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 simply sum.
No, I take that back. My previous post was correct. The point is that the different angles correspond to different frequencies, so when you take a single Fourier component of the scattered field you really are looking at just a single angle.
In that case, you really must put in a narrowband source (I think, unless there is some additional trick that is not occurring to me now). However, you
I take this back. Just put in a short pulse and you are fine, as I first said.
(Sorry, I've managed to confuse myself now.) Steven _______________________________________________ meep-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
