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Pichugin, K. N.
A series of avoided crossings of resonances in the system of several different dielectric resonators results in giant Q-factors / K. Pichugin, A. Sadreev, E. Bulgakov // Photonics. - 2023. - Vol. 10, Is. 9. - Ст. 973, DOI 10.3390/photonics10090973. - Cited References: 64. - This work is supported by the Russian Science Foundation under grant 22-12-00070 . - ISSN 2304-6732
Кл.слова (ненормированные):
resonant modes -- avoided crossing -- high Q-factor
Аннотация: On an example of a system of three/four/five/six different coupled coaxial silicon disks, we realize a series of avoided crossings of resonances (ACRs) with respect to the different morphologies for the different scales of each disk. Each next step of ACR accompanied by the optimization processes of all previous ACRs contributes almost one order of magnitude to the Q-factor. As a result, we achieve unprecedented values for the Q-factors: 6.6·104 for three, 4.8·106 for four, 8.5·107 for five and several billions for six free standing silicon disks. Comparisons to such prominent methods as whispering gallery modes or quasi bound states in the continuum to boost the Q-factor demonstrate the tremendous advantage of the present approach not only in terms of Q-factor values but also in terms of mode volumes. Multipole analysis of the final hybridized resonant mode explains such extremely large Q-factor values. The analysis shows a strong redistribution of radiation owing to the almost-exact destructive interference of the dominating complex multipole radiation amplitudes.

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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; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Пичугин, Константин Николаевич
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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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Size-selective optical trapping of nanoparticles with bound states in the continuum / A. S. Kostyukov, V. S. Gerasimov, A. E. Ershov [et al.] // Opt. Lasers Eng. - 2023. - Vol. 171. - Ст. 107797, DOI 10.1016/j.optlaseng.2023.107797. - Cited References: 46. - The work was supported by Russian Science Foundation Grant No. 22-12-00070 . - ISSN 0143-8166. - ISSN 1873-0302
Кл.слова (ненормированные):
Nanoparticles -- Bound states in the continuum -- Optical tweezers -- Optical trapping
Аннотация: We consider a waveguide with a symmetrically integrated silicon cylinder. This design supports a symmetry protected bound state in the continuum (BIC) with Q-factor controlled by slight displacement of the cylinder. When excited by a TE10 electromagnetic wave, the BIC leads to giant optical forces near the cylinder. These forces have a strong impact on nanoparticles being dragged by liquid flow over the waveguide as they approach the cylinder. At the same time, the nanoparticles perturb the resonant frequency of the BIC with a value proportional to their volume and proximity to the cylinder. Therefore, the interplay between the resonant width of the BIC and the nanoparticle frequency perturbation determines the positions of the nanoparticles trapped around the cylinder. This paradigm demonstrates resonant self-trapping and sorting of nanoparticles by size through BIC excitation. We highlight the extreme sensitivity of these effects to the frequency of the injected TE wave. Additionally, we show that these results remain valid when considering the finite conductivity of metal waveguides.

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Держатели документа:
International Research Center of Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Computational Modelling, SB RAS, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Kostyukov, A. S.; Gerasimov, V. S.; Ershov, A. E.; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович
}
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Bulgakov, E. N.
Optical coupled-mode theory for dielectric solids of revolution / E. N. Bulgakov, D. N. Maksimov, A. E. Ershov // Phys. Rev. A. - 2023. - Vol. 107, Is. 4. - Ст. 043506, DOI 10.1103/PhysRevA.107.043506. - Cited References: 33. - This work received financial support through Russian Science Foundation Grant No. 22-72-00102 . - ISSN 2469-9926. - ISSN 2469-9934
Аннотация: We propose a single resonance coupled-mode approach to light scattering by dielectric solids of revolution. By using a biorthogonal decomposition of the S matrix found with the extended boundary condition method we derived all parameters required for application of the temporal coupled-mode theory in a closed form. The proposed approach allows for constructing a frequency-dependent Fano response due to a single resonance after the full-wave solution has been found at a single incident frequency.

