title: Devising genuine spatial correlation functions.
abstract: The choice of the mathematical form of spatial correlation functions for optical fields is restricted by the constraint of nonnegative definiteness. We discuss a sufficient condition for ensuring the satisfaction of such a constraint.
authors: Università Roma Tre, Dipartimento di Fisica, and CNISM, Via della Vasca Navale 84, I-00146 Rome, Italy. gori@uniroma3.it
authors: F
authors: F
authors: Gori
authors: M
authors: M
authors: Santarsiero