title: Rotational frequency shifts in partially coherent optical fields.
abstract: We study the frequency shifts taking place when a random, stationary optical field rotates with respect to an observer. The field is expanded in terms of fully coherent Laguerre-Gaussian basis modes, for which the rotational frequency shifts have been studied previously. We demonstrate the formalism by considering the spectrum of a Gaussian Schell-model field, and show that for a spatially highly incoherent field, significant spectral changes can be expected.
authors.affiliation: Optics and Molecular Materials, Helsinki University of Technology, Finland. Hautakorpi@tkk.fi
authors.forename: M
authors.initials: M
authors.lastname: Hautakorpi
authors.forename: J
authors.initials: J
authors.lastname: Lindberg
authors.forename: T
authors.initials: T
authors.lastname: Setälä
authors.forename: M
authors.initials: M
authors.lastname: Kaivola