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Polarized light

  1. Oct 10, 2011 #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. Oct 11, 2011 #2

    Matterwave

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    Sure, reflect the light off a (jaggedy) surface should do the trick.
     
  4. Oct 11, 2011 #3
    Isn't reflected light always polarised?
     
  5. Oct 11, 2011 #4

    Andy Resnick

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    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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