Journal ArticleDOI
Comparative investigation of nonparaxial mode propagation along the axis of uniaxial crystal
TLDR
In this article, it was shown that the nonparaxial laser modes propagating along the crystal axis are periodically oscillating owing to polarization conversion, and the oscillation period for Bessel beams is inversely proportional to the square of the spatial frequency of the laser mode and the difference between the dielectric constants of an anisotropic crystal.Abstract:
We compare nonparaxial propagation of Bessel and Laguerre–Gaussian modes along the axis of anisotropic media. It is analytically and numerically shown that the nonparaxial laser modes propagating along the crystal axis are periodically oscillating owing to polarization conversion. The oscillation period for Bessel beams is inversely proportional to the square of the spatial frequency of the laser mode and the difference between the dielectric constants of an anisotropic crystal. So, for higher spatial frequency of Bessel beams, we will get shorter period of oscillations. For a linearly polarized light, there is a periodic redistribution of the energy between the two transverse components, and for a beam with the circular polarization, the energy is transferred from the initial beam to a vortex beam and backward. Similar periodic behavior is observed for the high-order in radial index Laguerre–Gaussian beams. However, it is true only at short distances. As the distance increases, the frequency of periodici...read more
Citations
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Journal ArticleDOI
Modern Types of Axicons: New Functions and Applications.
TL;DR: In this paper, four different and special approaches for creating nondiffracting beams in axicons are compared: Diffractive axicons, meta-axicons-flat optics, spatial light modulators, and photonic integrated circuit-based axicons.
Journal ArticleDOI
Astigmatic transformation of Bessel beams in a uniaxial crystal
TL;DR: In this article, the influence of the polarization direction of radiation relative to the c-axis of a crystal on electric field components of the ordinary and the extraordinary Bessel beams is investigated.
Journal ArticleDOI
Spin–orbit photonic interaction engineering of Bessel beams
TL;DR: In this paper, the intensity, phase, and polarization structure of Bessel light beams using a homogeneous birefringent axicon is analyzed and various kinds of spatially modulated free-space light fields are predicted depending on the nature of the incident light field impinging on the birefitting axicon.
Journal ArticleDOI
Variable transformation of singular cylindrical vector beams using anisotropic crystals.
Svetlana N. Khonina,Alexey P. Porfirev,Alexey P. Porfirev,Nikolay L. Kazanskiy,Nikolay L. Kazanskiy +4 more
TL;DR: The proposed approach allows one to perform the visual recognition of cylindrically-polarised vector beams of various orders and can be used for the demultiplexing of information channels in the case of polarisation-division multiplexing.
Journal ArticleDOI
Implementation of ordinary and extraordinary beams interference by application of diffractive optical elements
TL;DR: In this article, a comparative analysis of the merits and lack of diffractive and refractive axicons in problems of formation non-paraxial Bessel beams has shown the preferability of the diffractive optics application in crystal optics.
References
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Journal ArticleDOI
Diffraction-free beams.
TL;DR: The first experimental investigation of nondiffracting beams, with beam spots as small as a few wavelengths, can exist and propagate in free space, is reported.
Journal ArticleDOI
Optical spin-to-orbital angular momentum conversion in inhomogeneous anisotropic media
TL;DR: An optical process in which the spin angular momentum carried by a circularly polarized light beam is converted into orbital angular momentum, leading to the generation of helical modes with a wave-front helicity controlled by the input polarization is demonstrated.
Book
Crystal Optics with Spatial Dispersion, and Excitons
TL;DR: In this article, the complex dielectric-constant tensor and normal waves in a medium are used to calculate the tensor tensor in a crystal, and a classification of the States of Mechanical Excitons is given.