I have a question about excitation with two angled plane waves. I would be grateful if you could help me.
My simulation file has been attached. It is only free space, and I want to see the incident fields to be sure that I have a correct excitation for the future steps. I am using TFSF, and PMLs in all six directions. My plane waves are as follows: 1) propagating at 45 degrees between x and z direction. The E field is polarized at 45 degrees between -x and z directions. 2) propagating at 45 degrees between -x and z direction. The E field is polarized at 45 degrees between x and z directions.
The analytical result is easy (superposition of two plane waves). At x=0 plane, we expect to see Ex=0. I have written the following analytical solutions:
Ex = E02jsin(kx x) exp(-j kz z) / sqrt(2)
Ez = E02cos(kx x) exp(-j kz z) / sqrt(2)
My problem is that I cannot see this result. The following figure shows the real part of Ex at x=0 plane (monitor_1 in the file):
which is in contrary to the analytical solution that says Ex=0 at x=0 plane.
I would be so grateful if you could check my file and let me know how I can fix this problem. Generally, my simulation is a nano-hole in a metallic sheet illuminated by these two plane waves.
Thank you and best regards.
Test_incident_E_two_PWs.fsp (715.5 KB)