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Держатели документа:
Institute of Computational Modeling SB RAS, Krasnoyarsk 660036, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
IRC SQC, Siberian Federal University, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Maksimov, D. N.; Максимов, Дмитрий Николаевич; Ershov, A. E.; Булгаков, Евгений Николаевич
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Super quasibound state in the continuum / Zh. Zhang, E. Bulgakov, K. Pichugin [et al.] // Phys. Rev. Appl. - 2023. - Vol. 20, Is. 1. - Ст. L011003, DOI 10.1103/PhysRevApplied.20.L011003. - Cited References: 60. - Zhanyuan Zhang and Yi Xu would like to thank the suggestions from Dr Meng Kang and Professor Chengbo Mou. This work is supported by National Natural Science Foundation of China (62222505), Russian Science Foundation with Grant No. 22-12-00070 and the Guangdong Introducing Innovative, Entrepreneurial Teams of “The Pearl River Talent Recruitment Program” (2019ZT08X340). K. Pichugin,E. Bulgakov and A. Sadreev acknowledge the state assignment of Kirensky Institute of Physics . - ISSN 2331-7019
Аннотация: Avoided crossing of resonances and merging multiple bound states in the continuum (BICs) are parallel means for tailoring the physical properties of BICs. Herein, we introduce a concept of super quasi-BIC for photonic crystal (PhC) systems where its quality (Q) factor is boosted in both parametric and momentum spaces. A super quasi-BIC with substantial enhancement of Q factor can be achieved in a finite PhC by combining avoided crossing of two symmetry-protected (SP) quasi-BICs in parametric space and merging BICs in momentum space simultaneously. Of note, analytical theory shows that the proposed mechanism results in the transition of asymptotic behavior of the Q factor over the numbers of resonators from N2 to exclusive N3 for SP BICs, which is highly significant for realizing quasi-BICs in a compact PhC. Microwave experiments are performed to validate the theoretical results. Our results provide a paradigm shift for manipulating the physical properties quasi-BICs in finite PhC structures, which can also be generalized to the two-dimensional PhC slab case. It would facilitate various applications, including but not limited to low-threshold lasing and high figure-of-merit sensing, etc.

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Держатели документа:
Guangdong Provincial Key Laboratory of Information Photonics Technology, Institute of Advanced Photonic Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou, China
Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519000, China

Доп.точки доступа:
Zhang, Zhanyuan; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Xu, Yi; Qin, Yuwen
}
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Exceptional points in periodic array of silicon rods / G. Shadrina, E. Bulgakov, A. Sadreev, K. Pichugin // Appl. Phys. Lett. - 2023. - Vol. 123, Is. 21. - Ст. 211104, DOI 10.1063/5.0173550. - Cited References: 37 . - ISSN 0003-6951. - ISSN 1077-3118
Аннотация: We find numerically the complex eigenvalues in grating composed of infinitely long silicon rods of rectangular cross section and show existence of exceptional points (EPs) in parametric space of structural scales and wave vector along the rods. The EPs have sufficiently small imaginary parts due to their proximity to bound states in the continuum. This enables to trace the resonant frequencies in the transmission around the EP and, accordingly, to identify the EP by bifurcation of the transmission. We present generic coupled mode theory to elucidate this effect. We also show that structural fluctuations of grating preserve EP but obscures their observation because of inhomogeneous broadening of transmission peaks.

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

Доп.точки доступа:
Shadrina, Galina; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Pichugin, K. N.; Пичугин, Константин Николаевич
}
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Шадрина, Галина Владимировна.
Супер-связанные состояния в континууме в фотонном кристалле за счет слияния резонансов / Г. В. Шадрина, Е. Н. Булгаков, А. Ф. Садреев // XXXIV Всероссийская школа-семинар "Волновые явления: физика и применения" имени профессора А.П. Сухорукова (Волны-2023) : сборник трудов. - 2023. - Секция: Нанофотоника, метаматериалы и фотонные кристаллы. - С. 2-3. - Библиогр.: 3. - РНФ № 22-12-00070

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Держатели документа:
Институт физики им. Л.В. Киренского ФИЦ КНЦ СО РАН
Институт вычислительного моделирования СО РАН

