I want to simulate the reflection spectrum from Al2O3 glass substrate. Here is the schematic.
The x span and y span was 1500nm. The z span was 3000nm. The auto shutoff min was set to be 1e-8.
However, the autoshut did not triggered, the autoshut level was somehow stuck at e-7. After I lowered the autoshut level to 1e-6, I obtained this reflection curve.
I also tried to change the x max bc and y max bc to anti-symmetric and symmetric, the autoshut was triggered at 1e-8 and the reflection curve is like that.
So, my question is
- why in the non-periodic case, the autoshut level is stuck?
- which reflection curve is the correct one?
(I tend to use the non-periodic bc because later on i will simulate the scattering of a nanoparticle on a substrate)
Thanks for any kind of help.