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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rudakova N. V., Timofeev I. V., Vetrov S. Y.
Заглавие : Optical properties of nanostructured 2D metal-dielectric photonic crystals with a lattice defect
Коллективы : federal targeted program "Scientific and Pedagogical Personnel of Innovative Russia" [g/k 14.V37.21.0730]; Presidium of the Siberian Branch of the Russian Academy of Sciences [24.29]; Ministry of Education and Science of the Russian Federation [14.V37.21.0730]; OFN RAS [III.9.5]; Presidium of RAS [24.29, 24.31]; Siberian Branch of the Russian Academy of Sciences [43, 101]
Место публикации : Opt. Spectrosc.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2013. - Vol. 115, Is. 5. - P.660-665. - ISSN 0030-400X, DOI 10.1134/S0030400X13110209
Примечания : Cited References: 23. - This work was supported by the grants g/k 14.V37.21.0730 of the federal targeted program "Scientific and Pedagogical Personnel of Innovative Russia"; no. 24.29 of Presidium of the Siberian Branch of the Russian Academy of Sciences; the Ministry of Education and Science of the Russian Federation, Agreement 14.V37.21.0730; OFN RAS no. III.9.5; Presidium of RAS nos. 24.29 and 24.31; and Siberian Branch of the Russian Academy of Sciences, nos. 43 and 101.
Аннотация: Optical properties of 2D nanocomposite-based photonic crystals with a lattice defect are studied. The nanocomposite comprises metallic nanospheres dispersed in a transparent matrix and is characterized by an effective resonant permittivity. Transmission spectrum for s-polarized waves at oblique incidence is calculated. Spectral manifestation of the splitting of the defect mode when its frequency coincides with the resonant frequency of the nanocomposite is studied. The essential dependence of the splitting on the angle of incidence and concentration of metallic nanospheres in the nanocomposite matrix is established. Specific features of spatial distribution of the electric field intensity in defect modes of crystals are analyzed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vetrov S. Y., Rudakova N. V., Timofeev I. V., Timofeev V. P.
Заглавие : Spectral properties of a two-dimensional resonant metal-dielectric photonic crystal
Место публикации : Opt. Spectrosc.: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 112, Is. 4. - P.585-593. - ISSN 0030-400X, DOI 10.1134/S0030400X12030204
Примечания : Cited References: 17. - This work was supported by grants RNP no. 2.1.1/3455, OFN RAN no. 3.9.1, Presidium of the Russian Academy of Sciences no. 21.1, and "Integration" SO RAN nos. 5 and 144.
Предметные рубрики: HETEROGENEOUS MEDIA
OPTICAL-PROPERTIES
Аннотация: We have studied the transmission spectra of resonant two-dimensional photonic crystals of two types, one of which consists of nanocomposite cylinders that form a square lattice in vacuum and the other of which consists of cylindrical holes that form a square lattice in nanocomposite matrix. The nanocomposite consists of metallic nanospheres that are dispersed in a transparent matrix and is characterized by an effective resonant dielectric permittivity. We show that, depending on the position of the resonant frequency of the nanocomposite with respect to the boundaries of the band gap, there arises either an additional transmission band in the transmission spectrum in the band gap or an additional band gap in the continuous spectrum of the photonic crystal. As the structural and geometric parameters of the system change, both the additional transmission band and the additional band gap are considerably modified. We analyze particular features of the spatial distribution of the electromagnetic field intensity in crystals. The considered effects can be used to extend the possibilities of creating new photonic crystals with specified properties.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vetrov S.Ya., Rudakova N. V., Timofeev I. V.
Заглавие : Features of a two-dimensional photonic crystal filled with resonance gas
Место публикации : J. Opt. Technol.: Optical Society of America, 2010. - Vol. 77, Is. 10. - P.608-609. - ISSN 1070-9762, DOI 10.1364/JOT.77.000608
Примечания : Cited References: 3
Аннотация: The band structure has been calculated for a two-dimensional photonic crystal consisting of infinite cylindrical openings filled with a resonance gas and forming a square lattice in a dielectric matrix An additional narrow transmission band close to the edge of the band gap has been detected, along with an additional band gap in the continuous spectrum of the photonic crystal The novel dispersion properties substantially depend on the fraction of resonance gas in the photonic crystal, as well as on the density of the resonance gas and the position of the resonance frequency relative to the edge of the band gap (C) 2010 Optical Society of America
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vetrov S.Ya., Timofeev I. V., Rudakova N. V.
