Polarized light

  1. When light is emitted from a source it is nearly always unpolarised meaning the E and B fields lie in randomly directed mutually perpendicular planes. When Light goes through a polarising filter it causes the fields to uniform mutually perpendicular planes.

    My question is however, once light is polarised can you 'unpolarise' the light? In otherwords can you 'rescatter' the E and B fields?
  2. jcsd
  3. Matterwave

    Matterwave 3,865
    Science Advisor
    Gold Member

    Sure, reflect the light off a (jaggedy) surface should do the trick.
  4. Isn't reflected light always polarised?
  5. Andy Resnick

    Andy Resnick 6,147
    Science Advisor
    Education Advisor

    Converting fully polarized light to randomly polarized light is not trivial and generally requires multiple scattering (either from a rough surface, a pair of counter-rotating ground glass plates, or something called a 'scrambler' http://www.klccgo.com/cqmscramb.htm).
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