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I thought the problem was to get the wave's decay correctly through k (and not ω). What exactly is / was your question ?

The solution can still be written as E(r,t)=E_0 e^{i(kr-\omega t)} with k^2=\mu\epsilon\omega^2 + i \mu\sigma\omega Whoose I am part is Im{k}=\omega\sqrt{\epsilon\mu}(\sqrt{1+\sigma^2/\epsilon^2\omega^2}-1) /2 responsible for the damping inside the metal.

No. Why do you say this ? What do you mean by "nonlocality increases from linear to nonlinear" ?

A non-local eqn will pop out if the particle's position does not depend only on the applied field, say F, but also on its derivatives, its curl for example. This does not necessarily* introduce nonlinearities in the eqns of motion. * meaning that you don't always get quadratic or higher...

Your question is very general. The response of a material can be non-linear -this depends on the (external) field- while non-locality does not necessarily depend on the field. I don't know if this applies to all cases, this is simply my understanding. You need to elaborate a bit here. What...

I 'm not sure i fully understand your question but the eigenfrequency of a SRR depends on the polarization of the field: you can excite the LC resonance at the gap, or the SPP resonance at the SRR's branches (or even both). Each one of these is an eigenfrequency of the SRR. [I am referring to...

I think that this book is more like a reference textbook than a course book. It covers a plethora of topics which however are not all covered in depth. For example, if you want to study waveguides and optical fibres or diffraction and scattering then you should follow a different book. Even...

The absorpion in a dielectric is less than that in a metal. In many cases you can safely neglect the Im{ε} of a dielectric.

I think you 'll find it in Mandl's "Statistical Physics". Landau also uses Ω=-PV while Pathria sticks to PV.

The two cases that you describe work in more-or-less the same way. "Modern cameras" also use a special kind of mirrors, called pentamirrors*. The "accurate" representation of an image depends on many parameters. *High-end cameras use pentaprisms. Pentamirrors are used in order to decrease the...

Your question is reffering to the wave function of a photon or to the photon gas problem ? You can take a look here for the first: The photon wave function , I. Bialynicki-Birula , Coherence and Quantum Optics VII, Eds. J.H.Eberly, L.Mandel, and E.Wolf., Plenum, New York, 1996, p. 313 You can...

I 'm not sure i fully understood your question but you try using two lenses. The 1st (focal length f1) to focus the light at a point and the 2nd (focal length f2) to get a parallel ray output. The 2nd lens must be placed with its focal length at the focus point of the 1st i.e., at a distance...

Interference of two different lasers may occur. This has been verified experimentally in various settings. However this does not mean that all "kinds"* of 'em can interfere. * states For a detailed explanation take a look at p.37-38 of "Quantum optics" by D. F. Walls, Gerard J. Milburn...

" I did not say that. How do you go on finding LaTeX Code: \\mathbf{A} for a system of 2 interacting charges? " Maybe using the Liénard–Wiechert potentials ?

Yes this is destructive interference and it also occurs for both EM/acoustic waves.