We implement experimentally a simple method for accurate measurements of phase distributions of scalar light fields. The method is based on the polarimetric technique for recording the polarization maps of vector fields, where coaxial superposition of orthogonally polarized reference and signal beams allows the signal phase to be reconstructed from the polarization map of the total field. We demonstrate this method by resolving topologically neutral pairs of closely positioned vortices in a speckle field and recovering the positions of vortices within a Laguerre-Gaussian beam with the topological charge three.
© 2008 Optical Society of America
Original Manuscript: November 2, 2007
Revised Manuscript: November 25, 2007
Manuscript Accepted: November 26, 2007
Published: December 21, 2007
Vladimir G. Denisenko, Alexander Minovich, Anton S. Desyatnikov, Wieslaw Krolikowski, Marat S. Soskin, and Yuri S. Kivshar, "Mapping phases of singular scalar light fields," Opt. Lett. 33, 89-91 (2008)