Question
Specify the main factors of Faraday rotation and explain how they are related to each other.
Step 1
Faraday rotation (also called Faraday effect) is a magneto-optical phenomenon where the plane of polarization of linearly polarized light rotates when the light passes through a medium in the presence of a magnetic field parallel to the direction of light Show more…
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Polarization - AHL / SL Option A
In a polarized light experiment, a setup similar to the one in Figure 31.22 is used. Unpolarized light with intensity $I_{0}$ is incident on polarizer $1 .$ Polarizers 1 and 3 are crossed (at a $90^{\circ}$ angle $)$, and their orientations are fixed during the experiment. Initially, polarizer 2 has its polarizing angle at $45^{\circ} .$ Then, at time $t=0 \mathrm{~s}$, polarizer 2 starts to rotate with angular velocity $\omega$ about the direction of propagation of light in a clockwise direction as viewed by an observer looking toward the light source. A photodiode is used to monitor the intensity of the light emerging from polarizer $3 .$ a) Determine an expression for this intensity as a function of time. b) How would the expression from part (a) change if polarizer 2 were rotated about an axis parallel to the direction of propagation of the light but displaced by a distance $d<R,$ where $R$ is the radius of the polarizer?
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