Abstract

It was shown not long ago that complete spatial coherence of light at a pair of points in the space–time domain may be interpreted as a manifestation of so-called “statistical similarity” between the fluctuating field at the two points. In this Letter, we consider complete spatial coherence at a pair of points in the space–frequency domain and derive a condition that the field at those points must obey. We illustrate the usefulness of the condition by an example.

© 2011 Optical Society of America

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