Reconstruction algorithm of the refractive index of a cylindrical object from the intensity measurements of the total field

A reconstruction algorithm for determining the complex refractive index of the object from measurements of the intensity of the total field is presented. The algorithm is based on an optimization procedure. The simulated results show that the algorithm is very effective in reconstructing refractive index distributions to which the first-order Born approximation cannot be applied. © 1997 John Wiley & Sons, Inc. Microwave Opt Technol Lett 14, 182–188, 1997