González de Sande, Juan CarlosSantarsiero, MassimoGori, FrancoPiquero Sanz, Gemma María2023-06-192023-06-192014-04-010146-959210.1364/OL.39.001713https://hdl.handle.net/20.500.14352/33572© 2014 Optical Society of America.Generally speaking, the difference between two cross-spectral densities (CSDs) does not represent a correlation function. We will furnish a sufficient condition so that such difference be a valid CSD. Using such a condition, we will show through some examples how new classes of CSDs can be generated.engjournal articlehttp://dx.doi.org/10.1364/OL.39.001713http://www.opticsinfobase.orgopen access535Schell-Model BeamsFlat-Topped BeamPartially Coherent SourcesLight-BeamsPropagationFieldsInterferencePairÓptica (Física)2209.19 Óptica Física