Resonance-like Goos-Hänchen shift induced by nano-metal films



The influence of nano-metal films on the Goos-Hänchen shift (GHS) is investigated. The films were deposited at the total reflecting surface of a perspex prism and had a sheet resistance varying between Z = 25 and 3 000 Ω. A resonance-like enhancement of the shift and of the absorption is found for TE polarized waves, when the sheet resistance approached the value of the vacuum impedance. For TM waves the influence of the metal films on the GHS was marginal. The experiments were carried out with microwaves.