On Wed, 28 Mar 2007, Markus Testorf wrote:
I think your response to Matt demands a follow up. Matt's problem (as well as
ours) involves periodic boundaries. In our simulations we clearly see that a
periodically continued line source only produces a plane wave (CW) without
artifacts for specific
On Wed, 28 Mar 2007, Steven G. Johnson wrote:
If you have a non-periodic structure in the x direction, or care about
frequencies above the diffraction cutoff, then different input angles can
scatter into the same output angle and there can be interference. In this
case, the power does not simp
On Wed, 28 Mar 2007, Steven G. Johnson wrote:
If you want to see the *field* pattern for a given angle, then you need a
narrowband (CW) source. But if you want the *flux* from a given angle, then
you can put in a broadband source and only take that frequency component of
the Fourier transform.
To wit,
http://ab-initio.mit.edu/pipermail/meep-discuss/2007-February/000700.html:
Third, because the magnitude of k depends on the frequency, you can't
make a single source that produces light with a single angle (other
than normal incidence) over a broad bandwidth, as your control file
atte
Hi Steve,
I think your response to Matt demands a follow up. Matt's problem (as
well as ours) involves periodic boundaries. In our simulations we
clearly see that a periodically continued line source only produces a
plane wave (CW) without artifacts for specific combinations of
wavelength and
I thought that this restricts one to a narrowband source:
(set! kx (* fcen (sin (deg->rad theta
(change-k-point! (vector3 kx 0 0))
(change-sources! (list
(make source
(src (make gaussian-src (frequency fcen) (fwidth df)))
(component
On Wed, 28 Mar 2007, Nils Jensen wrote:
In your suggestion, you mention about the function that let us compute
the instantaneous flux at a single time step. How can I define it in my
MEEP program?
" No. You can't use the integrated flux spectrum for a CW source
because the source does not
On Wed, 28 Mar 2007, matt wrote:
My trouble with this is that it isn't compatible with the periodic plane wave
excitation:
I can create a planewave with oblique incidence and periodic boundaries, but
only if the source is very narrowband (df is small). A large df doesn't work
because the peri
Thanks for the reply.
My trouble with this is that it isn't compatible with the periodic plane
wave excitation:
I can create a planewave with oblique incidence and periodic boundaries,
but only if the source is very narrowband (df is small). A large df
doesn't work because the periodic bou
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