title: Optical polarization singularities and elliptic stationary points.
abstract: Polarization singularities and elliptic stationary points (collectively, elliptic critical points) were measured experimentally via the complex Stokes field S1 + iS2, where S1 and S2 are Stokes parameters. This new, easily implemented method yielded detailed, high-resolution experimental data for all elliptic critical points. These data confirm with high precision the elliptic-field topological sign rule, loop rules, and Stokes singularity relations introduced recently.
authors.affiliation: Institute of Physics, National Academy of Science of Ukraine, 46 Prospekt Nauki, Kiev-28, 03650 Ukraine. marats@vortex.kiev.ua
authors.forename: Marat S
authors.initials: MS
authors.lastname: Soskin
authors.forename: Vladimir
authors.initials: V
authors.lastname: Denisenko
authors.forename: Isaac
authors.initials: I
authors.lastname: Freund