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.
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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
Thank you for your advise. I've increased the resolution and the PML
thickness, but my results are still unrealistic and i don't understand why.
Четверг, 4 апреля 2013, 1:04 -07:00 от gursoy akguc :
>as far as I can see, two points come to mind: one is pml being quite small for
>the geometric
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