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 language | English |
|---|---|
| Pages (from-to) | 65-70 |
| Number of pages | 6 |
| Journal | Quantum Electronics |
| Volume | 47 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 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