Feasibility of generating surface plasmon polaritons with a given orbital momentum on cylindrical waveguides using diffractive optical elements

Knyazev, B. A.; Kameshkov, Oleg E.; Nikitin, A. K.; Pavelyev, V. S.; Choporova, Yu. Yu.

doi:10.18287/2412-6179-2019-43-6-992-1000

Cited by 12 publications

(3 citation statements)

References 42 publications

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“…By optimizing the parameters of the gratings and Bessel beams, one can obtain in the paraxial region a set of ring beams with a given topological charge, which can be used to create an optical trap grating or transfer a mechanical moment to a sequence of microturbines, for example, in microfluidic systems [30,31]. Another possible application is the excitation of vortex surface plasmon polaritons by the endfire coupling technique on a lattice of cylindrical conductors in plasmonic devices [32,33].…”

Section: Discussionmentioning

confidence: 99%

Diffraction of bessel beams on 2D amplitude gratings—a new branch in the talbot effect study

Kotelnikov

Kameshkov

Knyazev

2020

J. Opt.

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In this paper, an analytical theory for the diffraction of a Bessel beam of arbitrary order J l (κr) on a 2D amplitude grating is presented. The diffraction pattern in the main and fractional Talbot planes under certain conditions is a lattice of annular microbeams, the diameters of which depend on the grating period, the illuminating beam diameter, the number of the Talbot plane, and the topological charge l. For the rings near the optical axis, the latter reproduces l of the illuminating beam. Experiments carried out on the Novosibirsk free electron laser at a wavelength λ = 141 µm using gratings with hole diameters of down to d ≈ 2λ, as well as, the numerical simulations, well support the theory. Since the Laguerre-Gaussian beams can be represented as a superposition of Bessel beams, results of this paper can be applied to the analysis of the Talbot effect with the Laguerre-Gaussian beams.

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Section: Discussionmentioning

confidence: 99%

Diffraction of bessel beams on 2D amplitude gratings—a new branch in the talbot effect study

Kotelnikov

Kameshkov

Knyazev

2020

J. Opt.

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“…Интегральная интенсивность излучения (нормированная на максимальное значение) в пределах кадров, показанных на рис. 2, для бинарного (BA) и голографического (HA) аксиконовСовершенные пучки, сформированные описанными выше аксиконами, использовались для генерации вихревых поверхностных плазмон-поляритонов (ВППП) терагерцового диапазона на осесимметричных проводящих линиях[28], которая показала возможность реализации плазмонных мультиплексных передающих линий, предложенных в[29]. Плазмоны, несущие орбитальный угловой момент с |  |  9, возбуждались методом дифракции (end-fire coupling technique) совершенных пучков, показанных на рис.…”

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Terahertz Bessel and "perfect" vortex beams generated with a binary axicon and axicon with continuous relief

et al. 2022

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Comparative studies of characteristics of Bessel and "perfect" vortex beams with a topological charge 9, created using a binary silicon axicon and a "holographic" diamond axicon with continu-ous profile at a wavelength of 141 μm, are carried out. Beams with linear and radial polarization are investigated. An example of the use of a perfect radially polarized beam for the excitation of vortex plasmon-polaritons on a cylindrical conductor is given.

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“…In papers [8,9] we proposed three methods for generating plasmons on a simply-connected cylindrical transmission line using vortex beams created by binary phase axicons [10] and speculated on the opportunity of creating multiplex plasmonic lines. To date, a number of studies on the transmission of plasmons and spoof plasmons, mostly with the terahertz time domain technique, were carried out with smooth or corrugated cylinders and cones [11,12].…”

mentioning

confidence: 99%

Vortex surface plasmon polaritons on a cylindrical waveguide: generation, propagation, and diffraction

Gerasimov

Kameshkov

Knyazev

et al. 2021

J. Opt.

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In this paper, we experimentally demonstrated excitation of terahertz vortex surface plasmon polaritons by end-fire coupling of radially-polarized annular beams with orbital angular momentum (the wavelength was 141 µm, and the topological charges were ±3 and ±9) to a 70 mm long, simply connected axis-symmetric transmission line and their propagation to the end of the line and diffraction into a free wave possessing the same topological charge as the input beam. The diameter of the line exceeded greatly the radiation wavelength, and, in contrast to experiments with nanowires, no azimuthal electromagnetic modes existed. We observed that 18 plasmons, locally excited on the input face perimeter by a wave with topological charge of ±9, traveled rotating over the tapering cylindrical line and transformed into 18 lobes of the decoupled free wave. The evidence of the possibility of the transformation of a vortex beam into vortex plasmons and back into vortex beam with the conservation of the topological charge opens a way for the development of plasmonic communication lines with coding and decoding of information at the free-wave stage. Application of this technique to complex beams consisting of a combination of different vortex modes can be a technological base for the development of multiplex plasmonic communication lines in the terahertz range. Since wave characteristics are easier to record than plasmon characteristics, sorting of free waves by the topological charges can be used for demultiplexing combined plasmons in multiplex systems.

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Feasibility of generating surface plasmon polaritons with a given orbital momentum on cylindrical waveguides using diffractive optical elements

Cited by 12 publications

References 42 publications

Diffraction of bessel beams on 2D amplitude gratings—a new branch in the talbot effect study

Diffraction of bessel beams on 2D amplitude gratings—a new branch in the talbot effect study

Terahertz Bessel and "perfect" vortex beams generated with a binary axicon and axicon with continuous relief

Vortex surface plasmon polaritons on a cylindrical waveguide: generation, propagation, and diffraction

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