Re: Propagation constant
"Steven G. Johnson" <[email protected]>
| Newsgroups | gmane.comp.science.photonic-bands |
|---|---|
| Message-ID | <[email protected]> |
On Oct 28, 2008, at 10:19 PM, Yiling Qi wrote: > Thanks for your kind response before, I have tried the find-k > function, it could work well but still not completely satisfy my > concern, since it can give out k(w), however what I would like to > get is a relationship between kx/ky and propagation constant beta(q) > which in my situation meet the solution form ψ=exp(-iqz)u(x,y) . If > I set kdir in find-k function to be along kz direction, then the > output is still no related with the other two directions. So do you > have any idea to help me solve this problem? Thanks a lot for your > attention. I don't understand your question. If you have something like a waveguide, i.e. localized states in the xy directions, then kx and ky are not meaningful. You should just use find-k along the z direction and you will get kz = -q, and the eigenmode is the u(x,y) function. Steven _______________________________________________ mpb-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/mpb-discuss