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Intensity correlation properties of high-order optical vortices passing through a rotating ground-glass plate
Ashok Kumar1, J Banerji, R P Singh
1Physical Research Laboratory, Navrangpura, Ahmedabad, 380009 India. ashokk@prl.res.in
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.
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