Alieva, Tatiana KrasheninnikovaBastiaans, Martin J.2023-06-202023-06-201999-09-011. D. Mendlovic and H. M. Ozaktas, J. Opt. Soc. Am. A 10, 1875 (1993). 2. L. Yu, Y. Ku, X. Zheng, M. C. Huang, M. Chen, W. Huang, and Z. Zhu, Opt. Lett. 23, 1158 (1998). 3. A. W. Lohmann, J. Opt. Soc. Am. A 10, 2181 (1993). 4. A. Sahin, H. M. Ozaktas, and D. Mendlovic, Appl. Opt. 37, 2130 (1998). 5. M. G. Raymer, M. Beck, and D. F. McAlister, Phys. Rev. Lett. 72, 1137 (1994).0146-959210.1364/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