Hi, this is purely a mathematical question related to diffraction. Generally, if your source is ten times the wavelength, the output radiation divergence may be estimated to be one tenth of radian. So you have to make the source plane as big as possible. Another approach giving a precise plane wave, is to use the Bloch periodic boundaries. Regards, F.
2013/4/8, a g <antigrip...@yandex.com>: > Hello, > > How can I define a short laser pulse with a very small solid angle > (obviously) in MEEP? When I am using a gaussian source I get the source, > that is shining in all directions and not in one direction. > > > > _______________________________________________ > meep-discuss mailing list > meep-discuss@ab-initio.mit.edu > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss > _______________________________________________ meep-discuss mailing list meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
