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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Sadreev A. F.
Заглавие : Bound states in the continuum with high orbital angular momentum in a dielectric rod with periodically modulated permittivity
Коллективы : Ministry of Education and Science of Russian Federation [N 3.1845.2017]; RFBR [16-02-00314]
Место публикации : Phys. Rev. A: American Physical Society, 2017. - Vol. 96, Is. 1. - Ст.013841. - ISSN 2469-9926, DOI 10.1103/PhysRevA.96.013841. - ISSN 2469-9934(eISSN)
Примечания : Cited References:38. - We acknowledge discussions with D. N. Maksimov and A. S. Aleksandrovsky. This work was partially supported by Ministry of Education and Science of Russian Federation (State Contract No. N 3.1845.2017) and RFBR Grant No. 16-02-00314.
Предметные рубрики: PHOTONIC CRYSTAL SLABS
LIGHT-CONE
RESONANCES
SPHERES
RADIATION
Аннотация: We report bound states in the radiation continuum (BICs) in a single infinitely long dielectric rod with periodically stepwise modulated permittivity alternating from ε1 to ε2. For ε2 = 1 in air the rod is equivalent to a stack of dielectric disks with permittivity ε1. Because of rotational and translational symmetries the BICs are classified by orbital angular momentum m and the Bloch wave vector beta directed along the rod. For m = 0 and β = 0 the symmetry protected BICs have definite polarization and occur in a wide range of the radius of the rod and the dielectric permittivities. More involved BICs with m ≠ 0, β = 0 exist only for a selected radius of the rod at a fixed dielectric constant. The existence of robust Bloch BICs with β ≠ 0, m = 0 is demonstrated. Asymptotic limits to a homogeneous rod and to very thin disks are also considered.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Sadreev A. F.
Заглавие : Fibers based on propagating bound states in the continuum
Коллективы : Ministry of Education and Science of Russian Federation [3.1845.2017]; RFBR [16-02-00314, 17-52-45072]
Место публикации : Phys. Rev. B. - 2018. - Vol. 98, Is. 8. - Ст.085301. - ISSN 2469-9950, DOI 10.1103/PhysRevB.98.085301. - ISSN 2469-9969(eISSN)
Примечания : Cited References: 40. - The authors thank D. N. Maksimov for assistance and discussions. This work was partially supported by the Ministry of Education and Science of Russian Federation (State Contract No. 3.1845.2017) and the RFBR Grants No. 16-02-00314 and No. 17-52-45072.
Предметные рубрики: PHOTONIC CRYSTAL SLABS
LIGHT
RESONANCES
RADIATION
ARRAYS
Аннотация: We show that a circular periodic array of silicon dielectric cylinders supports nearly bound states in the continuum (BICs) propagating along the cylinders. These propagating nearly BICs with extremely large-Q factors are surrounded by resonant modes weakly leaking into the radiation continuum. We present leaky zones in the form of dispersion curves for complex eigenfrequencies dependent on propagation constant kz, with the wave vector directed along the cylinders in the vicinity of different types of BICs. Symmetry-protected nearly BICs have the resonant width proportional to squared propagation constant Γ∼k2z; the widths of non-symmetry-protected nearly BICs behave as Γ∼(kz−kc)2, where kc and non-symmetry-protected nearly BICs have the resonant width proportional to k4z. The latter propagating nearly BICs can serve for the transmission of a electromagnetic signal paving a way to a different type of optical fiber. We also demonstrate weakly leaking resonant modes which carry orbital angular momentum.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Berman G. P., Kolovskii A. R.
