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Critical coupling vortex with grating-induced high Q-factor optical Tamm states / R. G. Bikbaev, D. N. Maksimov, P. S. Pankin [et al.] // Opt. Express. - 2021. - Vol. 29, Is. 3. - P. 4672-4680, DOI 10.1364/OE.416132. - Cited References: 54. - Funding. Ministry of Science and Technology, Taiwan (108-2923E-009-003-MY3); Russian Foundation for Basic Research (19-52-52006); Council on grants of the President of the Russian Federation (MK-46.2021.1.2) . - ISSN 1094-4087
Кл.слова (ненормированные):
Angle of Incidence -- Bound state -- Coupled mode theory -- Critical coupling -- Dielectric grating -- High Q-factor -- Reflectance amplitudes -- Reflection amplitude
Аннотация: We investigate optical Tamm states supported by a dielectric grating placed on top of a distributed Bragg reflector. It is found that under certain conditions the Tamm state may become a bound state in the continuum. The bound state, in its turn, induces the effect of critical coupling with the reflectance amplitude reaching an exact zero. We demonstrate that the critical coupling point is located in the core of a vortex of the reflection amplitude gradient in the space of the wavelength and angle of incidence. The emergence of the vortex is explained by the coupled mode theory.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Imaging and Biomedical Photonics, National Chiao Tung University, Tainan, 71150, Taiwan

Доп.точки доступа:
Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Pankin, P. S.; Панкин, Павел Сергеевич; Chen, K. -P.; Timofeev, I. V.; Тимофеев, Иван Владимирович
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Arkhipkin, V. G.
Diffraction of vortex Gaussian beams from a two-dimensional Raman-induced grating / V. G. Arkhipkin, S. A. Myslivets // Laser Phys. - 2021. - Vol. 31, Is. 6. - Ст. 065401, DOI 10.1088/1555-6611/abf567. - Cited References: 41 . - ISSN 1054-660X. - ISSN 1555-6611

РУБ Optics + Physics, Applied

Кл.слова (ненормированные):
diffraction -- Raman gain -- Talbot effect -- optical vortex beam
Аннотация: In this paper, we study diffraction of a vortex Gaussian probe beam on a two-dimensional (2D) Raman-induced diffraction grating. Both near- and far-field diffraction of a vortex beam is considered. In the near field, quasi-Talbot images occur at specific distances from the grating, which corresponds to the classical Talbot length. Diffraction patterns in the Talbot planes are a periodic 2D array of ring-like vortex beamlets with topological charges (TCs) equal to the illuminating probe beam's charge. The lateral (off-axis) beamlets consist of several overlapping vortices with the TCs l = 1 and l =-1, and their centers (singular points) are offset relative to each other. It is shown that in the near field the TC is conserved, and the total diffraction field represents a single (global) vortex with an effective TC equal to the charge of the vortex probe beam. In the far field, diffraction patterns are also a 2D array of ring-like local vortices with a period depending on the z coordinate. Their TCs are equal to the charge of the probe field. It is shown that in a far field, the diffracted field's total TC is also equal to that of the probe field. We demonstrate that by choosing the pump field parameters, one can effectively control the intensity of diffraction orders.

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Держатели документа:
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович; Архипкин, Василий Григорьевич
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A Bandpass Filter Based on Dielectric Layers with a Strip Conductor Subwavelength Grating at Their Interfaces / B. A. Belyaev, V. V. Tyurnev, A. S. Voloshin [et al.] // Dokl. Phys. - 2020. - Vol. 65, Is. 9. - P. 343-348, DOI 10.1134/S1028335820090013. - Cited References: 12. - This study was supported by the Ministry of Science and Higher Education of the Russian Federation, state assignment no. FEFE-2020-0013 “Development of the Theory of Self-Configurable Machine-Learning Algorithms for Simulating and Predicting Characteristics of Complex Systems” . - ISSN 1028-3358
Кл.слова (ненормированные):
frequency response -- return loss -- passband filter -- insertion loss
Аннотация: The design of a multilayer bandpass filter has been investigated, in which each of the half-wavelength resonators consists of two dielectric layers with outer strip conductor gratings in the form of square grids and inner ones in the form of square patches. The grids serve as mirrors with specified reflective properties, which ensure optimal couplings of the outer resonators with free space and optimal coupling between the resonators. The patch gratings make it possible to tune the resonator eigenfrequency during the filter synthesis. The efficiency of the quasi-static calculation of the frequency response for the layered structure is shown for the case of a lattice period smaller than the wavelength in the dielectric and much smaller than the layer thickness. Since the calculation does not require much computing power, the parametric synthesis of the device can be performed on a conventional personal computer. The measured characteristics of the prototype of the synthesized third-order filter with a fractional passband width of ∼10% and a central passband frequency of ∼10.6 GHz are in good agreement with the calculation. The proposed design allows one to fabricate multilayer panels radio transparent in a certain frequency band for hiding microwave antennas.

