Bastiaans, Martin J.Alieva Krasheninnikova, Tatiana2023-06-202023-06-202003-12-150146-959210.1364/OL.28.002443https://hdl.handle.net/20.500.14352/51289© 2003 Optical Society of AmericaThe Wigner distribution of rotationally symmetric partially coherent light is considered, and the constraints for its moments are derived. Although all odd-order moments vanish, these constraints lead to a drastic reduction in the number of parameters that we need to describe all even-order moments: whereas in general we have (N + 1) (N + 2) (N + 3)/6 different moments of order N, this number reduces to (1 + N/2)(2) in the case of rotational symmetry. A way to measure the moments as intensity moments in the output planes of (generally anamorphic) fractional Fourier-transform systems is presented.engjournal articlehttp://dx.doi.org/10.1364/OL.28.002443http://www.opticsinfobase.org/open access535OpticsÓptica (Física)2209.19 Óptica Física