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Homework Statement
A beam of light traveling in air hits a glass surface with refractive index 1.5 at 45 degree angle. The light is polarised at 45 degrees with respect to the plane of incidence. Calculate the polarization of the reflected beam.
Homework Equations
Boundary Conditions: E[itex]_{1}[/itex][itex]^{||}[/itex] = E[itex]_{2}[/itex][itex]^{||}[/itex] and [itex]\mu_{2}[/itex]B[itex]_{1}[/itex][itex]^{||}[/itex] = [itex]\mu_{1}[/itex]B[itex]_{2}[/itex][itex]^{||}[/itex]
Also, from the polarization: E[itex]_{I}[/itex][itex]^{||}[/itex] = E[itex]_{I}[/itex][itex]^{\bot}[/itex]
The Attempt at a Solution
I apply the first boundary condition to obtain E[itex]_{I}[/itex]cos45 + E[itex]_{R}[/itex]cos45 = E[itex]_{T}[/itex]cosθ.
I suppose i can do the same thing using the second boundary condition. I don't really understand how to compute the polarization of the reflected beam. Am i suppose to calculate the reflection coefficient to determine the polarization. Also, how does the initial polarization of 45 degree plays a part here. Thanks.