Atoms, Spectra, Radiations

JETP Letters

, 88:418

First online:

Polarization singularities in partially coherent combined beams

  • Ch. V. FeldeAffiliated withChernovtsy National University
  • , A. A. ChernyshovAffiliated withChernovtsy National University
  • , G. V. BogatyryovaAffiliated withNational Technical University “Kiev Polytechnic Institute”
  • , P. V. PolyanskiiAffiliated withChernovtsy National University Email author 
  • , M. S. SoskinAffiliated withInstitute of Physics, National Academy of Sciences of Ukraine

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

Vector singularities are predicted and discovered experimentally in partially polarized combined fields formed by incoherent superposition of orthogonally polarized beams. Such singularities are U contours with zero degree of polarization and isolated P points with unit degree of polarization centered at vortices of the orthogonally polarized component of the combined beam. Crossing a U contour switches the polarization state to the orthogonal one. The above-mentioned singularities are adequately described in terms of the complex degree of polarization in the Stokes-space representation. It is shown that the field elements corresponding to the extrema of the complex degree of polarization form the vector skeleton of a partially coherent nonuniformly polarized field.

PACS numbers

42.25.Ja 42.25.Kb 42.30.Ms