%0 Journal Article %A Piquero Sanz, Gemma María %A Mejías Arias, Pedro Miguel %A Martínez Herrero, María Rosario %T On the propagation of the kurtosis parameter of general beams %D 1995 %@ 0030-4018 %U https://hdl.handle.net/20.500.14352/58853 %X The behaviour of the kurtosis parameter of a partially coherent beam that freely propagates is investigated. A general classification scheme of light beams is given in terms of the number of extremals of the kurtosis in free space. Propagation through ABCD optical systems is also considered and a number of general properties of the kurtosis parameter are provided concerning the relationship between the extremals of the kurtosis and the position of the beam waist. %~