> On Dec 7, 2020, at 7:53 AM, Mandy Xia <m...@cornell.edu> wrote: > > Thanks Ardavan for your suggestion. So it means that I can simulate > nonpropagating waves only using a ContinuousSource?
You can also use a GaussianSource and look at the Fourier-transformed fields, for example. The only point here is that a pulse source contains many frequencies, but evanescent waves will be excited only in a specific bandwidth — you need some way to look at fields in that bandwidth if you want to see them. If you have a source that is generating evanescent waves (because c|k|/n > ω), this will show up as fields that decay exponentially away from the source.) However, I'm don't recall offhand if the DiffractedPlanewave source object supports evanescent waves; you might need an explicit amplitude function of your source plane. _______________________________________________ meep-discuss mailing list meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
