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Refraction of light pulse

  1. Jan 16, 2015 #1
    When a pulse of light enters a denser medium(slow medium) then is there phase shift or rather it passes unshifted?
  2. jcsd
  3. Jan 16, 2015 #2


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    Gold Member

    Interesting question. I can't give an answer other than my opinion which is that it does not ... it just slows down a bit. To me, it seems as though a phase shift as it enters the medium would imply a discontinuity and I can't see that happening.
  4. Jan 16, 2015 #3

    Doc Al

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    Staff: Mentor

    There is no phase shift of the transmitted pulse. (There will be a phase shift of the reflected pulse.)
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