Dear, Steven and meep users.
When I calculate the transmitted or reflected flux as below,
I wonder whether the results E-field or energy.
(set! sources
(list
(make source
(src (make gaussian-src (frequency fcen) (fwidth df)))
(component Ex) (center 0 0 0) ) ))
; flux plain
(define Flux; transmitted flux
(add-flux fcen df nfreq
(make flux-region
(center 0.02 0 0) (size 0 0.04 0.04)) ))
(run-sources+ (stop-when-fields-decayed 20 Ex (vector3 0 0 0) 1e-03))
(display-fluxes Flux)
Because Meep Reference said like this :
flux-region
A flux-region object is used with add-flux below to specify a region in which Meep should accumulate the appropriate Fourier-transformed fields in order to compute a flux spectrum.
flux-region- A region (volume, plane, line, or point) in which to compute the integral of the Poynting vector of the Fourier-transformed fields.
Sincerely.
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