We present a study of the interference of light produced by a pair of mutually correlated Gaussian Schell-model sources. The spatial distributions of the fields produced by these sources are symmetric with respect to a plane through their common center and differ by a phase factor exp(i phiv). When phiv=0, the resulting radiation is a beam with an intensity distribution that displays a narrow bright line at its center. When the sources can be regarded as Collett-Wolf sources, the resulting bright line diverges much more slowly than the beam itself. When phiv=pi the radiated beam has an intensity distribution with a narrow dark line at its center. The theoretical results are supported by experimental results obtained by use of a modified Michelson interferometer and suggest that the interference of a pair of correlated Collett-Wolf beams can be used to produce a pseudo-nondiffracting beam.
© 2005 Optical Society of America
(030.1670) Coherence and statistical optics : Coherent optical effects
(030.5770) Coherence and statistical optics : Roughness
(240.0240) Optics at surfaces : Optics at surfaces
(290.5880) Scattering : Scattering, rough surfaces
Zu-Han Gu, E. R. Méndez, M. Ciftan, T. A. Leskova, and A. A. Maradudin, "Interference of a pair of symmetric Collett-Wolf beams," Opt. Lett. 30, 1605-1607 (2005)