Заглавие : Quantum chaos in interactions of multilevel quantum-systems with a coherent radiation-field
Место публикации : Uspekhi Fiz. Nauk. - 1992. - Vol. 162, Is. 4. - P.95-141. - ISSN 0042-1294
Примечания : Cited References: 36
Предметные рубрики: QUASIENERGY FUNCTIONS
RESONANCES
BEHAVIOR
OVERLAP
Аннотация: The paper is short review of the papers devoted to the dynamics of the multilevel quantum systems affected by the external periodic field. The main attention is paid to the phenomenon of the quantum nonlinear resonance and the interaction of the two quantum nonlinear resonances, when the dynamics of the system is chaotic in the classical limit. The paper also contains the analysis of some physical systems where these phenomena take place. 30 figs. 37 refs.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Maksimov D. N.
Заглавие : Light guiding above the light line in arrays of dielectric nanospheres
Место публикации : Opt. Lett.: Optical Society of America, 2016. - Vol. 41, Is. 16. - P.3888-3891. - ISSN 01469592 (ISSN), DOI 10.1364/OL.41.003888
Примечания : Cited References: 46. - Russian Foundation for Basic Research (RFBR) (16-02-00314).
Предметные рубрики: SUBWAVELENGTH WAVE-GUIDES
OPTICAL MODES
NANOPARTICLES
CHAINS
RESONANCES
PARTICLES
SPHERES
Аннотация: We consider light propagation above the light line in arrays of spherical dielectric nanoparticles. It is demonstrated numerically that quasi-bound leaky modes of the array can propagate both stationary waves and light pulses to a distance of 60 wavelengths at the frequencies close to the bound states in the radiation continuum. A semi-analytical estimate for decay rates of the guided waves is found to match the numerical data to a good accuracy. © 2016 Optical Society of America.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Maksimov D. N.
Заглавие : Nonlinear response from optical bound states in the continuum
Коллективы : Ministry of Education and Science of Russian Federation [N 3.1845.2017/4.6]
Место публикации : Sci Rep. - 2019. - Vol. 9. - Ст.7153. - ISSN 2045-2322, DOI 10.1038/s41598-019-43672-y
Примечания : Cited References: 48. - This work was supported by Ministry of Education and Science of Russian Federation (state contract N 3.1845.2017/4.6). We appreciate discussions with Ya Yan Lu, Lijun Yuan, Andrey M. Vyunishev, and Ivan V. Timofeev.
Предметные рубрики: WAVE-GUIDE
WAVELENGTH
RESONANCES
SILICON
LIGHT
Аннотация: We consider nonlinear effects in scattering of light by a periodic structure supporting optical bound states in the continuum. In the spectral vicinity of the bound states the scattered electromagnetic field is resonantly enhanced triggering optical bistability. Using coupled mode approach we derive a nonlinear equation for the amplitude of the resonant mode associated with the bound state. We show that such an equation for the isolated resonance can be easily solved yielding bistable solutions which are in quantitative agreement with the full-wave solutions of Maxwell's equations. The coupled mode approach allowed us to cast the the problem into the form of a driven nonlinear oscillator and analyze the onset of bistability under variation of the incident wave. The results presented drastically simplify the analysis nonlinear Maxwell's equations and, thus, can be instrumental in engineering optical response via bound states in the continuum.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pankin P. S., Wu, B. -R., Yang, J. -H., Chen, K. -P., Timofeev I. V., Sadreev A. F.
Заглавие : One-dimensional photonic bound states in the continuum
Коллективы : Russian Foundation for Basic Research projectRussian Foundation for Basic Research (RFBR) [19-52-52006, 19-02-00055]; Higher Education Sprout Project of the National Chiao Tung University; Ministry of Education; Ministry of Science and Technology (MOST)Ministry of Science and Technology, China [107-2221-E-009-046-MY3, 108-2923-E-009-003-MY3]; RFBRRussian Foundation for Basic Research (RFBR) [19-02-00055]
Место публикации : Commun. Phys. - 2020. - Vol. 3, Is. 1. - Ст.91. - ISSN 2399-3650, DOI 10.1038/s42005-020-0353-z
Примечания : Cited References: 57. - The reported study was funded by Russian Foundation for Basic Research project Nos. 19-52-52006 and 19-02-00055. This project is also supported by the Higher Education Sprout Project of the National Chiao Tung University and Ministry of Education and the Ministry of Science and Technology (MOST No. 107-2221-E-009-046-MY3; No. 108-2923-E-009-003-MY3). S.A.F. thanks RFBR for the research project No. 19-02-00055. The authors are thankful to D.N. Maksimov for valuable discussions and comments.
