For example, I would like to simulate nonlinear response from the linear response simulation for plane wave incidence at an angle. I know that using Lorentz reciprocity, we can obtain it and there are papers for normal incidence case. One such case is described by DOI: 10.1038/NMAT4214. But this method is only described for normal incidence case. What and how should we modify it for the off-normal incidence case.
I would like to explain experimental SHG results of periodic metasurface for angled illuminations.
Naively, I would say that the intensity simply scales with the cosine of the incidence angle, but one probably has to be a bit more careful here. If you know the complex-valued refractive index of your metamaterial, you can simply apply Fresnel's equations to determine the field strength and intensity inside the material for arbitrary incidence angle.
- Badges
- Science topic
- Similar topics
- Papers