| Abstract: | Lateral and transverse shifts in the direction of arbitrarily polarized electromagnetic
waves reflected totally or partially from a denser medium are calculated exactly, in
terms of the deviation of the Poynting vector from radial. The shifts are analogous to
the Goos-Hänchen and Fedorov-Imbert shifts for beams. There can be a transverse shift
even for unreflected dipole radiation if the polarization is not linear. With reflection,
there can be a transverse shift even for linear polarization. There are contributions
from the geometrical ray, the lateral ray that interferes strongly with it, and the large
peak at the Brewster angle (for TM polarization). At the critical angle, the lowest-order
asymptotics is inadequate and a more sophisticated treatment is devised. |
