SCHELL-MODEL BEAMS AND INTERFERENCE FIELDS

Some interesting characteristics Of the propagation of Schell-model be ams in the Fraunhofer and Fresnel domains are discussed. Particularly, the concept of interference field as support of the intensity transfe r through the propagation of Schell-model beams. The primary source of such a field are radiators pairs, which behave as partial coherent Yo ung pairs in Fraunhofer domain. In Fresnel domain, the Fresnel zones i ntroduce an additional Michelson-like modulation. Furthermore, the Fou rier transform of a Schell-model beam is also a Schell-model beam, whi ch is proportional to a triple correlation. So, each Schell-model beam can be considered as the bispectrum of the another.