Fine Structure of Optical Vortices in Linearly Polarized Laguerre–Gaussian Beams in Oblique Beams Propagating a Uniaxial Crystal

Traditional ideas about linearly polarized paraxial beam propagation along the optical axis of a uniaxial crystal suggest that at the crystal exit face, after propagation through the polarizer, the beam will form an intensity distribution in the form of a conoscopic pattern. Any violation of axial p...

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Main Authors: Yuriy Egorov, Alexander Rubass
Format: Article
Language:English
Published: MDPI AG 2023-06-01
Series:Photonics
Subjects:
Online Access:https://www.mdpi.com/2304-6732/10/6/684
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author Yuriy Egorov
Alexander Rubass
author_facet Yuriy Egorov
Alexander Rubass
author_sort Yuriy Egorov
collection DOAJ
description Traditional ideas about linearly polarized paraxial beam propagation along the optical axis of a uniaxial crystal suggest that at the crystal exit face, after propagation through the polarizer, the beam will form an intensity distribution in the form of a conoscopic pattern. Any violation of axial propagation was considered as a perturbation of the conoscopic pattern and was not taken into account. Nevertheless, this process opens up a wide variety of transformations of polarization singularities caused by weak perturbations. In this article, the behavior of linearly polarized low-order Laguerre–Gauss beams in a uniaxial crystal is considered. The existence of a fine structure of radiation on the output face of a uniaxial crystal and the dependence of this fine structure on the parameters of the crystal and the beam are shown.
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spelling doaj.art-28eb8fdd956440778006754b0cb567002023-11-18T12:08:17ZengMDPI AGPhotonics2304-67322023-06-0110668410.3390/photonics10060684Fine Structure of Optical Vortices in Linearly Polarized Laguerre–Gaussian Beams in Oblique Beams Propagating a Uniaxial CrystalYuriy Egorov0Alexander Rubass1Physics and Technology Institute, V.I. Vernadsky Crimean Federal University, Vernadsky Prospect 4, 295007 Simferopol, RussiaPhysics and Technology Institute, V.I. Vernadsky Crimean Federal University, Vernadsky Prospect 4, 295007 Simferopol, RussiaTraditional ideas about linearly polarized paraxial beam propagation along the optical axis of a uniaxial crystal suggest that at the crystal exit face, after propagation through the polarizer, the beam will form an intensity distribution in the form of a conoscopic pattern. Any violation of axial propagation was considered as a perturbation of the conoscopic pattern and was not taken into account. Nevertheless, this process opens up a wide variety of transformations of polarization singularities caused by weak perturbations. In this article, the behavior of linearly polarized low-order Laguerre–Gauss beams in a uniaxial crystal is considered. The existence of a fine structure of radiation on the output face of a uniaxial crystal and the dependence of this fine structure on the parameters of the crystal and the beam are shown.https://www.mdpi.com/2304-6732/10/6/684optical vorticesuniaxial crystalLaguerre–Gauss beam
spellingShingle Yuriy Egorov
Alexander Rubass
Fine Structure of Optical Vortices in Linearly Polarized Laguerre–Gaussian Beams in Oblique Beams Propagating a Uniaxial Crystal
Photonics
optical vortices
uniaxial crystal
Laguerre–Gauss beam
title Fine Structure of Optical Vortices in Linearly Polarized Laguerre–Gaussian Beams in Oblique Beams Propagating a Uniaxial Crystal
title_full Fine Structure of Optical Vortices in Linearly Polarized Laguerre–Gaussian Beams in Oblique Beams Propagating a Uniaxial Crystal
title_fullStr Fine Structure of Optical Vortices in Linearly Polarized Laguerre–Gaussian Beams in Oblique Beams Propagating a Uniaxial Crystal
title_full_unstemmed Fine Structure of Optical Vortices in Linearly Polarized Laguerre–Gaussian Beams in Oblique Beams Propagating a Uniaxial Crystal
title_short Fine Structure of Optical Vortices in Linearly Polarized Laguerre–Gaussian Beams in Oblique Beams Propagating a Uniaxial Crystal
title_sort fine structure of optical vortices in linearly polarized laguerre gaussian beams in oblique beams propagating a uniaxial crystal
topic optical vortices
uniaxial crystal
Laguerre–Gauss beam
url https://www.mdpi.com/2304-6732/10/6/684
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