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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Sadreev A. F.
Заглавие : Light trapping above the light cone in a one-dimensional array of dielectric spheres
Коллективы : Russian Science Foundation [14-12-00266]
Место публикации : Phys. Rev. A: American Physical Society, 2015. - Vol. 92, Is. 2. - Ст.023816. - ISSN 1050, DOI 10.1103/PhysRevA.92.023816. - ISSN 10941622(eISSN)
Примечания : Cited References:62. - The work was supported by the Russian Science Foundation through Grant No. 14-12-00266. We acknowledge discussions with D. N. Maksimov.
Предметные рубрики: CLASSICAL ELECTROMAGNETIC SCATTERING
ENERGY PHOTON DIFFRACTION
BLOCH SURFACE-WAVES
RADIATION CONTINUUM
MULTIPLE-SCATTERING
CONSUMMATE SOLUTION
LINEAR ARRAYS
BOUND-STATES
MODES
GUIDES
Аннотация: We demonstrate bound states in the first TE and TM diffraction continua (BSC) in a linear periodic array of dielectric spheres in air above the light cone. We classify the BSCs according to the symmetry specified by the azimuthal number m, the Bloch wave vector β directed along the array, and polarization. The most simple symmetry-protected TE and TM polarized BSCs have m=0 and β=0 and occur in a wide range of the radii of the spheres and dielectric constants. More complicated BSCs with m≠0 and β=0 exist only for a selected radius of the spheres at a fixed dielectric constant. We also find robust Bloch BSCs with β≠0 and m=0. We present also the BSCs embedded into two and three diffraction continua. We show that the BSCs can be easily detected by the collapse of the Fano resonance for scattering of electromagnetic plane waves by the array.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sadreev A. F.
Заглавие : Enhancement of Rayleigh scattering in a two-dimensional Fabry-Perot resonator loaded with impurities
Коллективы : Russian Science Foundation (RSF) [14-12-00266]
Место публикации : J. Opt. Soc. Am. A: Optical Society of America, 2016. - Vol. 33, Is. 7. - P.1277-1282. - ISSN 1084-7529, DOI 10.1364/JOSAA.33.001277. - ISSN 1520-8532(eISSN)
Примечания : Cited References:32. - Russian Science Foundation (RSF) (14-12-00266)
Предметные рубрики: COUPLED-MODE THEORY
MULTIPLE-SCATTERING
NUCLEAR REACTIONS
UNIFIED THEORY
RANDOM-MEDIA
TRANSMISSION
PARTICLES
WAVES
LIGHT
STRIP
Аннотация: We study wave transmission through a Fabry-Perot resonator (FPR) loaded with point-like impurities. We show both analytically in the framework of the coupled mode theory and numerically that there are two different regimes for transmission dependent on the quality of the FPR mirrors. For low quality, we obtain transmittance very similar to the clean FPR with slightly shifted Lorentz peaks. However, for good quality, the transmittance peaks are strongly reduced and substituted with Gaussian peaks because of multiple scattering of waves by each impurity. As a side effect, we observe the angular (channel) conversion in the disordered FPR. We demonstrate that the resonant peaks are dependent on the concentration of impurities to pave a way for resonant measurement of the concentration. (C) 2016 Optical Society of America
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Pichugin K. N., Sadreev A. F.
Заглавие : Evolution of the resonances of two parallel dielectric cylinders with distance between them
Коллективы : Ministry of Education and Science of Russian FederationMinistry of Education and Science, Russian Federation [3.1845.2017]; Russian Foundation for Basic research RFBRRussian Foundation for Basic Research (RFBR) [19-02-00055]
Место публикации : Phys. Rev. A. - 2019. - Vol. 100, Is. 4. - Ст.043806. - ISSN 2469-9926, DOI 10.1103/PhysRevA.100.043806. - ISSN 2469-9934(eISSN)
Примечания : Cited References: 37. - We acknowledge discussions with D. N. Maksimov. This work was partially supported by Ministry of Education and Science of Russian Federation (State Contract No. 3.1845.2017) and The Russian Foundation for Basic research RFBR Grant No. 19-02-00055.
Предметные рубрики: WHISPERING-GALLERY MODES
MULTIPLE-SCATTERING
FACTOR ENHANCEMENT
Аннотация: We study evolution of resonant modes by traversing over the distance between two parallel dielectric cylinders. The processes of mutual scattering of Mie resonant modes by cylinders result in an interaction between the cylinders which lifts a degeneracy of resonances of the isolated cylinders. There are two basic scenarios of evolution. For strong interaction of cylinders resonances bypass the Mie resonances with increase of the distance. That scenario is typical for low-lying resonances (monopole and dipole). For weak interaction of cylinders the resonances are bound around the Mie resonances of isolated cylinders that form the second scenario. Both scenarios demonstrate a significant enhancement of the Q factor compared to the case of an isolated cylinder.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Pichugin K. N., Sadreev A. F.
Заглавие : Interaction between dielectric particles enhances the Q-factor
Коллективы : RFBRRussian Foundation for Basic Research (RFBR) [19-02-00055]; Ministry of Education and Science of Russian FederationMinistry of Education and Science, Russian Federation [3.1845.2017/4.6]
Место публикации : Adv. Electromagn. - 2019. - Vol. 8, Is. 4. - P.108-117. - ISSN 2119-0275, DOI 10.7716/aem.v8i4.1292
Примечания : Cited References: 36. - We acknowledge discussions with A.A. Bogdanov and D.N. Maksimov. This work was partially supported by RFBR grant 19-02-00055 and Ministry of Education and Science of Russian Federation (state contract N 3.1845.2017/4.6).
Предметные рубрики: WHISPERING-GALLERY MODES
MULTIPLE-SCATTERING
STATES
Аннотация: We study behavior of resonant modes with a distance between two dielectric resonators shaped as cylinders and disks. We reveal two basic scenarios of evolution of resonances with the distance between the cylinders. For larger distances and respectively weaker interaction of particles the resonances are bound around the resonances of isolated resonators and evolve by spiral way. For shorter distances and respectively stronger interaction the resonances bypass the isolated resonances. Both scenarios demonstrate considerable enhancement of the Q factor compared to the case of isolated particle.
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