SEW surface electromagnetic waves

SEMPA Scanning Electron Microscopy with Polarisation Analysis, 37 SERS Surface Enhanced Raman Scattering, 32 SEW Surface Electromagnetic Waves Spectroscopy, 40 SEXAFS Surface EXAFS, 49... 

Surface electromagnetic waves (SEW) on a metal-vacuum interface (often called surface plasmons) are discussed to demonstrate the essential features of SEW. SEW are surface waves in the sense that the electric and magnetic fields decay exponentially as one moves away from the surface, either into the metal or into the vacuum. Figure 1 shows the coordinate system we shall use. The metal-vacuum interface is the z = 0 plane, and the metal occupies the z < 0 half-space. The direction of propagation is the positive x-directi on. The metal has a... 

Another interesting variant of the total reflection technique is the so-called Surface Electromagnetic Wave Spectroscopy (SEWS), which consists of the generation of a surface plasmon on a substrate by frustrated total internal reflection in a prism located a few microns from the surface. This plasmon is decoupled by a second prism. Some interesting data relating to surface modes on alumina have been reported with this technique [30]. 

Surface electromagnetic waves (SEWs) in PCs have also been used for sensing particularly in ID PCs. They are excited at certain incidence and are sensitive to the layer adjacent to the surface [108-110]. Although it is possible to excite SEWs in PCs, coupling through a prism is preferable in order to observe them in measurable incidence angles (Fig. 12). 

The key element in the formation of these ripples is the fact that surface electromagnetic waves (SEW) were generated. This is another means by which light energy can be coupled into a material and one that was not obvious from prelaser knowledge. The fact that a gratinglike interference pattern is set up allows one to apply the elec-... 

This equation is called the SEW dispersion curve. For ordinary electromagnetic waves in vacuum, the dispersion curve is k = w/c. We also find, in order to have surface waves, that... 

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