title: Observing the fractional Fourier transform by free-space Fresnel diffraction.
abstract: The fractional Fourier transform of an object can be observed in the free-space Fresnel diffraction pattern of the object.
authors.forename: J
authors.initials: J
authors.lastname: Hua
authors.forename: L
authors.initials: L
authors.lastname: Liu
authors.forename: G
authors.initials: G
authors.lastname: Li