The physical conditions for observing the longitudinal spatial coherence of light of an extended thermal source in interference experiments are defined. For experimental verification of these conditions a Michelson interferometer with a longitudinal scanning mirror was used. The influence of the longitudinal spatial coherence of thermal light on a fringe envelope is demonstrated experimentally.
© 2004 Optical Society of America
Vladimir Ryabukho, Dmitry Lyakin, and Mikhail Lobachev, "Influence of longitudinal spatial coherence on the signal of a scanning interferometer," Opt. Lett. 29, 667-669 (2004)