On Optimal Frequencies for Reconstruction of a One-Dimensional Profile of Gradient Layer’s Refractive Index

Figure 5

The relative error of reconstruction of refractive index for the parabolic layer versus the number of iterations . Refractive index is discontinuous on the layer boundaries. The solid curve corresponds to reconstructing frequencies 20–22 THz, the red dashed curve corresponds to reconstructing frequencies 42–44 THz, and the dotted curve corresponds to reconstructing frequencies 61–63 THz.