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Публикация на русском языке Полосно-пропускающий фильтр из диэлектрических слоев с субволновыми решетками полосковых проводников на границах [Текст] / Б. А. Беляев, В. В. Тюрнев, А. С. Волошин [и др.] // Доклады Академии наук. Физика, технические науки. - 2020. - Т. 494 № 1. - С. 75-81

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Siberian State University of Science and Technology, Krasnoyarsk, 660014, Russian Federation

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Tyurnev, V. V.; Тюрнев, Владимир Вениаминович; Voloshin, A. S.; Волошин, Александр Сергеевич; Leksikov, An. A.; Лексиков, Андрей Александрович; Galeev, R. G.; Shabanov, V. F.; Шабанов, Василий Филиппович
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Refractive index sensing with optical bound states in the continuum / D. N. Maksimov, V. S. Gerasimov, S. Romano, S. P. Polyutov // Opt. Express. - 2020. - Vol. 28, Is. 26. - P. 38907-38916, DOI 10.1364/OE.411749. - Cited References: 56. - The research was supported by the Ministry of Science and High Education of Russian Federation, project no. FSRZ-2020-008. DNM is grateful to Andrey A. Bogdanov for useful discussion . - ISSN 1094-4087
Кл.слова (ненормированные):
Optical constants -- Optics -- Analytic formula -- Bound state -- Dielectric grating -- Differential sensitivity -- Figure of merits -- Optimisation designs -- Perturbative approach -- Refractive index sensing
Аннотация: We consider refractive index sensing with optical bounds states in the continuum (BICs) in dielectric gratings. Applying a perturbative approach we derived the differential sensitivity and the figure of merit of a sensor operating in the spectral vicinity of a BIC. Optimisation design approach for engineering an effective sensor is proposed. An analytic formula for the maximal sensitivity with an optical BIC is derived. The results are supplied with straightforward numerical simulations.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Computational Modeling SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Applied Sciences and Intelligent Systems, National Research Council, Naples, 80131, Italy

Доп.точки доступа:
Maksimov, D. N.; Максимов, Дмитрий Николаевич; Gerasimov, V. S.; Romano, S.; Polyutov, S. P.
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    Arkhipkin, V. G.
    The Talbot effect under selective reflection from a Raman induced grating / V. G. Arkhipkin, S. A. Myslivets // J. Sib. Fed. Univ. Math. Phys. - 2022. - Vol. 15, Is. 6. - P. 687-698 ; Журн. СФУ. Матем. и физика, DOI 10.17516/1997-1397-2022-15-6-687-698. - Cited References: 33. - This work was partially (results for 1D gratings) supported by the Russian Science Foundation (RSF) through Grant 19-12-00203 . - ISSN 1997-1397. - ISSN 2313-6022
   Перевод заглавия: Эффект Тальбота при селективном отражении от рамановски индуцированной решетки
Кл.слова (ненормированные):
Raman gain -- Fresnel diffraction -- Talbot effect -- selective reflection -- рамановское усиление -- дифракция Френеля -- эффект Тальбота -- селективное отражение
Аннотация: In the present work, we study the Talbot effect under selective reflection of probe radiation at the interface between a dielectric and a layer of resonant atoms, in which a Raman grating is induced. Under such conditions, the interface can operate as a reflective diffraction grating. The cases of one- and two-dimensional gratings are considered. It is shown that the reflection coefficient, with the account of the selectively reflected wave, can be both greater or smaller than the usual Fresnel reflection coefficient. The Talbot effect can be observed for a selectively reflected wave in the near-field diffraction region. The spatial structure of the diffraction patterns essentially depends on the pump field intensity and the Raman detuning.
В работе исследуется эффект Тальбота при селективном отражении пробного излучения на границе раздела диэлектрик — слой резонансных атомов, в котором индуцируется рамановская решетка. В таких условиях интерфейс может выступать как отражательная дифракционная решетка. Рассмотрены случаи одномерных и двумерных решеток. Показано, что коэффициент отражения с учетом селективно отраженной волны может быть как больше, так и меньше обычного коэффициента отражения Френеля. Эффект Тальбота можно наблюдать для селективно отраженной волны в ближней дифракционной области. Пространственная структура дифракционных картин существенно зависит от напряженности поля накачки и рамановской отстройки.

