Why Does Light Transition to a Second Medium During Total Internal Reflection?

[arash1r]

Hi And Need Help
The main Question is what happens to light and cause go into next medium as total internal reflection happens for incident angles higher than critical angle ?
so the main question is why the light path throughout the second medium?
We know when light travels from a medium with a higher refractive index to one with a lower refractive index, according to Snell's law light in such cases is completely reflected by the boundary to the first medium, a phenomenon known as total internal reflection. so the main question is why the light path throughout the second medium?
My main propose is to achieve a physical interpretation of this paradoxical duality .

 

[ehild]

At internal reflection, the light does not travel in the second medium, but there is an electric field there in the form of exponentially decaying standing wave.

ehild