Here indices r and a denote orthogonal structures: radially polarized and azimuthally polarized, respectively. Orthogonal polarization structures of P-modification in Cartesian basis are described by Jones vectors of the following type: 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. Polarization-Symmetric Structures and Their Correlation with Optical Vortices In this work, the difference between the properties of polar and non-polar spiral polarization rotators is analyzed.Ģ. This article is a continuation of, where, along with polarization-symmetric structures of optical vortices, spiral polarization elements were considered, except for spiral rotators. 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. The corner-cube reflector with special faces coating as new diffraction polarization-optical devices is considered in. In new polarization convertor, based on diffractive optical elements, is proposed. For example, sharp focusing is applied to identify the polarization state. Much less attention is paid to polarization characteristics and diffraction polarization-optical devices. At the same time, mainly amplitude-phase characteristics of axisymmetric beams and optical vortices are discussed. The beams with axisymmetric polarization structure have two modifications, depending on rotation direction of the polarization ellipse axis and are closely related to optical vortices.Ĭurrently, variety of data on optical vortices has been accumulated: production methods, transformation, analysis are considered in and others works, diversified bibliography on this topic is given in. After a complete rotation of the radius vector (returning to the initial value of the azimuth) the axis of the polarization ellipse makes s full turns. Polarization structures with axial symmetry are characterized by the following: in the cross-sectional plane a certain orientation of the polarization ellipse (polarization azimuth ) is a constant along the radius vector, outgoing from the beam axis, but changes in proportion to coordinate azimuth. Study of polarization-inhomogeneous beams allows to conclude that, despite the complex structure, such beams have certain types of polarization symmetry.
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