix polarimetry experimentally measured spectra of isotropic and anisotropic metamaterial properties: a circular dichroism b circular birefringence, c linear dichroism, and d linear birefringence for different total thickness (dTOT) L-shaped metamaterial designs. These properties are measured at a fixed azimuthal orientation of the sample where the linear dichroism is maximum and linear and circular birefringence is minimum. The inset polar plots demonstrate the corresponding azimuthal orientation dependency of each optical property for a fixed frequency shown with black stars in each main plot when the metamaterial thickness is maximum (dTOT = 256 nm). The inset plots prove that circular dichroism and birefringence are isotropic while linear dichroism and birefringence are anisotropic.
