Reply To: scattering calculation with gaussian beam in FDTD

[yuqizhu]

i see. i have a few more questions.

for a gaussian source, is sourceintensity the intensity at the where it is injected? 

when injecting a gaussian source (use thin lens), there seems to be some artifacts near the plane of injection? attached is a pic of the beam's cross sec; there's nothing else in the model. why are there wrinkles? also, in general, how far should the injection plane be from the scatter? i'm putting it below the scatter. 

 

what is 'power' in the rawdata of a cross sec analysis group? why is it a complex number?

I'm still having trouble setting up high-NA gaussian beams. for NA~1, my E field's z- cross sec's still don't look gaussian with some holes at the center. how do i fix this?