Reflection of terahertz monochromatic surface plasmon-polaritons by a plane mirror

V. V. Gerasimov, B. A. Knyazev, A. K. Nikitin

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Using a free electron laser developed in Novosibirsk, we have studied the reflection of monochromatic (λ = 130 μm) surface plasmon-polaritons (SPPs) from a plane mirror attached to a waveguiding surface. It is found that 100 % SPP reflection occurs not only in the perpendicular position of the mirror relative to the surface, but also when the mirror is deflected from the normal by the angle α being smaller than the limiting angle α∗ proportional to the SPP wave vector. When the mirror is deflected by the angle greater than α∗, SPPs on a perfectly smooth surface must transform into a bulk wave, while, in the experiment, the SPP reflection coefficient decreases gradually to zero with increasing α, which is a manifestation of dispersion of the wave vector of monochromatic SPPs, caused by their scattering on the inhomogeneities of a real surface.

Original languageEnglish
Pages (from-to)65-70
Number of pages6
JournalQuantum Electronics
Volume47
Issue number1
DOIs
Publication statusPublished - 2017

Keywords

  • Drude model
  • Reflection of evanescent waves
  • Surface electromagnetic waves
  • Surface plasmon-polaritons
  • Terahertz radiation
  • surface plasmon-polaritons
  • reflection of evanescent waves
  • terahertz radiation
  • TECHNOLOGY
  • EDGE
  • ELECTROMAGNETIC-WAVES
  • PROPAGATION
  • surface electromagnetic waves
  • RANGE

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