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Reduce light scattering by index matching

  1. Jun 13, 2009 #1
    in order to reduce unwanted light scattering from a sample, a trick often used is to immerse it in a higher refractive index liquid . This is called index matching.
    Could anyone elaborate how it reduces unwanted scattering?
    regards
    pilo440
     
  2. jcsd
  3. Jun 13, 2009 #2

    atyy

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    When light travels through an index of constant refractive index, it doesn't get scattered - eg. travelling through vacuum, or pure air or pure water. It gets scattered due to random inhomogeneities in the refractive index. So if you have a sample of high refractive index, you can decrease scattering from it by making the surroundings match its refractive index.
     
  4. Jun 13, 2009 #3
    thanks!
     
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