# Transmission, internal reflection

1. Nov 18, 2013

### Dassinia

Hello,
1. The problem statement, all variables and given/known data
Consider two semi-infinite mediums of refractive index n=1.5, separated by an empty space of width d.
The surfaces of the two mediums are //.
A light beam of λ=633 nm and perpendicular polarisation comes with an angle of incidence θi=43° to the interface between the first medium and the empty space
What is the transmission factor in the second semi-infinite medium if d = λ0/4 ?
Use matrix formalism to consider multiples reflections.

2. Relevant equations
http://imageshack.com/a/img17/2531/gu44.png [Broken]

3. The attempt at a solution
The polarisation is perpendicular so we use t perpendicular
So we have to find θt.
We have ton consider the frustrated total internal reflection ?
I just don't get it at all
thanks
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

Last edited by a moderator: May 6, 2017