In SI unit yes the wave vector should be 2pi/a. but in the sweep, it samples it (0~0.5)*(2pi/a) and the result only uses (0~0.5). As mentioned previously, the absolute values of the wave vectors are applied. Maybe the file should not use "k", but use n_k to represent wave vector sampling n_k*k_max where k_max=2pi/a. The sweep kx, ky actually are the normalized values.
As you can see:
FDTD applies the correct wave vector whereas "dipole_cloud" is the normalized, sampling point. Do not be confused with the symbols.
As you can see:
FDTD applies the correct wave vector whereas "dipole_cloud" is the normalized, sampling point. Do not be confused with the symbols.
You are navigating away from the AIS Discovery experience