Re: De-polarize light?


"Helpful person" <rrllff@xxxxxxxxx> wrote

How does a colloid work at a diffraction limited focus of a few
microns? Surely the colloid also has to have thickness which will also
damage the difraction limited nature of a laser beam.

I used milk or colloid volumes of a few cubic millimeters.

Therefore the droplet was much larger than a few microns.

The method would not work at the scale you indicate.

By refocusing the droplet one could reduce its apparent diameter
but that would be very wasteful.

The proposed trick does not work in every instance obviously. :-(

But for the interferometry experiments I was performing it allowed
me to get rid of unwanted diffraction patterns and speckles.

Rotating diffusers, especially if you use a holographic diffuser, lose
only about half the light and also maintain polarization.

That's very interesting, any refs?

However the title of the thread refers to depolarization. :-)

Please visit my web site at www.richardfisher.com



.