Предметные рубрики: RESONANCES
VORTEX
Аннотация: Bound states in the continuum have recently found application to sensing, lasing and optoelectronics, but have not been realised in 1D. Here, destructive interference of electron spin in a tilted magnetic field is shown to give rise to bound states in the continuum of a 1D layered photonic crystal. In 1985 Fridriech and Wintgen proposed a mechanism for bound states in the continuum based on full destructive interference of two resonances which can be easily applied to the two- and three-dimensional wave systems. Here we explicitly show that this mechanism can be realized in one-dimensional quantum potential well, owing to destructive interference of electron paths with different spin in tilted magnetic field. Due to one-by-one correspondence between the spin of the electron and the polarization state of light, we have found numerous bound states in the continuum in the one-dimensional photonic system and experimentally confirmed them. The experimental set-up consists of the one-dimensional photonic crystal conjugated with a liquid-crystalline anisotropic defect layer and covered by metal film.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Maksimov D. N.
Заглавие : Avoided crossings and bound states in the continuum in low-contrast dielectric gratings
Коллективы : Ministry of Education and Science of the Russian Federation [3.1845.2017/4.6]
Место публикации : Phys. Rev. A. - 2018. - Vol. 98, Is. 5. - Ст.053840. - ISSN 2469-9926, DOI 10.1103/PhysRevA.98.053840. - ISSN 2469-9934(eISSN)
Примечания : Cited References: 49. - This work was supported by Ministry of Education and Science of the Russian Federation (State Contract No. 3.1845.2017/4.6). We are grateful to K. N. Pichugin for assistance with the computations.
Предметные рубрики: RESONANCES
Аннотация: We consider bound states in the continuum (BICs) in low-contrast dielectric gratings. It is demonstrated that the BICs originate from the reduced guided modes on the effective dielectric slab with the permittivity equal to the average permittivity of the dielectric grating. In the case of isolated resonances, the positions of BICs can be found from two-wave dispersion relationships for guided leaky modes. In the case of the degeneracy between the two families of leaky modes, the system exhibits an avoided crossing of resonances. In the spectral vicinity of the avoided crossing the transmittance as well as the emergence of BICs is described in the framework of the generic formalism by Volya and Zelevinsky [Phys. Rev. C 67, 054322 ( 2003)] with a single fitting parameter.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sadrieva Z. F., Belyakov M. A., Balezin M. A., Kapitanova P. V., Nenasheva E. A., Sadreev A. F., Bogdanov A. A.
Заглавие : Experimental observation of a symmetry-protected bound state in the continuum in a chain of dielectric disks
Коллективы : Russian Science Foundation [17-12-01581]; RFBR [18-32-20205]; Ministry of Education and Science of the Russian Federation [3.1668.2017/4.6]; Foundation for the Advancement of Theoretical Physics and Mathematics "BASIS"
Место публикации : Phys. Rev. A. - 2019. - Vol. 99, Is. 5. - Ст.053804. - ISSN 2469-9926, DOI 10.1103/PhysRevA.99.053804. - ISSN 2469-9934(eISSN)
Примечания : Cited References:61. - The numerical simulations and experimental part of this work were supported by the Russian Science Foundation (Grant No. 17-12-01581), and the analytical calculations were supported by RFBR (Grant No. 18-32-20205) and the Ministry of Education and Science of the Russian Federation (3.1668.2017/4.6). The authors are thankful to Andrey Sayanskiy for assistance in the holder fabrication. A.A.B. and Z.F.S. acknowledge the Foundation for the Advancement of Theoretical Physics and Mathematics "BASIS" for valuable financial support.
