title: Polarized vortices in optical speckle field: observation of rare polarization singularities.
abstract: Using a recent method able to characterize the polarimetry of a random field with high polarimetric and spatial accuracy even near places of destructive interference, we study polarized optical vortices at a scale below the transverse correlation width of a speckle field. We perform high accuracy polarimetric measurements of known singularities described with an half-integer topological index and we study rare integer index singularities which have, to our knowledge, never been observed in a speckle field.
authors.forename: Jan
authors.initials: J
authors.lastname: Dupont
authors.forename: Xavier
authors.initials: X
authors.lastname: Orlik