Journal ArticleDOI
Polarization converter for higher-order laser beams using a single binary diffractive optical element as beam splitter
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TLDR
A new approach to generating a pair of initial beams for a polarization converter that operates by summing up two opposite-sign circularly polarized beams is proposed.Abstract:
We propose a new approach to generating a pair of initial beams for a polarization converter that operates by summing up two opposite-sign circularly polarized beams. The conjugated pairs of vortex beams matched with laser modes are generated using binary diffractive optical elements (DOEs). The same binary element simultaneously serves two functions: a beam shaper and a beam splitter. Two proposed optical arrangements are compared in terms of alignment complexity and energy efficiency. The DOEs in question have been designed and fabricated. Natural experiments that demonstrate the generation of vector higher-order cylindrical beams have been conducted.read more
Citations
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Journal ArticleDOI
Simple phase optical elements for narrowing of a focal spot in high-numerical-aperture conditions
TL;DR: In this paper, it was shown that a decrease in the size of the focal spot produced by a high numerical aperture focusing system comes as the result of the spatial redistribution of different electric field components in the focal region.
Journal ArticleDOI
Vortex phase elements as detectors of polarization state.
TL;DR: It is shown that the diffractive axicon more precisely detects the polarization state than does the micro-objective with the same NA and that Sharp focusing is necessary to identify the polarized state in more detail.
Journal ArticleDOI
Generation of cylindrical vector beams of high orders using uniaxial crystals
TL;DR: In this article, the generation of cylindrical vector beams in birefringent crystals is studied analytically and experimentally in paraxial and non-paraxial regimes.
Journal ArticleDOI
Strengthening the longitudinal component of the sharply focused electric field by means of higher-order laser beams
TL;DR: This work has validated the growth of the longitudinal component in the focus for high-order modes at moderate NA=0.6-0.8, and essential lower sidelobes of Bessel modes, in comparison with LG modes.
Journal ArticleDOI
A technique for simultaneous detection of individual vortex states of Laguerre–Gaussian beams transmitted through an aqueous suspension of microparticles
Svetlana N. Khonina,Svetlana N. Khonina,Sergey V. Karpeev,Sergey V. Karpeev,Vyacheslav D. Paranin +4 more
TL;DR: In this paper, a technique for simultaneous detection of individual vortex states of the beams propagating in a randomly inhomogeneous medium is proposed, which relies on the correlation method that is invariant to the beam wandering.
References
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Journal ArticleDOI
Cylindrical vector beams: from mathematical concepts to applications
TL;DR: An overview of the recent developments in the field of cylindrical vector beams is provided in this paper, where the authors also discuss the potential of using these beams in other fields.
Journal ArticleDOI
Generating radially polarized beams interferometrically.
TL;DR: Two interferometric techniques for converting a linearly polarized laser beam into a radially polarized beam with uniform azimuthal intensity are described.
Journal ArticleDOI
Efficient radially polarized laser beam generation with a double interferometer.
TL;DR: Conversion of a linearly polarized CO(2) laser beam into a radially polarized beam is demonstrated with a novel double-interferometer system that will be used in upcoming laser particle acceleration experiments.
Journal ArticleDOI
Simple interferometric technique for generation of a radially polarized light beam.
Nicolas Passilly,Renaud de Saint Denis,Kamel Ait-Ameur,François Treussart,Rolland Hierle,Jean-François Roch +5 more
TL;DR: It is shown that the degree of radial polarization is maximum at a given distance from theinterferometer output port that depends on the diameter of the incident beam at the interferometer input port.
Journal ArticleDOI
Encoded binary diffractive element to form hyper-geometric laser beams
Svetlana N. Khonina,S A Balalayev,Roman V. Skidanov,Victor V. Kotlyar,B Päivänranta,Jari Turunen +5 more
TL;DR: In this article, a binary diffractive optical element (1500 × 1500 × 1500 pixels, diameter 4.5mm) is designed by partial encoding and fabricated by direct electron beam writing in SiO2.