Surface polariton (PP) - the surface electromagnetic wave propagating along the interface. The intensity of such a wave rapidly decreases with distance from the interface between media, for linear media exponentially.
| Surface polariton | |
| Composition: | Quasiparticle |
|---|---|
| Classification: | Singular surface polaritons , dispersionless surface polaritons |
| Group: | Polariton |
| Discovered: | Robert Wood in 1912 in the form of lattice anomalies of Wood; their interpretation in terms of surface plasmon polaritons was given by W. Fano (1941) |
| In honor of whom and / or what is named: | Surface , polariton |
| Number of types: | 2 |
On the flat boundary of two stationary isotropic media, PP can exist only if at least one of the boundary media has negative dielectric or magnetic permeability . However, if one of the media moves and is a relativistic plasma flow or an electron beam, the SP can also exist in the frequency range corresponding to the positive permittivity of both media [1] . Moreover, there is a critical parameter - the angle between the velocity and the wave vector of the wave, starting from which growing surface waves can occur [2] .
There are singular or dispersionless PPs. They exist at the boundaries of anisotropic crystals. Unlike ordinary PPs, they exist only in certain directions in the plane of the boundary.
The study of surface polaritons began in connection with the study of the propagation of radio waves [3] . An experimental manifestation of surface electromagnetic waves at the metal boundary was discovered by Robert Wood in 1912 in the form of Wood lattice anomalies; their interpretation in terms of surface plasmon polaritons was given by W. Fano (1941).
See also
- Tamm plasmon
Notes
- ↑ Barsukov K.A., Kanareikin A.D. // Journal of technical physics. - 1985. - No. 55 (9) . - S. 1847-1849 . - ISSN 0044-4642 .
- ↑ I. L. Sheinman. // Journal of Technical Physics: Journal. - 2001. - No. 71 (5) . - S. 28-34 . - ISSN 0044-4642 .
- ↑ J. Zenneck, 1907, A. Sommerfeld, 1909; Sommerfeld A. // Annalen der Physik. 1899. V. 303. No. 2. P. 233. Zenneck J. // Annalen der Physik. 1907. V. 328. No. 10. P.846.