The twisted Gaussian Schell-model (GSM) beams, recently introduced by Simon and Mukunda [ J. Opt. Soc. Am. A 9, 95 ( 1993)], are interpreted in physical-optics terms by decomposition of such beams into weighted superpositions of overlapping, mutually uncorrelated but spatially coherent component fields. The decomposition provides considerable physical insight into the propagation characteristics of the twisted GSM beams and also suggests convenient practical methods for generating these novel wave fields. Key properties of the twisted GSM beams are demonstrated experimentally by use of an acousto-optic coherence control technique to supply the necessary partially coherent fields.
© 1994 Optical Society of America
Original Manuscript: September 21, 1993
Manuscript Accepted: November 19, 1993
Published: June 1, 1994
Ari T. Friberg, Eero Tervonen, and Jari Turunen, "Interpretation and experimental demonstration of twisted Gaussian Schell-model beams," J. Opt. Soc. Am. A 11, 1818-1826 (1994)