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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pyatnov M. V., Bikbaev R. G., Timofeev I. V., Ryzhkov I. I., Vetrov S. Ya., Shabanov V. F.
Заглавие : Broadband Tamm plasmons in chirped photonic crystals for light-induced water splitting
Место публикации : Nanomaterials. - 2022. - Vol. 12, Is. 6. - Ст.928. - ISSN 20794991 (ISSN), DOI 10.3390/nano12060928
Примечания : Cited References: 41
Аннотация: An electrode of a light-induced cell for water splitting based on a broadband Tamm plasmon polariton localized at the interface between a thin TiN layer and a chirped photonic crystal has been developed. To facilitate the injection of hot electrons from the metal layer by decreasing the Schottky barrier, a thin n-Si film is embedded between the metal layer and multilayer mirror. The chipping of a multilayer mirror provides a large band gap and, as a result, leads to an increase in the integral absorption from 52 to 60 percent in the wavelength range from 700 to 1400 nm. It was shown that the photoresponsivity of the device is 32.1 mA/W, and solar to hydrogen efficiency is 3.95%.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Rudakova N. V., Timofeev I. V., Bikbaev R. G., Pyatnov M. V., Vetrov S. Ya., Chen K.-P., Lee W.
Заглавие : Chiral optical Tamm state at the interface between multilayer polarization-preserving anisotropic mirror and cholesteric
Коллективы : Asian Conference on Liquid Crystals
Место публикации : The 4th Asian Conference on Liquid Crystals (ACLC 2019): abstracts. - 2019. - P.
Примечания : Библиогр.: 4
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Avdeeva A. Yu., Vetrov S. Ya., Bikbaev R. G., Pyatnov M. V., Rudakova N. V., Timofeev I. V.
Заглавие : Chiral optical Tamm states at the interface between a Dye-doped cholesteric liquid crystal and an anisotropic mirror
Коллективы : Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund [19-42-240004]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-52-52006]
Место публикации : Materials. - 2020. - Vol. 13, Is. 15. - Ст.3255. - ISSN 1996-1944(eISSN), DOI 10.3390/ma13153255
Примечания : Cited References: 44. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 19-42-240004 and by Russian Foundation for Basic Research, project No. 19-52-52006
Предметные рубрики: PHASE
POLARIZATION
MODES
Аннотация: The resonant splitting of optical Tamm state numerically is demonstrated. The Tamm state is localized at the interface between a resonant chiral medium and a polarization-preserving anisotropic mirror. The chiral medium is considered as a cholesteric liquid crystal doped with resonant dye molecules. The article shows that the splitting occurs when dye resonance frequency coincides with the frequency of the Tamm state. In this case the reflectance, transmittance, and absorptance spectra show two distinct Tamm modes. For both modes, the field localization is at the interface between the media. The external field control of configurable optical and structural parameters paves the way for use in tunable chiral microlaser.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rudakova N. V., Timofeev I. V., Bikbaev R. G., Pyatnov M. V., Vetrov S. Ya., Lee W.
Заглавие : Chiral optical Tamm states at the interface between an all-dielectric polarization-preserving anisotropic mirror and a cholesteric liquid crystal
Место публикации : Crystals. - 2019. - Vol. 9, Is. 10. - Ст.502. - ISSN 20734352 (ISSN), DOI 10.3390/cryst9100502
Примечания : Cited References: 48. - Russian Foundation for Basic Research (RFBR), Russia, grant No. 19-52-52006; Ministry of Science and Technology, Taiwan (MOST), grant No. 106-2923-M-009-002-MY3; M.V.P. thanks RFBR and KRSTSF for the research Project No. 18-42-243025.
Аннотация: As a new localized state of light, the chiral optical Tamm state exists at the interface between a polarization-retaining anisotropic mirror and a substance with optical activity. Considering a hybrid structure comprising a metal-free polarization-preserving mirror and a cholesteric liquid crystal, we highlight the high Q factor arising from the all-dielectric framework. The intensity of localized light decreases exponentially with increasing distance from the interface. The penetration of the field into the cholesteric liquid crystal is essentially prohibited for wavelengths lying in the photonic bandgap and close to the cholesteric pitch length. The dielectric mirror has its own photonic bandgap. The energy transfer along the interface can be effectively switched off by setting the tangential wave vector to zero. The spectral behavior of the chiral optical Tamm state is observed both as reflection and transmission resonance. This Fano resonance is analogous to the Kopp-Genack effect. Our analytics are well in line with precise calculations, which may pave a new route for the future development of intelligent design for laser and sensing applications.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Pyatnov M. V., Vetrov S. Ya., Timofeev I. V.
