Question

What's the equation for frustrated total internal reflection?

Answer 1

Could someone provide an equation for calculating frustrated internal reflection? Like for a partially reflective laser mirror or a beam splitter. I believe that it depends on the refractive indexes of a first medium and a third medium if a second medium separating the two (like a mirror) is thin enough that evanescent wave coupling allows light to be transmitted through to the third if it's in a certain angle range. However, I couldn't find an equation to calculate this. I found one for total internal reflection but not for this. I could use some help on this, or otherwise something that explains this. Thank you.

Answer 2

Answer:

you can search in Google