We study, experimentally as well as theoretically, the spatial coherence function and the Wigner distribution function for one-dimensional projections of optical vortices of different orders. The information entropy derived from the spatial coherence functions has been used to quantify the information content of the vortices and compared with those obtained for the Gaussian beam. The experimental results verify the theoretical findings of Agarwal and Banerji [ Opt. Lett. 27, 800 (2002)].
© 2011 Optical Society of America
Diffraction and Gratings
Original Manuscript: January 18, 2011
Revised Manuscript: February 24, 2011
Manuscript Accepted: February 25, 2011
Published: March 25, 2011
Ashok Kumar, Shashi Prabhakar, Pravin Vaity, and R. P. Singh, "Information content of optical vortex fields," Opt. Lett. 36, 1161-1163 (2011)