Electromagnetic wave propagation at the interface between two conductors. II. Computer simulation of optical experiments
Abstract
We compute the reflectivity for p-polarized light in the prism-conductor-conductor "sandwich" geometry. The frequency is varied in a range between the plasma frequencies of the two conductors. Well-defined minima are found in the reflectivity versus frequency and reflectivity versus angle-of-incidence curves. These minima derive from plasmon polaritons excited at the interface between the conductors. The latter modes have been recently predicted directly from Maxwell's equations. In general, the fit between "electromagnetic" and "optical" dispersion curves is very good. We also show that interface polaritons are excited even in the absence of a prism; in this case, the geometry reduces to a metallic film on a metallic substrate.
- Publication:
-
Physical Review B
- Pub Date:
- July 1978
- DOI:
- 10.1103/PhysRevB.18.590
- Bibcode:
- 1978PhRvB..18..590H