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Group velocity and reflective index relationship

  1. Feb 17, 2008 #1
    how these two are related to each there? if refractive index is given as a function of angular frequency, how both are related? reflective index= omega*c / k.anyone?
  2. jcsd
  3. Feb 17, 2008 #2

    Claude Bile

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    Science Advisor

    Group velocity is equal to;



    [tex] k = \frac{k_0}{n}[/tex]

    Where [itex]k_0[/itex] is the free-space wave-vector and [itex]n[/itex] is the refractive index of the medium.

  4. Feb 18, 2008 #3
    hi Claude, thanks :D :D ;)
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