Доп.точки доступа:
Булгаков, Евгений Николаевич; Bulgakov, E. N.; Садреев, Алмаз Фаттахович; Sadreev, A. F.; Московский государственный университет им. М.В. Ломоносова; Волны-2023, Всероссийская школа-семинар "Волновые явления: физика и применения" имени А. П. Сухорукова(34 ; 2023 ; 28 мая - 2 июня ; Можайск, Моск. обл.); "Волновые явления: физика и применения"", Всероссийская школа-семинар имени А. П. Сухорукова(34 ; 2023 ; 28 мая - 2 июня ; Можайск, Моск. обл.)
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Bulgakov, E. N.
Bound states in the continuum in dielectric resonators embedded into metallic waveguide / E. N. Bulgakov, A. S. Pilipchuk, A. F. Sadreev // All-dielectric nanophotonics / ed.: A. S. Shalin [et al.] : Elsevier, 2023. - Chapt. 7. - P. 185-212. - (Nanophotonics series). - Cited References: 97. - РНФ № 22-12-00070

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

Доп.точки доступа:
Shalin, A. S. \ed.\; Valero, Adrià Canós \ed.\; Miroshnichenko, A. \ed.\; Pilipchuk, A. S.; Пилипчук, Артем Сергеевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений 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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10.

Thermo-optic hysteresis induced by a high-quality defect mode in a two-dimensional photonic crystal / G. V. Shadrina, E. N. Bulgakov, D. N. Maksimov, V. S. Gerasimov // Phys. Rev. B. - 2023. - Vol. 108, Is. 15. - Ст. 155411, DOI 10.1103/PhysRevB.108.155411. - Cited References: 42. - This work received financial support through a grant of the Russian Science Foundation and Krasnoyarsk Regional Fund of Science No. 22-22-20056 . - ISSN 2469-9950. - ISSN 2469-9969
Аннотация: We consider thermo-optic bistability induced by a high-quality defect mode in the square array of dielectric rods. It is demonstrated that the scattering problem with an account of the variation of the dielectric constant by heating can be solved with the T-matrix method by introducing an explicit dependence of the permittivity of the defect rod on temperature. We found that the bistability occurs at low intensities of the incident wave ≈ 0.01mW/µm2 in a square array of 7 ˣ 7 silicon rods with a defect rod in the middle.

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Держатели документа:
Institute of Computational Modelling SB RAS, Krasnoyarsk 660036, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
IRC SQC, Siberian Federal University, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Shadrina, G. V.; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Gerasimov, V. S.
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11.

Пилипчук, Артем Сергеевич.
Настольная лаборатория связанных состояний в континууме металлического волновода с диэлектрическими вставками / А. С. Пилипчук, Е. Н. Булгаков, А. Ф. Садреев // Енисейская фотоника-2022 : тезисы докладов : в 2-х т. / Сиб. федер. ун-т [и др.]. - Красноярск, 2022. - Т. 2, Секция 3 : Фотонные кристаллы, метаматериалы и топологические фазы. - С. 23-24. - Библиогр.: 6 . - ISBN 978-5-6045250-1-2

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Архипкин, Василий Григорьевич \чл. прогр. ком.\; Arkhipkin, V. G.; Втюрин, Александр Николаевич \чл. прогр. ком., зам. предс. орг. ком.\; Vtyurin, A. N.; Вьюнышев, Андрей Михайлович \чл. прогр. ком., чл. орг. ком.\; Vyunishev, A. M.; Зырянов, Виктор Яковлевич \чл. прогр. ком.\; Zyryanov, V. Ya.; Карпов, Сергей Васильевич \чл. прогр. ком.\; Karpov, S. V.; Садреев, Алмаз Фаттахович \чл. прогр. ком.\; Sadreev, A. F.; Тимофеев, Иван Владимирович \чл. орг. ком., чл. прогр. ком.\; Timofeev, I. V.; Панкин, Павел Сергеевич \чл. орг. ком.\; Pankin, P. S.; Пятнов, Максим Владимирович \чл. орг. ком.\; Pyatnov, M. V.; Булгаков, Евгений Николаевич; Bulgakov, E. N.; Садреев, Алмаз Фаттахович; Pilipchuk, A. C.; Сибирский федеральный университет; Российская академия наук; Сибирское отделение РАН; Федеральный исследовательский центр "Красноярский научный центр Сибирского отделения Российской академии наук"; Институт физики им. Л.В. Киренского Сибирского отделения РАН; Всероссийская научная конференция с международным участием "Енисейская фотоника-2022"(2 ; 2022 ; 19-24 сент. ; Красноярск); "Енисейская фотоника", Всероссийская научная конференция с международным участием(2 ; 2022 ; 19-24 сент. ; Красноярск)
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12.

