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Optics: What is phase matching, and mode locking

  1. Nov 22, 2013 #1
    1. The problem statement, all variables and given/known data
    The other day in lecture my professor mentioned the words mode locking and phase matching (same as velocity matching apparently) while on the topics of lasers. However, i can't find anything that can provide a simple explanation of what they are. Is there anyone who would know how to explain in simple terms what they are? Thank you in advance
  2. jcsd
  3. Nov 22, 2013 #2

    Simon Bridge

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    That will be because there is no "simple explanation" of what they are, whatever that means.
    You should start from a picture of what you are doing and what happens normally - i.e. when the phases are not matched etc.

    It sounds to me like you missed a lecture.
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