Заглавие : Controlled photonic surface modes in 'cholesteric liquid crystal - Phase plate - Metal' structure
Коллективы : Progress In Electromagnetics Research Symposium
Место публикации : Progress in Electromagnetics Research Symposium: Proceedings. - 2015. - Vol. 2015-January. - P.224-227. - ISBN 9781934142301
Ключевые слова (''Своб.индексиров.''): cholesteric liquid crystals--crystal structure--light transmission--liquid crystals--liquids--optical kerr effect--plates (structural components)--chiral media--external fields--forward-and-backward--light transmission spectra--propagation of lights--surface modes--waveguide surfaces--plate metal
Аннотация: Light transmission spectrum has been calculated for a 'cholesteric liquid crystal-phase plate-metal' structure. It is shown that the system can have an isolated waveguide surface mode with characteristics efficiently controllable by external fields acting on the cholesteric. This mode is similar to optical Tamm state. We observed anisotropy of transmission of the structure under consideration in the propagation of light of a certain polarization in forward and backward directions. This property is inherent in optically chiral media, such as the cholesteric liquid crystal.
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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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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Pyatnov M. V., Timofeev I. V., Vetrov S. Ya.
Заглавие : Coupled chiral optical Tamm states in liquid crystals
Коллективы : Asian Conference on Liquid Crystals
Место публикации : The 4th Asian Conference on Liquid Crystals (ACLC 2019): abstracts. - 2019. - Ст.P-78
Примечания : Библиогр.: 3
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Вид документа : Статья из сборника (том многотомника)
Шифр издания :
Автор(ы) : Орешонков, Александр Сергеевич, Попов, Захар Иванович
Заглавие : DFT-моделирование спектров КРС монослоёв XMoY (X=S, Se; Y=Se, Te, O)
Коллективы : 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", "Енисейская фотоника", Всероссийская научная конференция с международным участием
Место публикации : Енисейская фотоника-2022: тезисы докладов : в 2-х т./ Сиб. федер. ун-т [и др.]. - Красноярск, 2022. - Т. 1, Секция 1: Новые оптические материалы. - С. 89. - ISBN 978-5-6045250-1-2
Примечания : Библиогр.: 2
Аннотация: В работе выполнено численное моделирование спектров комбинационного рассеяния света монослоёв XMoY (X=S, Se; Y=Se, Te, O). Валидность используемого подхода подтверждена путём сравнения полученных спектров с имеющимися экспериментальными данными. Проанализированы как графеноподобные 1H и 1T фазы, так и монослои со структурами 1Tʹ, 1Hʹ, 1Aʹ и 1S.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vetrov S. Ya., Avdeeva A. Yu., Pyatnov M. V., Timofeev I. V.
Заглавие : Hybrid Tamm-cavity modes in photonic crystal with resonant nanocomposite defect layer
Место публикации : Комп. оптика. - 2020. - Т. 44, № 3. - С.319-324. - ISSN 01342452 (ISSN), DOI 10.18287/2412-6179-CO-637; Comput. Opt.
Примечания : Библиогр.: 32. - 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 No 18-42-243025
Аннотация: Hybrid optical modes in a one-dimensional photonic crystal with a resonant nanocomposite defect bounded by a metallic layer are studied. The nanocomposite consists of spherical metallic constituents, that are distributed in a dielectric matrix. Transmittance, reflectance, and absorbance spectra of this structure, which is shined by light with normal incidence, are calculated. The possibility of control of the hybrid modes spectral characteristics by changing the thickness of the layer adjacent to the metal, the number of layers, and the nanocomposite filling factor is shown.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pyatnov M. V., Vetrov S. Ya., Timofeev I. V.
Заглавие : Localized optical modes in a defect-containing liquid-crystal structure adjacent to the metal
Место публикации : J. Opt. Soc. Am. B: Optical Society of America, 2017. - Vol. 34, Is. 9. - P.2011-2017. - ISSN 07403224 (ISSN), DOI 10.1364/JOSAB.34.002011
Примечания : Cited References: 44. - Russian Foundation for Basic Research (RFBR), Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund (17-42-240464).
Ключевые слова (''Своб.индексиров.''): cholesteric liquid crystals--crystal defects--defects--liquid crystals--liquids--metals--optical kerr effect--polarization--diffraction reflections--external fields--field localization--maximum field intensity--metallic layers--polarization dependence--spectral properties--transmittance spectra--crystal structure
Аннотация: The possibility of the existence of localized optical modes with maximum field intensity at the interface between the metal and cholesteric liquid crystal is theoretically grounded. The system comprises a defect-containing cholesteric liquid crystal and a metal layer. It is established that the localization occurs at almost any defect thickness rather than only at the half-wave thickness, at which the loss of the polarization dependence of diffraction reflection and the absence of field localization are observed for the structure without the metallic layer. It is demonstrated that the spectral properties can be controlled by external fields affecting the liquid crystal. At large thicknesses of the cholesteric liquid crystal between the defect and the metallic layer, the spectrum contains the pronounced peaks corresponding to the edge modes. The results obtained open new opportunities for controlling the transmittance spectrum, polarization, and localization of light in optoelectronic elements based on the investigated system. © 2017 Optical Society of America.
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