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1. Light Polarization Reflected from Parabolic Mirror

Ok, so I finally got to the bottom of the issue I was having, and it has more to do with basic reflection properties than parabolic mirrors. Anytime you reflect a beam at a 3D angle, the polarization will shift. I searched all over for answers to this, and a friend finally pointed me in the...
2. Reflected Light at 3D Angle: Shift in Polarization

I've searched high and low for answers to this, and a friend of mine finally pointed me in the right direction. I decided to write a post about it so hopefully others who have the same question will find the answer more easily. When linearly polarized light is reflected at a 3D angle, the...
3. Light Polarization Reflected from Parabolic Mirror

Thanks for the clarification. But how do you know the beam is still Gaussian after it reflects from the parabolic mirror?
4. Light Polarization Reflected from Parabolic Mirror

Can you explain what you're showing here? My question was about parabolic mirrors, not symmetrical lenses.

Thanks!
6. Light Polarization Reflected from Parabolic Mirror

Thanks! So basically this means that if the alignment isn't perfect, there's a good chance that the polarization becomes distorted? Do you know where I can look to find more info about this curved polarization resulting from parabolic mirrors?
7. Light Polarization Reflected from Parabolic Mirror

Yes, in this case, the incident beam and the parabolic mirror are at the same height, and the flat surface is below (or above, whichever you prefer). I do not understand how the beam would be considered collimated at the focal point. To me, this suggests that a setup like this can be used for...
8. Light Polarization Reflected from Parabolic Mirror

Thanks! I forgot to mention that I'm most interested in S vs. P polarization. So I'll adjust my scenario a bit... Let's say I have a collimated and linearly polarized laser beam, and it reflects off of a parabolic mirror onto a flat absorbing surface. The plane of the absorbing surface is...
9. Light Polarization Reflected from Parabolic Mirror

Let's say I have a linearly polarized laser beam, and I focus it to a small spot using a parabolic mirror. Does the light retain its polarization at the focal point? Why or why not? I understand that flat mirrors and concave/convex mirrors preserve linear polarization, and I would like to make...