Optical vortices with axisymmetric polarization structure

Visualization of the variance boundaries for the polarization parameters of light on the Poincare sphere

“…In conclusion, we note that with the help of the developed technique based on the parametric information theory, it is possible to study the estimates of any polarization parameters: azimuth, ellipticity, and others. The results of this study can be used to optimize signal processing algorithms and improve the efficiency of optoelectronic devices and systems of a wide profile: from laser Doppler flow velocity meters [7] and quantum optical guidance systems [8,9] to astronomical 3D interferometry systems [10,11].…”

“…Taking into account (2) and using the ratio (5,(8)(9)(10)(11) we can get a visual picture of the variance bounderies of the estimate distributions of the degree of polarization on the Poincare sphere in Cartesian rectangular coordinates, where the abscissa corresponds to the longitude , and the ordinate to the latitude 2 With this representation, the spherical surface is transformed into a rectangle on the plane, the meridians are transformed into parallel vertical lines, and the parallels are stretched the more, the closer they are to the poles. Pole points turn into horizontal lines.…”

Comparative Analysis of the Characteristics of Polar and Non-Polar Spiral Polarization Rotators

“…Polarization-symmetric structures with a regular change of polarization in a beam cross section will be denoted by capital letters indicating the direction of rotation of the semi-major axis of the polarization ellipse: P (counterclockwise) and N (clockwise) when viewed towards the ray direction [19].…”

“…The aim of this work is to study spiral polarization rotators, which-like conventional polarization rotators-exist in two forms: polar and non-polar, and their influence on optical vortices, including in optical resonators. This article is a continuation of [19], where, along with polarization-symmetric structures of optical vortices, spiral polarization elements were considered, except for spiral rotators.…”

Structured light production with the use of polarization interferometer

“…Such cube-corner reflectors form of a six-spot diffraction pattern with each spot having planes of vector E oscillations rotated relative to each other at a certain angle. In [7][8][9] there was considered in theory the so-called polarization interferometer. Such an interferometer is similar to the usual cross-like Michelson interferometer, where both plane mirrors are replaced by the said CCRs.…”