A Fourier-invariant squared Laguerre-Gaussian vortex beam - Kozlova, E.S.; Savelyeva, A.A.; Kovalev, A.A.; Kotlyar, V.V. (Kompʹûternaâ optika, 2023)
Keywords: fourier invariance; fourier transform; fresnel diffraction; laguerre-gauss mode; optical vortex; topological charge