Заглавие : Band structure of a two-dimensional resonant photonic crystal
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2010. - Vol. 52, Is. 3. - P.527-532. - ISSN 1063-7834, DOI 10.1134/S1063783410030133
Примечания : Cited References: 16. - This study was supported by the Council on Grants from the President of the Russian Federation (grant nos. 3818.2008.3 and 1292.2008.2), the Ministry of Education and Science of the Russian Federation within the framework of the program "Development of the Scientific Potential of the Higher School" (RNP no. 2.1.1/3455), the Presidium of the Russian Academy of Sciences (project no. 27.1), and the Siberian Branch of the Russian Academy of Science (project nos. 5 and 144).
Предметные рубрики: TRANSMISSION
LASER
Аннотация: The band structure of two-dimensional resonant photonic crystals of two types has been calculated using the expansion of eigenfunctions in plane waves. Crystals of one type consist of infinite dielectric cylinders forming a square lattice filled with a resonant gas, and crystals of the other type consist of infinite cylindrical holes filled with a resonant gas and forming a square lattice in a dielectric matrix. It has been shown that, in both cases, the dispersion of a resonant gas in combination with the dispersion of a two-dimensional structure with a photonic band gap leads to the appearance of an additional narrow transmission band near the edge of the band gap or an additional band gap in the continuous spectrum of the photonic crystal. The calculations performed have demonstrated that new dispersion properties substantially depend on the density of the resonant gas, the position of the resonant frequency with respect to the edge of the band gap, and the direction of propagation of electromagnetic waves.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vetrov S. Y., Timofeev I. V., Rudakova N. V.
Заглавие : Transmission of Light through a Plane-Parallel Plate of a Two-Dimensional Resonant Photonic Crystal
Разночтения заглавия :авие SCOPUS: Transmission of light through a plane-parallel plate of a two-dimensional resonant photonic crystal
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 53, Is. 1. - P133-138. - ISSN 1063-7834, DOI 10.1134/S1063783411010355
Примечания : Cited References: 21. - This study was supported by the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools (project no. NSh-7810.2010.3), the Federal Agency for Education of the Russian Federation within the State Program "Development of the Potential of the Higher School of the Russian Federation" (project no. RNP.2.1.1.3455), the Russian Academy of Sciences (program nos. 27.1 and 3.91), the Siberian Branch of the Russian Academy of Sciences (program nos. 5 and 144), and the Federal Agency for Science and Innovation of the Russian Federation within the Russian Federal Target Program "Scientific and Scientific-Pedagogical Personnel of the Innovative Russia" (state contract 02.740.11.0220).
Предметные рубрики: DISPERSION
Аннотация: The transmission spectra of two-dimensional resonant photonic crystals of two types have been investigated. Crystals of one type consist of dielectric cylinders forming a square lattice filled by a resonant gas with mercury atoms, and crystals of the other type consist of cylindrical holes filled with a gas and forming a square lattice in a dielectric matrix. It has been established that characteristics of the spectrum of additional transmission arising in the band gap of the photonic crystal can be changed significantly by varying the gas pressure and the angle of incidence. It has been demonstrated that the calculated features in the transmission spectrum of the photonic crystal are stable with respect to a significant increase in the width of the atomic resonance.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rudakova N. V., Timofeev I. V., Pankin P. S., Vetrov S. Ya.
Заглавие : Polarization-preserving anisotropic mirror on the basis of metal–dielectric nanocomposite
Место публикации : Bull. Russ. Acad. Sci. Phys.: Allerton Press, 2017. - Vol. 81, Is. 1. - P.5-9. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873817010257
Примечания : Cited References: 11. - The reported study was funded by the Ministry of Education and Science of the Russian Federation, project no. 3.1211.2017/PCH; SB RAS no. II.2P (0358-2015-0010); Scholarship of the President of the Russian Federation no. SP-227.2016.5; RFBR and Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project no. 16-42-243065.
Ключевые слова (''Своб.индексиров.''): anisotropy--metal nanoparticles--mirrors--nanocomposites--nanoparticles--polarization--silver--a-plane--reflected light--reflection spectra--transparent matrix--metallic matrix composites
Аннотация: The model of a polarization-preserving anisotropic mirror is proposed. The mirror is a plane boundary of a metal–dielectric nanocomposite that consists of silver spheroidal nanoparticles dispersed in a transparent matrix. The dependence of reflection spectra on the shape of the nanoparticles is studied. It is shown that in one region of the spectrum, the mirror preserves the sign of polarization in the reflected light. © 2017, Allerton Press, Inc.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Rudakova N. V., Timofeev I. V., Bikbaev R. G., Vetrov S. Ya., Lee W.
