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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shabanov A. V., Vetrov S. Y., Karneev A. Y.
Заглавие : Reflection spectrum of a cholesteric liquid crystal with structural defects
Место публикации : JETP Letters. - 2004. - Vol. 80, Is. 3. - P.181-184. - ISSN 0021-3640, DOI 10.1134/1.1808846
Примечания : Cited References: 13
Предметные рубрики: MODES
Аннотация: An expression is obtained for the reflection coefficient of circularly polarized light normally incident on the film of a cholesteric liquid crystal with a variable helix pitch. It is shown that, in the case of a single defect (local change in the helix pitch), the spectrum of light reflection from a cholesteric acquires a dip corresponding to the defect mode. New qualitative features appear in the reflection spectrum of a cholesteric with two defects as the distance between them varies. (C) 2004 MAIK "Nauka/Interperiodica".
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vetrov S. Y., Shabanov A. V.
Заглавие : Localized electromagnetic modes and the transmission spectrum of a one-dimensional photonic crystal with lattice defects
Место публикации : J. Exp. Theor. Phys.: AMER INST PHYSICS, 2001. - Vol. 93, Is. 5. - P977-984. - ISSN 1063-7761, DOI 10.1134/1.1427109
Примечания : Cited References: 26
Предметные рубрики: BAND-GAP
SPONTANEOUS EMISSION
SUPERLATTICES
WAVES
PROPAGATION
LIGHT
EDGE
Аннотация: The properties of localized electromagnetic modes in a one-dimensional photonic crystal with a structural defect layer were studied. The role of the defect was played by an anisotropic nematic liquid crystal layer. The frequency and the damping factor of defect modes were shown to substantially depend on the defect layer thickness and the orientation of the optical axis of the nematic. The transmission spectra of photonic crystals with one and two lattice defects were studied. Taking into account the special feature of nematic liquid crystals distinguishing them from usual crystals, namely, large permittivity anisotropy, it was shown that the transmission spectrum of the photonic crystal could be controlled by varying the orientation of the optical axis of the nematic, for instance, under the action of an external electric field. (C) 2001 MAIK "Nauka/Interperiodica".
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shabanov A. V., Presnyakov V. V., Zyryanov V. Y., Vetrov S. Y.
Заглавие : Characteristics of the process of reorientation of bipolar drops of a nematic with rigidly fixed poles
Место публикации : JETP Letters. - 1998. - Vol. 67, Is. 9. - P.733-737. - ISSN 0021-3640, DOI 10.1134/1.567739
Примечания : Cited References: 9
Аннотация: The director configuration in a bipolar drop of a nematic with rigidly fixed poles is calculated as a function of the electric field directed perpendicular to the symmetry axis of the drop. It is shown that the reorientation of the drop is a dual process: a threshold process in the region where the initial director orientation is orthogonal to the electric field, and a nonthreshold process elsewhere in the drop. A relation for determining the critical field is obtained. Experimental investigations of the characteristics of scattered light for a film of polymer-encapsulated liquid crystals confirm the computational results. (C) 1998 American Institute of Physics. [S0021-3640(98)01709-5].
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Arkhipkin V. G., Myslivets S. A., Timofeev I. V., Shabanov A. V., Vetrov S. Ya., Timofeev V. P.
Заглавие : Photonic crystals with resonantly absorbing defects
Коллективы : International Conference on Laser and Fiber-Optical Networks Modeling (8; 2006 ; Jun 29-Jul 01; Kharkiv)
Место публикации : LFNM 2006: 8th International Conference on Laser and Fiber-Optical Networks Modeling, Proceedings: IEEE, 2006. - P.313-316. - ISBN 1-4244-0233-6
Примечания : Cited References: 12
Предметные рубрики: MICROCAVITIES
DISPERSION
SPECTRA
Ключевые слова (''Своб.индексиров.''): photonic crystal--photonic band gap--resonantly absorbing gas--light localization
Аннотация: We show that the defect mode of photonic crystal with resonantly absorbing gas in defect is splitted due to effects of linear absorption and dispersion of resonant atoms. The splitting and shape of the lines is very sensitive to an incidence-angle of radiation on PC. The cases of one and two defects are considered.
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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) : Arkhipkin V. G., Gunyakov V. A., Myslivets S. A., Gerasimov V. P., Zyryanov V. Y., Vetrov S. Y., Shabanov V. F.