Bulgakov, E. N.
Desktop laboratory of bound states in the continuum in metallic waveguide with dielectric cavities / E. Bulgakov, A. Pilipchuk, A. Sadreev // Phys. Rev. B. - 2022. - Vol. 106, Is. 7. - Ст. 075304, DOI 10.1103/PhysRevB.106.075304. - Cited References: 64. - We are grateful to Lujun Huang, Andrey Miroshnichenko and Yi Xu for presentation of unpublished paper and discussions. The research was supported by Russian Science Foundation No. 22-12-00070 . - ISSN 2469-9950
Кл.слова (ненормированные):
Q factor measurement -- Topology -- Asymptotics -- Bound-states -- Dielectric cavities -- Infinite arrays -- Metallic waveguide -- Metallics -- Position and orientations -- Power -- Q-factors -- Maxwell equations
Аннотация: We consider dielectric cavities whose radiation space is restricted by two parallel metallic planes. The TM solutions of the Maxwell equations of the system are equivalent to the solutions of periodical arrays of dielectric cavities. The system readily allows to achieve bound states in the continuum (BICs) of any type including topological BICs as dependent on position and orientation of the cavities relative to the planes and that extremely facilitates experimental studies in comparison to infinite arrays of the cavities. We show the effect of merging of topologically protected BICs that pushes the square asymptotic of the Q factor into the power degree 4 or even 6.

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

Доп.точки доступа:
Pilipchuk, A. S.; Пилипчук, Артем Сергеевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
}
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13.

Ring of bound states in the continuum in the reciprocal space of a monolayer of high-contrast dielectric spheres / A. S. Kostyukov, V. S. Gerasimov, A. E. Ershov, E. N. Bulgakov // Phys. Rev. B. - 2022. - Vol. 105, Is. 7. - Ст. 075404, DOI 10.1103/PhysRevB.105.075404. - Cited References: 43. - This research was supported by RFBR, Krasnoyarsk Territory, and Krasnoyarsk Regional Fund of Science, Project No. 20-42-240003, by the Ministry of Science and Higher Education of the Russian Federation, Project No. FSRZ-20200008 . - ISSN 2469-9950. - ISSN 2469-9969

РУБ Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
PHOTONIC BAND-STRUCTURE
FANO RESONANCES
SCATTERING
Аннотация: We consider light scattering by two-dimensional arrays of high-index dielectric spheres arranged into a triangular and square lattices. We demonstrate the appearance of the double degenerate accidental super-BIC modes with extremely suppressed radiative losses in the vicinity of the Γ point of the leaky band of the triangular lattice. Two rings of BICs (circular lines of BICs in reciprocal space) with different polarization appear at the point of the super-BIC destruction. The radius of the ring BIC (RBIC) changes as a function of the sphere's radius. We propose a generic analytical expression to describe the behavior of the guided mode decay rate as a function of the sphere radii and the wave vector in the vicinity of the RBIC. The results are explained using a multipolar approach.

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Держатели документа:
Siberian Fed Univ, Int Res Ctr Spect & Quantum Chem, Krasnoyarsk 660041, Russia.
Inst Computat Modelling SB RAS, Krasnoyarsk 660036, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Kostyukov, A. S.; Gerasimov, V. S.; Ershov, A. E.; Bulgakov, E. N.; Булгаков, Евгений Николаевич; RFBR Russian Foundation for Basic Research (RFBR); Krasnoyarsk Territory; Krasnoyarsk Regional Fund of Science [20-42-240003]; Ministry of Science and Higher Education of the Russian Federation [FSRZ-20200008]
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14.

