There is a known bug involving a 3d cell with periodic boundaries and
two or more mirror symmetries: https://github.com/NanoComp/meep/issues/132.
The workaround is to simply remove the mirror symmetries.
On 11/6/20 05:58, Juan Ramón D wrote:
The results from the reflectance spectrum are similar to the results I
expected (comparing with simulations from other people). However I
have some issues I would like to solve:
* When I try to set a symmetry my code explodes. With incidence in
the XZ plane, I set mirror symmetry in the y=0 plane. I defined my
PhC slab in such a way that it is invariant under y=0 reflections,
so I think I should not have any problem. In the first simulation
(without geometry objects) there is no problem, the problem arises
after setting the geometry of the second simulation (with geometry
objects). The result using jupyter notebook is a message saying:
“the kernel appears to have died”.
* When I try to define an amplitude function in the same way as in
http://www.simpetuscloud.com/projects.html#meep_thermal_radiation
I get a similar error: the kernel appears to have died. I have
successfully used the amplitude function in other problems with
point sources but here it does not work. I do not know if this
point is critical for simulating a planewave, since I already get
good results without it. I would be really grateful if someone
could explain if this is strictly necessary and/or why I get this
error.
* Although the results are good in general, I sometimes get dips I
did not expect, could this be band folding associated with my
rectangular lattice?
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