Fig. 3: Effective self-duality-induced birefringence-free anisotropy.

Illustration of circularly polarized waves incident upon (a) a conventional anisotropic dielectric slab, (c) an anisotropic pure-dielectric MM slab. Simulated distributions of \({E}_{y}\) (upper) and \({H}_{y}\) (lower) for a circularly polarized Gaussian beam incident upon (b) an anisotropic dielectric A slab with a thickness of \(10a\), or (d) an anisotropic pure-dielectric MM slab with 10 unit cells under \({\theta }_{i}=60^{\circ}\) and \({fa}/c=0.277\). The angle of refraction \({\theta }_{r}\) within the A and MM slabs is indicated