Degenerate bound states in the continuum in square and triangular open acoustic resonators / A. Sadreev, E. Bulgakov, A. Pilipchuk [et al.] // Phys. Rev. B. - 2022. - Vol. 106, Is. 8. - Ст. 085404, DOI 10.1103/PhysRevB.106.085404. - Cited References: 43 . - ISSN 2469-9950
Кл.слова (ненормированные):
Q factor measurement -- Bound-states -- Eigenstates -- Flow byes -- High Q factor -- Output flow -- Property -- Small perturbations -- Square resonators -- Triangular resonators -- Acoustic resonators
Аннотация: We consider square and equilateral triangular open acoustic resonators with the C4v and C3v symmetries, respectively. There is a unique property of square and triangular resonators of accidental number fourfold degeneracy of eigenstates that gives rise to twofold-degenerate Friedrich-Wintgen (FW) bound states in the continuum (BICs). Compared to usual FW BICs, the degenerate FW BICs maintain high Q factor in wide range of the size of resonators. That removes the fabrication difficulties of the proper choice of resonator. The presence of degenerate BICs in triangular resonators is extremely sensitive to switch output flows by small perturbations with 100% efficiency.

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Держатели документа:
Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
School of Engineering and Information Technology, University of New South Wales Canberra, Northcott Drive, AC2600, Australia

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Pilipchuk, A. S.; Пилипчук, Артем Сергеевич; Miroshnichenko, A.; Huang, L.
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15.

Bulgakov, E. N.
Self-trapping of nanoparticles by bound states in the continuum / E. N. Bulgakov, A. F. Sadreev // Phys. Rev. B. - 2022. - Vol. 106, Is. 16. - Ст. 165430, DOI 10.1103/PhysRevB.106.165430. - Cited References: 46. - The work was supported by Russian Science Foundation Grant No. 22-12-00070 . - ISSN 2469-9950
Кл.слова (ненормированные):
Basic principles -- Bound-states -- Dielectric cylinder -- Dielectric particles -- Equilibrium positions -- Fabry-Perot resonators -- High-Q resonances -- Quasibound state -- Self-trapping -- Submicron -- Nanoparticles
Аннотация: In the first tutorial part of the paper, we show that equilibrium positions of small dielectric particles inside the Fabry-Perot resonator (FPR) are sensitive to a frequency of incident electromagnetic wave and size of particle. That elucidates basic principles of resonant trapping of nanoparticles by excitation of high-Q resonances of FPR. In the second part, we consider a long dielectric cylinder with submicron radius (primary cylinder) integrated into a metallic waveguide which supports symmetry-protected bound states in the continuum (BICs). We consider the case of a slightly shifted cylinder relative to the axis of symmetry of a waveguide that controls the Q factor of quasi-BIC. Then, the extra nanoparticle perturbs quasi-BIC as dependent on the size of the nanoparticle and position relative to the primary cylinder. An interplay between the resonant width of quasi-BIC and a degree of frequency perturbation defines whether a dragging nanoparticle is terminated at a surface of the primary cylinder for an ultrasmall size of nanoparticles or at the definite distances from the cylinder for the larger size of nanoparticles. Thereby, we demonstrate a paradigm of resonant self-trapping and sorting of nanoparticles by use of quasi-BICs. We also show extremal sensitivity of self-trapping to the frequency of an electromagnetic (EM) wave propagating over waveguide.

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

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
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16.

Shadrina, G. V.
Optical bistability and symmetry breaking at resonance scattering of light by a finite photonic crystal with a nonlinear resonant cavity / G. V. Shadrina, E. N. Bulgakov // J. Exp. Theor. Phys. - 2022. - Vol. 135, Is. 5. - P. 632-641, DOI 10.1134/S1063776122110176. - Cited References: 50. - This study was supported by the Russian Science Foundation, grant no. 22-12-00070 . - ISSN 1063-7761. - ISSN 1090-6509
Аннотация: Optical bistability and symmetry breaking under the conditions of plane wave incidence on a system of coupled photonic crystal microcavities containing an inclusion with Kerr susceptibility have been studied. The T-matrix modal method has been generalized for the case of nonlinear microcavities supporting one monopole mode. It has been shown that both phenomena considerably depend not only on external field strength but also on angle of incidence and photonic crystal size.

