Quality descriptors of optical beams based on centred reduced moments II: retrieving of the complex degree of spatial coherence through the spot moments

摘要

A method to retrieve the magnitude and phase of the complex degree of spatial coherence of quasi-homogeneous Schell-model beams, is presented. To apply it only the recording of the spot intensity is required. Then, centred reduced moments of the spot are calculated, which are used as coefficients of a series to expand the complex degree of spatial coherence. Numerical results for rotational symmetric, astigmatic and comatic distorted Hermit-Gaussian Schell-model spots are shown together with the Fourier spectra of the corresponding spots, in order to show their equivalences.