Dear Steven and meep users.
I have been conducting some simulations by meep, and I have some problems with
dispersive material.
1. In "Materials in Meep
(http://ab-initio.mit.edu/wiki/index.php/Materials_in_Meep)", in order to use a
medium with eps=3.4+j0.101 at a frequency 0.42 , you say that I have to set a
sigma_d as (2*pi*0.42)*0.101/3.4. However, I believe that the term (2*pi) has
to be effaced because 0.42 already means an angular frequency in meep. Is it
right?
2. When setting a metal by using "make polarizability", meep says
"polarizability: omega=0.9552219, gamma=0.0423425, deps=77.4595, esat=0". In
this message, what is the 'esat'? After searching some references, I guess that
this 'esat' term is related to additional (j*esat)/w term. In this case,
dielectric function of dispersive material will be eps(w)=[epsilon] +
(j*[esat])/w + ([omega]^2*deps)/([omega]^2- w^2-j*w*[gamma]). Is it right?
3. When I use PEC and read HDF5 eps data using matlab, its value is not -INF,
but INF. Is this problem meep's bug? Or, is there no problem when simulating
PEC with epsilon as INF?
I'll aprreciate you if you answer my questions.
Thank you.
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