Planar nano-optics in anisotropic media: anomalous refraction and diffraction-free lensing of highly confined polaritons

J. Duan, G. Álvarez-Pérez, A. I. F. Tresguerres-Mata +13

As one of the most fundamental optical phenomena, refraction between isotropic media is characterized by light bending towards the normal to the boundary when passing from a low- t…