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Держатели документа:
Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович; Архипкин, Василий Григорьевич

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Super-bound states in the continuum through merging in grating / E. Bulgakov, G. Shadrina, A. Sadreev, K. Pichugin // Phys. Rev. B. - 2023. - Vol. 108, Is. 12. - Ст. 125303, DOI 10.1103/PhysRevB.108.125303. - Cited References: 70. - We thankful Yi Xu and Zhanyuan Zhang for numerous fruitful discussions. The work was supported by Russian Science Foundation Grant No. 22-12-00070 . - ISSN 2469-9950. - ISSN 2469-9969
Аннотация: We consider bound states in the continuum (BICs) in grating composed of infinitely long silicon rods of rectangular cross-section. We reveal merging off-Γ Friedrich-Wintgen BIC with symmetry protected BIC. We present CMT and multipole decomposition theory, complementing each other, to analyze the merging phenomenon. The theories show a crossover of the behavior of Q factor from standard inverse square law k-2x,z towards extremely fast boosting law k-6x,z in momentum space. In turn that crossover gives rise to another crossover from Q ~ N2 to Q ~ N3 for symmetry protected quasi-BIC in finite grating of N rods owing to suppression of radiation leakage of quasi-BIC mode from surface of grating. As a result, the Q factor of quasi-BIC is determined by residual leakage from ends of grating. We show numerically that this leakage can also be suppressed considerably if grating is stretched from the ends.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk Russia
Russia Institute of Computational Modelling SB RAS, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Bulgakov, E. N.; Булгаков, Евгений Николаевич; Shadrina, Galina; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Pichugin, K. N.; Пичугин, Константин Николаевич
}
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Bulgakov, E. N.
Precise size sorting of nanoparticles by bound states in the continuum in a dual finite grating / E. Bulgakov, A. Sadreev // Opt. Lett. - 2023. - Vol. 48, Is. 17. - P. 4705-4708, DOI 10.1364/OL.496198. - Cited References: 37. - We acknowledge discussions with K.N. Pichugin. - The work was supported by Russian Science Foundation; grant no. 22-12-00070 . - ISSN 0146-9592. - ISSN 1539-4794
Кл.слова (ненормированные):
Fano resonance -- Laser beams -- Optical force -- Optical lattices -- Refractive index -- Resonant modes
Аннотация: We consider two parallel dielectric gratings (dual grating) which support accidental bound states in the continuum (BICs) mostly localized between gratings. As distinctive to true periodical BICs in an infinite dual grating, the enveloping intensity of quasi-BICs in a finite dual grating behaves as a standing wave. That behavior is a key property to trap nanoparticles into selected cells of the dual grating sorted by sizes of nanoparticles dragged by liquid flowing between gratings. For excitation of quasi-BIC with high quality factor by an electromagnetic plane wave with normal incidence and power 1 mW/µm2 we show high efficiency of sorting of nanoparticles by sizes.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
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Unveiling Talbot effect under Fresnel diffraction at a fork-shaped grating / D. A. Ikonnikov, S. A. Myslivets, N. N. Davletshin [et al.] // Ann. Phys. (Berlin). - 2023. - Vol. 535, Is. 3. - Ст. 2200480, DOI 10.1002/andp.202200480. - Cited References: 31. - The work was supported by the Russian Science Foundation (Grant No. 19-12-00203) . - ISSN 0003-3804. - ISSN 1521-3889
Кл.слова (ненормированные):
fork-shaped gratings -- optical vortices -- Talbot effect -- topological charge
