I was simulating the scattering from a nanodisk by normal incidence.
With a spherical PML, the scattering field should be basically symmetric below and above the disk plane. It is indeed so when I simulate 400 nm and 430 nm.
However when I start to sweep the wavelength, 400 nm to 430 nm, the 430 nm case behave very unexpectedly with the PML. Field penetrates half of the PML and a very strong reflection is observed.
I start to think this is a bug of the comsol 4.3, where the PML somehow did not recognize the new wavelength during sweeping. Maybe I did something stupid, I don't know anyone else experienced this before?
With a spherical PML, the scattering field should be basically symmetric below and above the disk plane. It is indeed so when I simulate 400 nm and 430 nm.
However when I start to sweep the wavelength, 400 nm to 430 nm, the 430 nm case behave very unexpectedly with the PML. Field penetrates half of the PML and a very strong reflection is observed.
I start to think this is a bug of the comsol 4.3, where the PML somehow did not recognize the new wavelength during sweeping. Maybe I did something stupid, I don't know anyone else experienced this before?