Beyond Young’s experiment: time-domain correlation measurement in a pinhole array

Abstract

Time-domain analysis of field correlations provided by the interferogram from a nonredundant pinhole array is performed. It is shown that the described single measurement is identically equal to a series of Young’s two-pinhole experiments. Proper postmeasurement analysis, taking into account the finite coherence time of the source, results in a sampling of the spatial–temporal coherence function.