Alieva Krasheninnikova, TatianaBastiaans, Martin J.2023-06-202023-06-201999-09-010146-959210.1364/OL.24.001206https://hdl.handle.net/20.500.14352/59383© 1999 Optical Society of AmericaThe relationship between the mode content and the fractional Fourier and fractional Hankel transforms of a function is established. It is shown that the Laguerre-Gauss spectrum of a rotationally symmetric wave front can be determined from the wave front's fractional Hankel transforms taken at the optical axis.engjournal articlehttp://dx.doi.org/10.1364/OL.24.001206http://www.opticsinfobase.org/open access535Fourier-transformsÓptica (Física)2209.19 Óptica Física