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Публикация на русском языке Шадрина, Галина Владимировна. Оптическая бистабильность и нарушение симметрии при резонансном рассеянии света на конечном фотонном кристалле с нелинейной резонансной полостью [Текст] / Г. В. Шадрина, Е. Н. Булгаков // Журн. эксперим. и теор. физ. - 2022. - Т. 162 Вып. 5. - С. 646-656

Держатели документа:
Institute of Computational Modeling, Federal Research Center “Krasnoyarsk Science Center”, Siberian Branch, Russian Academy of Sciences, 660036, Akademgorodok, Krasnoyarsk, Russia
Kirenskii Institute of Physics, Federal Research Center “Krasnoyarsk Science Center”, Siberian Branch, Russian Academy of Sciences, 660036, Akademgorodok, Krasnoyarsk, Russia

Доп.точки доступа:
Bulgakov, E. N.; Булгаков, Евгений Николаевич; Шадрина, Галина Владимировна
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17.

Thermo-optic hysteresis with bound states in the continuum / D. N. Maksimov, A. S. Kostyukov, A. E. Ershov [et al.] // Phys. Rev. A. - 2022. - Vol. 106, Is. 6. - Ст. 063507, DOI 10.1103/PhysRevA.106.063507. - Cited References: 52. - This work received financial support through the Russian Science Foundation and Krasnoyarsk Regional Fund of Science under Grant No. 22-22-20056 [52]. The authors acknowledge discussions with A. A. Bogdanov . - ISSN 2469-9926. - ISSN 2469-9934
Аннотация: We consider thermo-optic hysteresis in a silicon structure supporting bound states in the continuum. Taking into account radiative heat transfer as a major cooling mechanism we constructed a nonlinear model describing the optical response. It is shown that the thermo-optic hysteresis can be obtained with low intensities of incident light I0 ≈ 1 W/m2 at the red edge of the visible under the critical coupling condition.

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Держатели документа:
IRC SQC, Siberian Federal University, 660041 Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
Institute of Computational Modelling SB RAS, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Maksimov, D. N.; Максимов, Дмитрий Николаевич; Kostyukov, A. S.; Ershov, A. E.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Gerasimov, V. S.
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18.

General framework of bound states in the continuum in an open acoustic resonator / L. Huang, B. Jia, A. S. Pilipchuk [et al.] // Phys. Rev. Appl. - 2022. - Vol. 18, Is. 5. - Ст. 054021, DOI 10.1103/PhysRevApplied.18.054021. - Cited References: 47. - L.H. and A.E.M. are supported by the Australian Research Council Discovery Project (Grant No. DP200101353) and the UNSW Scientia Fellowship program. Y.K.C. and D.A.P. are supported by the Australian Research Council Discovery Project (Grant No. DP200101708). B.J., S.H., and Y.L. are supported by the National Natural Science Foundation of China (Grant No. 12074286) and the Shanghai Science and Technology Committee (Grant No. 21JC1405600). A.P., E.B., and A.S. are supported by the Russian Science Foundation (Grant No. 22-12-00070) . - ISSN 2331-7019
Кл.слова (ненормированные):
Acoustic resonators -- Acoustic waveguides -- Bound-states -- Coupled waveguide resonators -- Degenerate modes -- Eigen modes -- General method -- High-Q resonances -- Momentum spaces -- Non-Hermitian Hamiltonians -- Waveguide-resonators -- Waveguide filters
Аннотация: Bound states in the continuum (BICs) provide a viable way of achieving high-Q resonances in both photonics and acoustics. In this work, we propose a general method of constructing Friedrich-Wintgen (FW) BICs and accidental BICs in a coupled acoustic waveguide-resonator system. We demonstrate that FW BICs can be achieved with arbitrary two degenerate resonances in a closed resonator, regardless of whether they have the same or opposite parity. Moreover, their eigenmode profiles can be arbitrarily engineered by adjusting the position of the attached waveguide. This suggests an effective way of continuously switching the nature of the BICs from FW BICs to symmetry-protected BICs or accidental BICs. Also, such BICs are sustained in the coupled waveguide-resonator system with shapes such as rectangles, ellipses, and rhomboids. These interesting phenomena are well explained by the two-level effective non-Hermitian Hamiltonian, where two strongly coupled degenerate modes play a major role in forming such FW BICs. Additionally, we find that such an open system also supports accidental BICs in geometry space instead of momentum space via tuning the position of the attached waveguide, which is attributed to the quenched coupling between the waveguide and eigenmodes of the closed cavity. Finally, we fabricate a series of three-dimensional coupled resonator waveguides and experimentally verify the existence of FW BICs and accidental BICs by measuring the transmission spectra. Our results complement the current BIC library in acoustics and provide nice routes for designing acoustic devices, such as acoustic absorbers, filters, and sensors.

