Vectorial partially coherent flat-topped beams and their nonparaxial propagation

摘要

The concept of vectorial partially coherent flat-topped beams is proposed, and their nonparaxial propagation in free space is studied in detail. Based on the vector Rayleigh diffraction integral formulae, the analytical propagation expressions for the cross-spectral density matrix of the polarized vectorial nonparaxial partially coherent flat-topped beams are derived and applied to study the nonparaxial propagation properties of vectorial partially coherent flat-topped beams. The effect of propagation parameters on the intensity and the coherence property of the nonparaxial vectorial partially coherent fiat-topped beam is illustrated and analyzed comparatively with the corresponding paraxial results.