I do understand that both transmission and reflection coefficients do somehow need to include both refractive indices at frequencies ω and 2ω, since the bound and free waves have different refractive indices and the solution of the inhomogeneous solution is the sum of the homogeneous solution...
Hello everyone, this is my first post so I don't know whether or not this is the right thread to be asking this question (if so I am sorry). I am currently working on my thesis where I am determining the thickness of a GaN crystal through second harmonic generation. However in a article...