> > > Hi Giovanni, > > > > Thanks for your reply and the links. > > > > I am sorry that I didn't make it so clear to my question. As for the > meep > > simulation with dispersive materials, I have no problems and it goes > well. > > At this stage, I just want to theoretically calculate the SPR wavelength > > using the formula mentioned to verify the simulation results. According > to > > the related literatures, the permittivity for a specific wavelength from > > the concerned spectrum is used. However, none gives the reason why that > > wavelength is chosen. I made a calcualtion with different wavelengths, > the > > achieved SPR wavelength differs greatly. Now, I am totally confused. > > > > Tony > > Uni. Freiburg, Germany > > > Ops, sorry, it is me that did not understand the question. But - could you > give a reference for the formula? I understand that it is commonly used, > and it looks vaguely familiar (SP resonance is present, and something that > looks like it comes out from the periodicity - by the way what is the > meaning of i and j?) - but I have never made anything with hole arrays and > I do not know exactly where it does come from. > > Giovanni >
You can find the formula in lots of publications relating with the transmission property of metallic nanohole arrays. The following link gives one of the most important: http://www.opticsinfobase.org/josab/abstract.cfm?uri=josab-16-10-1743 Periodicity plays an important role in the ultimate result. i, j are the scattering orders in the two directions, say X- and Y-axis. Tony
_______________________________________________ meep-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
