Ok, here we go. I'm doing my PhD on a thing called surface plasmon resonance, which involves surface plasmons being excited in an evanescent field. (lost you yet?) Here is a link to a book that Im looking at for a more in depth explanation of the evanescent wave/field:
Looking on page 16 2.2 the evanescent wave: line three, is says "this is conveniently done by considering the phenomenon of total internal reflection."
That's fine and I understand that but on page 17 figure 2.1 the diagram shows refracted light which is in place to explain the various equations.
I'm completely confused why the figure is used, how can you explain the evanescent wave being induce when light under goes total internal reflection with a diagram of refracted light? It may help that n2 is a thin gold layer.
I have spoken to some optics guys in the uni and they are confused too. Can anyone explain it to me?