Заглавие : One-dimensional photonic crystals with a planar oriented nematic layer: Temperature and angular dependence of the spectra of defect modes
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2008. - Vol. 106, Is. 2. - P388-398. - ISSN 1063-7761, DOI 10.1134/S1063776108020179
Примечания : Cited References: 58
Предметные рубрики: LIQUID-CRYSTAL
TRANSMISSION SPECTRUM
BANDGAP STRUCTURES
PERIODIC STRUCTURE
REFRACTIVE-INDEX
LATTICE-DEFECTS
LASER
ENHANCEMENT
SILICON
MICROCAVITIES
Аннотация: Transmission spectra of a one-dimensional photonic crystal (PC) formed by two multilayer dielectric mirrors and a planar oriented layer of 5CB nematic liquid crystal (LC) that is sandwiched between these mirrors and serves as a structure defect are investigated experimentally. Specific features of the behavior of the spectrum of defect modes as a function of the angle of incidence of light on the crystal are studied for two polarizations: parallel and perpendicular to the director of the LC; the director either lies in the plane of incidence or is perpendicular to it. It is shown that, for the configurations considered, the maxima of the defect modes shift toward the short-wavelength region as the tilt angle of incidence radiation increases; this tendency is more manifest for the parallel-polarized component, when the director lies in the plane of incidence. In the latter case, the width of the photonic band gap (PBG) appreciably decreases. The temperature dependence of the polarization components of the transmission spectra of a PC is investigated in the case of normal incidence of light. The spectral shift of defect modes due to the variation of the refractive index of the LC at the nematic-isotropic liquid phase transition point is measured. It is shown that, in real PCs, the amplitude of defect modes decreases when approaching the center of the band gap, as well as when the number of layers in the dielectric mirrors increases. Theoretical transmission spectra of the PCs calculated by the method of recurrence relations with regard to the decay of defect modes are in good agreement with experimental data.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : VETROV S. Y.
Заглавие : VIBRATION ATTENUATION IN MICROCRYSTALS INTERACTING WITH MATRICES
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1985. - Vol. 27, Is. 5. - P1429-1435. - ISSN 0367-3294
Примечания : Cited References: 12
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bikbaev R. G., Vetrov S. Y., Timofeev I. V., Shabanov V. F.
Заглавие : Nanoparticle shape optimization for Tamm-plasmon-polariton-based organic solar cells in the visible spectral range
Место публикации : Photonics. - 2022. - Vol. 9, Is. 11. - Ст.786. - ISSN 23046732 (ISSN), DOI 10.3390/photonics9110786
Примечания : Cited References: 28. - The reported study was funded by a grant of the President of the Russian Federation №MK-46.2021.1.2
Аннотация: The effect of the shape of the nanoparticles and the polarization of incident light on the surface current density and the efficiency of an organic solar cell based on the Tamm plasmon polariton is investigated. In the cases of both elongated and flattened nanoparticles, it is shown that the efficiency of such a solar cell is increased when the electric field vector is parallel to the largest axis of the spheroid.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Gunyakov V. A., Myslivets S. A., Gerasimov V. P., Arkhipkin V. G., Zyryanov V. Ya., Shabanov V. F., Shabanov A. V., Vetrov S. Y., Kamaev G. N.
Заглавие : Control of transmission spectra of planar photonic crystal with LC defect
Коллективы : XV International Symposium on Advanced Display Technologies
Место публикации : Proceedings of SPIE - The International Society for Optical Engineering/ sponsors: SPIE Russia Chapter, P.N. Lebedev Physical Institute, Russia, Russian Foundation of Basic Research, Society for Information Display, Russia, European Office of Aerospace Research and Development ; XV International Symposium on Advanced Display Technologies (2006 ; 03.10 - 05.10 ; Moscow). - 2007. - 6637. - С. 66370L. - ISBN 0819467847, DOI 10.1117/12.742890 (Шифр 16957385)
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gunyakov V. A., Gerasimov V. P., Myslivets S. A., Arkhipkin V. G., Vetrov S. Y., Kamaev G. N., Shabanov A. V., Zyryanov V. Y., Shabanov V. F.
Заглавие : Thermooptical switching in a one-dimensional photonic crystal
Место публикации : Tech. Phys. Lett.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2006. - Vol. 32, Is. 11. - P951-953. - ISSN 1063-7850, DOI 10.1134/S1063785006110137
Примечания : Cited References: 9
Аннотация: The temperature dependence of the optical transmission spectrum of a one-dimensional multilayer photonic crystal structure with a central defect layer has been studied. The defect was represented by a nematic liquid crystal (5CB) layer with a homeotropic orientation. It is shows that the defect modes exhibit a 10-nm spectral shift due to a change in the refractive index of the liquid crystal in the course of heating-induced transition to the isotropic phase. A comparison of the experimental data to the results of heating-induced transition to the isotropic phase. A comparison of the experimental data to the results of numerical analysis shows the importance of allowance for the decay of defect modes.
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