A Python-based scattering-matrix transfer matrix method (TMM) solver.
There are two accepted formats for layer input. A layer can be described with its permittivity and permeability, like so:
layer = [epsilon, myu, thickness]Or, it can be represented with it's refractive index, like so:
layer = [refractive index, thickness]Thickness is assumed to be semi-infinite for the reflection and transmission layers
As a result we leave their values as None.
layers = [
[1.0, 1.0, None], # reflection layer
[2.5, 2.0, 5e-4], # epsilon, myu, thickness
[1.5 , 2e-4], # refractive index, thickness
[3.5, 1.0, 5e-4], # epsilon, myu, thickness
[1.0, 1.0, None], # transmission layer
]
theta = 0
phi = 0
pte = 0.5
ptm = 0.5
wavelength = 1e-6
R, T = tmm_solve(layers, theta, phi, pte, ptm, wavelength)