Author(s): B. A. Knyazev, Yu. Yu. Choporova, M. S. Mitkov, V. S. Pavelyev, and B. O. Volodkin
Terahertz surface plasmons are realized experimentally via diffraction of a vortex beam from a metal-dielectric interface.
[Phys. Rev. Lett. 115, 163901] Published Wed Oct 14, 2015