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Homework Help: Michelson Interferometer question

  1. Jun 29, 2011 #1
    1. The problem statement, all variables and given/known data

    Express the intensity from a beam that crosses a Michelson Interferometer that its beam splitter transfers 1/3 and reflects 2/3.

    2. Relevant equations


    3. The attempt at a solution

    Would like to have a hint...
  2. jcsd
  3. Jun 29, 2011 #2


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    Homework Helper

    Light can take one of two paths in a Michelson interferometer. Call the initial intensity I0, and trace both paths to see what the final intensity is. Every time the light reflects, multiply the original intensity by 2/3; every time it transmits, multiply the intensity by 1/3.
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