Аннотация: The near-field effect of diffraction image self-reproduction or self-imaging of a periodic grating illuminated by quasi-monochromatic wave is well-known as the Talbot effect. Introducing a dislocation to a periodic structure provides a fork-shaped modulation of the phase/amplitude, which produces discrete diffraction pattern in a far-field consisting of optical vortices. In this paper, Fresnel diffraction at amplitude fork-shaped grating is theoretically and experimentally studied. The coexistence of spatial ordering and local violation of translational symmetry of the structure manifests itself in a strict diffraction pattern consisting of optical vortices in the far-field, which is shown to be accompanied by formation of a spatially ordered intensity distribution in the near-field, reminiscent the Talbot carpets for periodic structures. These results demonstrate the first evidence of Talbot effect occurred under light diffraction at fork-shaped gratings, being promising for deep understanding of near-field singular optics phenomena.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Ikonnikov, D. A.; Иконников, Денис Андреевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Davletshin, N. N.; Давлетшин, Николай Николаевич; Baron, F. A.; Барон, Филипп Алексеевич; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович
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Near-field evolution of optical vortices and their spatial ordering behind a fork-shaped grating / D. A. Ikonnikov, S. A. Myslivets, V. G. Arkhipkin, A. M. Vyunishev // Photonics. - 2023. - Vol. 10, Is. 4. - Ст. 469, DOI 10.3390/photonics10040469. - Cited References: 32. - The work is supported by the Russian Science Foundation (grant No. 19-12-00203) . - ISSN 2304-6732
Кл.слова (ненормированные):
fork-shaped grating -- optical vortex -- optical singularity -- near-field diffraction
Аннотация: Fork-shaped gratings are periodic structures containing a spatial dislocation known to be used for the production of optical vortices in a far field. Spatial overlapping of diffraction orders in a near field results in complex spatial evolution of optical vortices. In this paper, we report the results of near-field diffraction on fork-shaped gratings with different topological charges and analyze the evolution of specific optical vortices during propagation. Optical vortices have been shown to form two-dimensional well-ordered spatial configurations in specific transverse planes. The locus of points of optical singularities has been shown to form two helical lines twisted around the ±1 diffraction order directions. Our results demonstrate that the spatial behaviour of optical vortices is in close connection with the spatial ordering arising from the Talbot effect. The quantity of optical vortices demonstrates complex spatial dynamics, which includes spatial oscillations and decreasing along the propagation direction. These results provide a foundation towards a deeper understanding of near-field singular optics phenomena.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
Department of Photonics and Laser Technology, Siberian Federal University, 660079 Krasnoyarsk, Russia

Доп.точки доступа:
Ikonnikov, Denis A.; Иконников, Денис Андреевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович
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10.

Arkhipkin, V. G.
Control of light-pulse propagation in electromagnetically induced grating using additional driving field / V. G. Arkhipkin, S. A. Myslivets, P. S. Pankin // Mod. problems of laser phys. : матер. симп. - Новосибирск : ЗАО ИПП "Офсет", 2016. - P. 258

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Материалы симпозиума

Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович; Pankin, P. S.; Панкин, Павел Сергеевич; Архипкин, Василий Григорьевич; International symposium and school for young scientist "Modern problems of laser physics"(7 ; )(2016 ; 22.08 - 28.08 ; Novosibirsk); Международный симпозиум и школа для молодых ученых "Современные проблемы лазерной физики"(7 ; )(2016 ; 22.08 - 28.08 ; Новосибирск); Институт лазерной физики Сибирского отделения РАН; Новосибирский государственный университет; Институт спектроскопии РАНМосковский государственный университет им. М.В. Ломоносова; Всероссийский научно-исследовательский институт физико-технических и радиотехнических измерений
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