Заглавие : Chiral optical Tamm states at the interface between a cholesteric and an all-dielectric polarization-preserving anisotropic mirror
Коллективы : International Liquid Crystal Conference
Место публикации : Abstracts of 27th International Liquid Crystal Conference (ILCC 2018). - 2018. - Ст.4-D-12
Примечания : Cited References: 3
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Rudakova N. V., Timofeev I. V., Vetrov S. Ya., Lee W.
Заглавие : High-Q nodes-free mode for lasing
Коллективы : Progress in Electromagnetics Research Symposium
Место публикации : Progress in Electromagnetics Research Symposium: Abstracts. - 2018. - P.2013
Примечания : Cited References: 3
Аннотация: Discrete-chiral medium [1] is a set of slab-sided layers of anisotropic material with optical axis constantly rotating layer by layer. Right-angled rotation produces an alternation of vertically and horizontally oriented layers (Fig. 1(a), inset). The structure transforms from chiral to non-chiral (ambichiral) one. On the one hand, the discrete-ambichiral medium possesses a polarisation-independent stopband, similar to multilayer mirror made of isotropic materials. On the other hand, similar to continuous-chiral medium, like cholesteric liquid crystal or chiral sculptured thin ﬁlm, the reﬂected light has the same sign of circular polarization as the incident light. On the basis of such chiral mirrors the ideas of nodes-free laser [2] and surface light localization [3] were proposed. In this study a new high-quality nodes-free mode in all-dielectric structure is examined for eﬃcient lasing. The reason for removed nodes and antinodes (Fig. 1(a)) is the suppressed interference for orthogonally polarized oppositely running waves [2]. The nodes-free standing wave in the laser active layer is advantageous in spacially homogeneous pumping and consequent growth of eﬃcient and stability. Another opportunity is that the in-plane rotation of one mirror by ϕ changes the Pancharatnam Berry phase by 2ϕ and smoothly shifts the mode frequency (Fig. 1(b)). Clockwise rotation shifts the right circularly polarized eigenmodes to shorter wavelengths and left circularly polarized ones to longer wavelengths.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pyatnov M. V., Timofeev I. V., Vetrov S. Ya., Rudakova N. V.
Заглавие : Coupled chiral optical Tamm states in cholesteric liquid crystals
Место публикации : Photonics. - 2018. - Vol. 5, Is. 4. - Ст.30. - ISSN 23046732 (ISSN), DOI 10.3390/photonics5040030
Примечания : Cited References: 38. - This research was funded by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund, to the research Project Nos. 17-42-240464 and 18-42-243025.
Ключевые слова (''Своб.индексиров.''): cholesteric liquid crystal--optical tamm states--localization--transmission spectrum--optical devices
Аннотация: The modes formed by two coupled chiral optical Tamm states localized at the interfaces between a photonic cholesteric liquid crystal conjugated with polarization-preserving anisotropic mirrors have been analytically and numerically investigated. These modes are only excited at the diffracting polarization of incident light. As the cholesteric layer thickness decreases, the spectral splitting of the localized state frequency is predicted. The splitting value depends on the crystal layer thickness. At the nondiffracting circular polarization, the localized modes are not excited, and the system becomes similar to the Fabry-Perot cavity containing an anisotropic helical structure.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rudakova N. V., Timofeev I. V., Vetrov S. Ya., Lee W.
Заглавие : All-dielectric polarization-preserving anisotropic mirror
Место публикации : OSA Contin. - 2018. - Vol. 1, Is. 2. - P.682-689. - ISSN 2578-7519, DOI 10.1364/OSAC.1.000682
Примечания : Cited References: 39. - Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund (17-42-240464). Ministry of Science and Technology, Taiwan (MOST) (106-2923-M-009-002-MY3).
Предметные рубрики: Nanophotonics, Metamaterials, and Photonic Crystals
Ключевые слова (''Своб.индексиров.''): cholesteric liquid crystals--circular polarization--electric fields--optical devices--phase plates--refractive index
Аннотация: The structure consisting of alternating uniaxial dielectric layers is known to produce reflection of the same polarization as the incident field; e.g., the right-hand elliptically polarized light preserves this right-handedness and ellipticity of polarization at reflection. The parameters permitting the properly-polarized reflectance to exceed 99% in a wide frequency range were considered both analytically and numerically. The mirror with tuned top-layer thickness is shown to have several times less polarization losses than the uniform mirror. The hybrid mirror with metallic bottom layer has a considerably reduced thickness.
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