title: Intensity correlation properties of high-order optical vortices passing through a rotating ground-glass plate.
abstract: We study the intensity correlation properties of optical vortices passing through a rotating ground-glass (RGG) plate and compare them with those of the TEM(00) mode of an He-Ne laser beam passed through the same RGG. We have observed that the intensity correlation curves for optical vortices decrease much faster than the corresponding curve for a TEM(00) mode of the He-Ne laser. The rate of decay of the correlation increases with the increase of order of the vortices. Our experimentally observed results are supported by exact analytical results.
authors.affiliation: Physical Research Laboratory, Navrangpura, Ahmedabad, 380009 India. ashokk@prl.res.in
authors.forename: Ashok
authors.initials: A
authors.lastname: Kumar
authors.forename: J
authors.initials: J
authors.lastname: Banerji
authors.forename: R P
authors.initials: RP
authors.lastname: Singh