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How can i obtain optical constants

  1. Jun 26, 2010 #1
    can someone trained in ellipsometer can guide me how can i obtain optical constants of a thin film which is sandwiched between two films of known optical constants. with such multilayer samples interference oscillations become difficult to resolve but i am sure that top layer is non-absorbing (and thin enough to pass light) so light is being reflected from the layer beneath it whose optical constants needs to be known. they bottom layer is substrate.
    i think understand the basic theory of ellipsometry and know what is happening. i also know that optical constant can be obtained in this way but not sure how can i resolve interference oscillations to identify which one comes from the top layer which one from my film with unknown optical constants.
  2. jcsd
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