|Apr16-10, 01:21 PM||#1|
EM waves in a dielectric
In general the electronic susceptibility, χ, is a function of frequency and is complex for a dielectric medium.
So what are the implications of this for the propagation of EM signals in a dielectric medium?
Since the electronic susceptibility varies with refractive index, and the refractive index varies with wave number k, then the wavenumber is also complex - so it has an imaginary component. What does this mean in terms of wave propagation (phase shift with frequency)?
|Apr16-10, 06:42 PM||#2|
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