Dear Meep users,

I did a simple two dimensional computation recently where I just wanted
to check Meeps result on transmission through a dielectric slab. So I
filled the while computational cell with a dielectric of eps = 1 in one
case and 2.5 in one case. I excited with a Gaussian plane wave puls in
one end of my (2d) cell and put a flux plane in the other end. Then I
computed the quote of the two transmitted pulses from the flux-plane in
the two cases and expected the transmission in the two cases to be
exactly the same (the quote to be ==1).

However I found this quote to be related via the refractive index of the
materials. This was a bit surprising to me, since I believed those
computations to be powers (Poynting vectors).

So it seems to be the case here that different amounts of energy enters
from the source depending of in what dielectric it sits. How can I
understand this?

Best Regards,
Robert Rehammar

-- 
Robert Rehammar
PhD-Student
Applied Physics, Chalmers University of Technology
Department of Physics, Göteborg University
SE-421 96 Göteborg
Sweden

Tel +46 (0)31 772 3156
Fax +46 (0)31 416 984
Cel +46 (0)738 328834
Web fy.chalmers.se/~e9ravn


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