Applied Science and Convergence Technology

Fig. 3. (a) Parratt’s approach. n_j is the refractive index of the j-th layer, where n₀ is for air and n_N+1 is for the thick substrate. The first calculation starts at the interface between the N-th layer and substrate, where a multiple scattering within the substrate can be assumed to be zero due to its sufficient thickness. From the Fresnel reflectivity (R_N) and transmittivity (T_N) at z=Z_N where the interface between the N-th layer and the substrate lies, finally

Applied Science and Convergence Technology 2022;31:128~132 https://doi.org/10.5757/ASCT.2022.31.6.128