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Держатели документа:
School of Engineering and Information Technology, University of New South Wales, Northcott Drive, Canberra, ACT 2600, Australia
Institute of Acoustics, Tongji University, Shanghai, 200092, China
L. V. Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch, RAN, Krasnoyarsk, 660036, Russian Federation
Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, United States
Department of Mechanical Engineering, Rowan University, Glassboro, NJ 08028, United States

Доп.точки доступа:
Huang, L.; Jia, B.; Pilipchuk, A. S.; Пилипчук, Артем Сергеевич; Chiang, Y.; Huang, S.; Li, J.; Shen, C.; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Deng, F.; Powell, D. A.; Cummer, S. A.; Li, Y.; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Miroshnichenko, A. E.
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19.

Шадрина, Галина Владимировна.
Оптическая бистабильность и нарушение симметрии при резонансном рассеянии света на конечном фотонном кристалле с нелинейной резонансной полостью / Г. В. Шадрина, Е. Н. Булгаков // Журн. эксперим. и теор. физ. - 2022. - Т. 162, Вып. 5. - С. 646-656, DOI 10.31857/S0044451022110049. - Библиогр.: 50. - Работа выполнена при поддержке Российского научного фонда (грант № 22-12-00070) . - ISSN 0044-4510
Аннотация: Исследовалась оптическая бистабильность и явление нарушения симметрии в системе связанных фотонно-кристаллических микрорезонаторов с включением из материала с керровской восприимчивостью при падении плоской волны. Для этой цели предложено обобщение модального метода Т-матрицы на случай нелинейных микрорезонаторов, поддерживающих одну монопольную моду. Показано, что оба явления существенно зависят не только от интенсивности внешнего поля, но и от угла падения и размера фотонного кристалла. Обнаружены и исследованы различные режимы возбуждения.

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РИНЦ

Переводная версия Shadrina G. V. Optical bistability and symmetry breaking at resonance scattering of light by a finite photonic crystal with a nonlinear resonant cavity [Текст] / G. V. Shadrina, E. N. Bulgakov // J. Exp. Theor. Phys. - 2022. - Vol. 135 Is. 5.- P.632-641

Держатели документа:
Институт вычислительного моделирования, ФИЦ КНЦ Сибирского отделения Россияской академии наук, 660036, Красноярск, Россия
Институт физики им. Л. В. Киренского, ФИЦ КНЦ Сибирского отделения Россияской академии наук, 660036, Красноярск, Россия

Доп.точки доступа:
Булгаков, Евгений Николаевич; Bulgakov, E. N.; Shadrina, G. V.
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20.

Bulgakov, E. N.
Resonant binding of dielectric particles to a metal surface without plasmonics / E. Bulgakov, K. Pichugin, A. Sadreev // Phys. Rev. A. - 2021. - Vol. 103, Is. 5. - Ст. L051501, DOI 10.1103/PhysRevA.103.L051501. - Cited References: 36. - The work was supported by Russian Foundation for Basic Research Project No. 19-02-00055 . - ISSN 2469-9926. - ISSN 2469-9934

РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
RADIATION PRESSURE
   OPTICAL BINDING
   FORCES
   MANIPULATION
Аннотация: A high index dielectric spherical particle supports the high-Q resonant Mie modes that result in a regular series of sharp resonances in the radiation pressure. The presence of a perfectly conducting metal surface transforms the Mie modes into extremely high-Q magnetic bonding or electric antibonding modes for the close approach of a sphere to a surface. We show that an electromagnetic plane wave with normal incidence results in repulsive or attractive resonant optical forces relative to a metal for the excitation of electric bonding or magnetic antibonding resonant modes, respectively. A magnitude of resonant optical forces reaches the order of 1 nN of magnitude for micron-sized silicon particles and a power of light 1mW/μm2 that exceeds the gravitational force by four orders. However, what is the most remarkable is there are steady positions for a sphere between the pulling and pushing forces that give rise to the resonant binding of the sphere to a metal surface.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич; Russian Foundation for Basic Research ProjectRussian Foundation for Basic Research (RFBR) [19-02-00055]
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