5. Some applications

5.1 Fine refractometry

The surface plasmon is very sensitive to a change in the index of the external medium, with a resolution of the order of 10 ^–7 UIR. This results in a change in the angle at which the surface plasmon is coupled (angle translation in the diagram 13 ). Thus, the use of the Kretschmann prism for highly sensitive refractometry consists in using monochromatic light and precisely scanning angles of incidence beyond the...