Reply To: can I use 2 sources together?

[Guilin Sun]

Currently no optics/electric cosimulation is available. Simply injecting GHz wave will not induce any change of the refractive index or conductivity (photoconductivity), since the material model does not have such behavior. What you need is to calculate the absoption which is used to calculate the change of conductivity, and use the change to modify the material data for optic simulation.

Directly simulation with electronic simulation like CHARGE will need to set the material to be semiconductor. I am not sure if this works for you.

In summary, you will need to find a way to get the photoconductivity change by the THz exciation, and then using FDTD to do the optic simulation. As for what tool you will need for the photoconductivity, it is an open question.