Just wondering about an experiment that should be easy to perform on an optical bench:
A coherent beam is polarized. It then hits another polarizer which is set to permit a polarization angle off that of the incident beam. The distance of this second polarizer is varied in steps much smaller than the wavelength of the light. The intensity of the re-polarized beam exiting the backside of the second polarizer, vs distance is plotted.
Is it constant?
Is there a cite of such an experiment so I can read it?