Light absorption and reflection

[eoghan]

Hi there!
I have a question about the classical interaction of light with matter according the Drude-Lorentz model. Let's suppose that the light in matter has a wave-number k which in general is complex. Then the real part of k accounts for the propagation of light, while the imaginary part of k is a dumping factor. Can I figure out the behavior of light? I mean, e.g. if $$Re(k)=0$$ and $$Im(k)\neq0$$ then I have an evanescent wave: does this mean that light is absorbed or reflected?
Thank you

 

[eoghan]

Uhm.. sorry, but I'm not english... don't you answer because my english is too bad that you don't understand the question or just because you don't know the answer?
In the former case I'll try to put it in other words:

The reflectance coefficient at a resonance frequency (k->infinity) is 1, therefore the light beam is reflected entirely and there is no absorption. But at a resonance frequency, shouldn't I get a resonance absorption?