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## Homework Statement

At a wavelength of 400nm, the semiconductor ZnSe has a complex refractive index n= 3.0+0.32i

A) If 400nm is incidient from air onto ZnSe with θ=tan

^{-1}(N

_{R}) = 71.6°,

What is the refraction angle of the transmitted wave?

B) Calculate the magnitude R and phase shift ψ associated with the amplitude reflection coefficient r for p-polarized 400nm radiation incident at 71.6°

C) If 400nm radiation with a unit polarization vector 1/√2[1 0] is incident at 71.6 on the air-ZnSe interface, find the unit polarization vector that describes the reflected radiation.

[The matrix is vertical, not horizontal, I'm new with the formatting on this forum :) ]

## Homework Equations

## The Attempt at a Solution

For part a, i tried using snell's law and just omitted the imaginary part, I'm not sure if it's the right answer because of that though. For the others, I have no idea where to start.