title: Spectral anomalies in a Fraunhofer diffraction pattern.
abstract: We show that spectacular spectral changes take place in the vicinity of the dark rings of the Airy pattern formed with spatially coherent, polychromatic light diffracted at a circular aperture.
authors.forename: Sergey A
authors.initials: SA
authors.lastname: Ponomarenko
authors.forename: Emil
authors.initials: E
authors.lastname: Wolf