Предметные рубрики: LIGHT
RESONANCES
RADIATION
MOMENTUM
BEHAVIOR
LAYER
Аннотация: The existence of bound states in the continuum (BIC) manifests a general wave phenomenon first predicted in quantum mechanics by John von Neumann and Eugene Wigner [J. von Neumann and E. Wigner, Phys. Z. 30, 465 (1929)]. Today it is being actively explored in photonics, radiophysics, acoustics, and hydrodynamics. We report an experimental observation of an electromagnetic bound state in the radiation continuum in a one-dimensional array of dielectric particles. By measurement of the transmission spectra of the ceramic disk chain at GHz frequencies, we demonstrate how a resonant state in the vicinity of the center of the Brillouin zone turns into a symmetry-protected BIC with increase in the number of the disks. We estimate a number of the disks when the radiation losses become negligible in comparison to material absorption and, therefore, the chain could be considered practically as infinite. The presented analysis is supplemented by measurements of the near fields of the symmetry-protected BIC. All measurements are in a good agreement with the results of the numerical simulation and analytical model based on a tight-binding approximation. The obtained results provide useful guidelines for practical implementations of structures with bound states in the continuum that opens up horizons for the development of optical and radio-frequency metadevices.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sadreev A. F., Pilipchuk A. S.
Заглавие : Bound states in the continuum in zigzag quantum wire enforced by a finger gate
Коллективы : Russian Foundation for Basic Research [14-12-00266]
Место публикации : JETP Letters. - 2015. - Vol. 100, Is. 9. - P.585-590. - ISSN 0021, DOI 10.1134/S0021364014210139. - ISSN 10906487(eISSN)
Примечания : Cited References:41. - This work was supported by the Russian Foundation for Basic Research(project no. 14-12-00266).
Предметные рубрики: WAVE-GUIDE
DOUBLE-BEND
SYSTEMS
TRANSMISSION
RESONANCES
ELECTRON
Аннотация: We consider electron transport in a zigzag quantum wire by the effect of finger gate potential. Using a non-Hermitian effective Hamiltonian, we calculate resonance positions and widths to show that the resonance widths are easily governed by the gate potential. In particular, the resonance width can be enforced to be equal to zero, which leads to an electron localization with the Fermi energy embedded in the propagation band of the wire, i.e., the bound state in the continuum (BSC). We show that, for positive values of the potential, a zigzag wire becomes a Fabry-Perot resonator to give rise to BSC too.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rasskazov I. L., Karpov S. V., Panasyuk G. Y., Markel V. A.
Заглавие : Overcoming the adverse effects of substrate on the waveguiding properties of plasmonic nanoparticle chains
Место публикации : J. Appl. Phys.: American Institute of Physics, 2016. - Vol. 119, Is. 4. - Ст.043101. - ISSN 00218979 (ISSN), DOI 10.1063/1.4940415
Примечания : Cited References: 43. - This work has been carried out thanks to the support of the A*MIDEX project (No. ANR-11-IDEX-0001-02) funded by the “Investissements d'Avenir” French Government program, managed by the French National Research Agency (ANR) and was also supported in part by the U.S. National Science Foundation under Grant No. DMS1216970 and by the Ministry of Education and Science of the Russian Federation under Contract No. 1792.
Предметные рубрики: LINEAR-CHAINS
DISPERSION-RELATIONS
ARRAYS
RESONANCES
GUIDES
NANOSPHERES
MODES
FIELD
POLARITONS
PARTICLES
Аннотация: We have studied numerically the propagation of surface plasmon polaritons (SPPs) in linear periodic chains of plasmonic nanoparticles of different shapes. The chains are deposited on top of a thick dielectric substrate. While in many commonly considered cases the substrate tends to suppress the SPP propagation, we have found that this adverse effect is practically absent in the case when the nanoparticles have the shape of oblate spheroids with sufficiently small aspect ratio (e.g., nanodisks) whose axes of symmetry coincide with the axis of the chain. © 2016 AIP Publishing LLC.
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