Learning Forum

[doezs]

Hello. When I send the light at a 45 degree angle and select boundary conditions as Periodic, I can see that the light comes at a 45 degree angle on the movie monitor, but when I set the boundary conditions as Bloch and everything else remains the same, the light travels parallel to the surface on the movie monitor, i.e. 180 degrees. What should I do to make the light travel at a 45 degree angle in the movie in boundary conditions?

[Guilin Sun]

I believe the movie result you observed is wrong, even though it has angle. 

When source has angle theta not zero, in the angled plane you should use Bloch BCs. The result of magnitude is uniform, because it is plane wave. If you want to see the change of the wave form, you need to check the real or imaginary E, which has phase term included.

Please consider the physics of the results.