Goos-Hanchen and Imbert-Fedorov shifts on hyperbolic crystals

We investigated Goos-Hanchen (GH) and Imbert-Fedorov (IF) shifts on a uniaxial hyperbolic crystal, where a circularly-polarized beam was incident on the crystal from the free space. The GH- and IF-shifts were analytically obtained and numerically calculated for the hexagonal boron nitride. Our results demonstrate that the GH- and IF-shift spectra are complicated and completely different in and out the hyperbolic frequency-bands (the reststrahlen bands in the infrared region). At the critical or Brewster angle, concisely analytical expressions of OH-shift was found, which explicitly state the optical-loss dependence of OH-shift at these special angles. We found the OH-shifts are very large at the critical and Brewster angles. It is very necessary to know these effects since hyperbolic materials are usually applied in the nanoand micro-optics or technology fields. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement