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    All-dielectric photonic crystal microcavity with electrically tunable Q-factor / A. I. Krasnov, P. S. Pankin, D. S. Buzin [et al.] // 9th International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures : book of abstracts. - Saint-Petersburg, 2022. - Cited References: 3
   Перевод заглавия: Полностью диэлектрический фотоннокристаллический микрорезонатор с электрически управляемой добротностью

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk 660036, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia
Siberian State University of Science and Technology, Krasnoyarsk 660037, Russia
AO NPP Radiosvyaz, 660021 Krasnoyarsk, Russia

Доп.точки доступа:
Krasnov, A. I.; Pankin, P. S.; Панкин, Павел Сергеевич; Buzin, D. S.; Romanenko, G. A.; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Nabol, S. V.; Zelenov, F. V.; Masyugin, A. N.; Ветров, Степан Яковлевич; Vetrov, S. Ya.; Timofeev, I. V.; Тимофеев, Иван Владимирович; International School and Conference on optoelectronics, photonics, engineering and nanostructures(9 ; 2022 ; 24-27 May ; Saint Petersburg); Высшая школа экономики, НИУ; Санкт-Петербургский национальный исследовательский Академический университет имени Ж.И. Алфёрова Российской академии наук
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All-dielectric polarization-preserving anisotropic mirror / N. V. Rudakova [et al.] // OSA Contin. - 2018. - Vol. 1, Is. 2. - P. 682-689, DOI 10.1364/OSAC.1.000682. - 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). . - ISSN 2578-7519
Рубрики:
Nanophotonics, Metamaterials, and Photonic Crystals
Кл.слова (ненормированные):
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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Держатели документа:
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk 660041, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
Institute of Imaging and Biomedical Photonics, College of Photonics, National Chiao Tung University, Guiren Dist., Tainan 71150, Taiwan

Доп.точки доступа:
Rudakova, N. V.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Lee, W.
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Vetrov, S. Ya.
Anisotropy of nonlinear optical transmission at the edge of the photonic band gap of an apodized layered medium / S. Ya. Vetrov, I. V. Timofeev, A. V. Shabanov // Optics and Spectroscopy (English translation of Optika i Spektroskopiya). - 2008. - Vol. 104, Is. 5. - P. 751-755, DOI 10.1134/S0030400X08050172 . - ISSN 0030-400X
Кл.слова (ненормированные):
Anisotropy -- Light transmission -- Multilayers -- Photonic crystals -- Refractive index -- Spectrum analysis -- Transfer matrix method -- Multilayer structure -- Nonlinear effects -- Transmission spectrum -- Laser radiation
Аннотация: The effect of Kerr nonlinearity on the transmission of laser radiation in a one-dimensional photonic crystal has been investigated by the transfer-matrix method, modified to describe nonlinear effects. The crystal under study is a thin-film multilayer structure with a spatial distribution of the refractive index, which makes it possible to eliminate side bands in the transmission spectrum at each side of the photonic band gap and significantly increase the slope of the transmission curve. The transmission spectrum of such a photonic crystal structure has been studied for two opposite directions of laser radiation propagation. The anisotropy of nonlinear transmission is most pronounced near the edge of the photonic crystal band gap, which lies in the near-IR region. The proposed structure, having strong transmission anisotropy and sufficiently low reflection in the forward direction, can operate as an optical diode (analog of an electron diode). В© 2008 Pleiades Publishing, Ltd.

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Держатели документа:
Polytechnic Institute, Siberian Federal University, Krasnoyarsk, 660074, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Shabanov, A. V.; Шабанов, Александр Васильевич; Ветров, Степан Яковлевич
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Anomalous light diffraction by cholesterics encapsulated in films / V. F. Shabanov, S. Ya. Vetrov, G. M. Zharkova, V. M. Khachaturyan // Journal of Molecular Electronics. - 1990. - Vol. 6, Is. 3. - P. 141-144

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Доп.точки доступа:
Shabanov, V. F.; Шабанов, Василий Филиппович; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Zharkova, G. M.; Khachaturyan, V. M.
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    Asymmetric resonant light absorption in a chloroplast microstructure / P. S. Pankin, A. V. Shabanov, D. N. Maksimov [et al.] // J. Opt. Soc. Am. B. - 2023. - Vol. 40, Is. 1. - P. 87-93, DOI 10.1364/JOSAB.477110. - Cited References: 45 . - ISSN 0740-3224. - ISSN 1520-8540
   Перевод заглавия: Асимметричное резонансное поглощение света в микроструктуре хлоропласта
Аннотация: It is shown that in the chloroplast periodic structure with a defect, the resonant absorption of light can be implemented. It is found that the resonant light absorption depends significantly on the position of a defect. In terms of the absorption of light energy, an asymmetric resonator is more efficient than a symmetric one.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia
Siberian Federal University, Krasnoyarsk, 660041, Russia
Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russia
AO NPP Radiosvyaz, Krasnoyarsk, 660021, Russia
Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia

Доп.точки доступа:
Pankin, P. S.; Панкин, Павел Сергеевич; Shabanov, A. V.; Шабанов, Александр Васильевич; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Nabol, S. V.; Наболь, Степан Васильевич; Buzin, D. S.; Бузин, Даниил Сергеевич; Krasnov, A. I.; Краснов, Алексей Ильдарович; Romanenko, G. A.; Романенко, Гавриил Александрович; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Zelenov, Fyodor V.; Masyugin, Albert N.; Vyatkin, Vladimir P.; Nemtsev, I. V.; Немцев, Иван Васильевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович
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Vetrov, S. Ya.
Band structure of a two-dimensional resonant photonic crystal / S. Y. Vetrov, I. V. Timofeev, N. V. Rudakova // Phys. Solid State. - 2010. - Vol. 52, Is. 3. - P. 527-532, DOI 10.1134/S1063783410030133. - 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). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
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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Держатели документа:
[Vetrov, S. Ya.
Rudakova, N. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Timofeev, I. V.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Rudakova, N. V.; Ветров, Степан Яковлевич
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Brewster-tilted Tamm plasmon-polariton with tunable Q factor / P. S. Pankin [et al.] // Progress in Electromagnetics Research Symposium : Abstracts. - 2018. - P. 789. - Cited References: 3
Аннотация: Tamm plasmon polariton (TPP) is an electromagnetic state at the interface of a metal and a dielectric Bragg mirror with slow propagation along the interface [1] similar to the Tamm state of electron localized at a semiconductor or metal surface. Generally the TPP supports both TE- and TM-polarizations. It can be utilized for narrowband ﬁlters, sensors, absorbers, emitters and polariton lasers. We consider a one-dimensional photonic crystal conju- gated with an opaque metal layer (Fig. 1(a)). Although made of isotropic materials the photonic crystal diﬀerentiates polarizations. At Brewster angle it becomes transparent for TM-waves (mag- netic ﬁeld orthogonal to the incidence plane) and still maintains opaqueness for TE-waves. So, Brewster-tilted TPP is TE-polarized only. For the purpose of the TPP energy release into TM- wave we introduce a thin anisotropic layer at the interface. Then we can freely rotate the sample in the plane of the layers or equivalently rotate the incident light beam along the Brewster-angled cone. The azimuthal angle φ between the incidence plane and the anisotropic layer optical axis governs the Q factor of the Brewster-tilted TPP by coupling to the TM-wave relaxation channel (Fig. 1(b)). At φ = 0◦ the Brewster-tilted TPP can be considered as a symmetry-protected bound state in the continuum [2]. This keeps valid for deviations from Brewster angle until TM-stopband is narrow. The considered layered structure is easier in fabrication compared to previously proposed in [3], which facilitates numerous applications.

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Доп.точки доступа:
Pankin, P. S.; Yang, J.-H.; Wu, B.-R.; Chen, K. -P.; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Progress in Electromagnetics Research Symposium(40 ; 2018 ; Aug.; 1-4 ; Toyama, Japan)
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    Broadband Tamm plasmon polariton / A. M. Vyunishev [et al.] // J. Opt. Soc. Am. B. - 2019. - Vol. 36, Is. 8. - P. 2299-2305, DOI 10.1364/JOSAB.36.002299. - Cited References: 50. - Russian Foundation for Basic Research (RFBR) (18-32-00053); Grant of the President of the Russian Federation (MK-2761.2019.2). . - ISSN 0740-3224. - ISSN 1520-8540
   Перевод заглавия: Широкополосный таммовский плазмон-поляритон

РУБ Optics
Рубрики:
PHOTONIC CRYSTAL
   OPTICAL-CONSTANTS
   PERFECT ABSORBER
   ABSORPTION
Аннотация: A broadband Tamm plasmon polariton localized at the interface between the Bragg mirror and a thin metallic layer has been theoretically and experimentally investigated. The possibility of a localized state formation has been demonstrated and energy coefficients at the Tamm plasmon polariton wavelength have been predicted in the framework of the coupled mode theory. The metallic layer material and thickness corresponding to the maximum coupling between the incident radiation and the Tamm plasmon polariton has been determined. Experimental reflectance and transmittance spectra of the structure consisting of the Bragg mirror and chromium layers of different thicknesses have been measured. The analysis of the energy spectra shows the existence of the wavelength range with the near-unity absorption coefficient inside the Bragg mirror bandgap. The use of chromium as a metal results in the broadband Tamm plasmon polariton excitation. It is demonstrated that the experimental data is in a good agreement with the calculation.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119991, Russia.
Skolkovo Inst Sci & Technol, Ctr Design Mfg & Mat, 3 Nobel St, Moscow 143026, Russia.

Доп.точки доступа:
Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Svyakhovskiy, Sergey E.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Pankin, P. S.; Панкин, Павел Сергеевич; Evlashin, Stanislav A.; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Russian Foundation for Basic Research (RFBR) [18-32-00053]; Russian Federation [MK-2761.2019.2]
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Broadband Tamm plasmons in chirped photonic crystals for light-induced water splitting / M. V. Pyatnov, R. G. Bikbaev, I. V. Timofeev [et al.] // Nanomaterials. - 2022. - Vol. 12, Is. 6. - Ст. 928, DOI 10.3390/nano12060928. - Cited References: 41 . - ISSN 2079-4991
Кл.слова (ненормированные):
water splitting -- plasmon catalysis -- solar-to-hydrogen efficiency -- photocurrent
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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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Computer Modelling, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Pyatnov, M. V.; Пятнов, Максим Владимирович; Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Timofeev, I. V.; Тимофеев, Иван Владимирович; Ryzhkov, I. I.; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович
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10.

Chiral optical Tamm state at the interface between multilayer polarization-preserving anisotropic mirror and cholesteric / N. V. Rudakova [et al.] // The 4th Asian Conference on Liquid Crystals (ACLC 2019) : abstracts. - 2019. - P. . - Библиогр.: 4

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Доп.точки доступа:
Rudakova, N. V.; Рудакова, Наталья Викторовна; Timofeev, I. V.; Тимофеев, Иван Владимирович; Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Pyatnov, M. V.; Пятнов, Максим Владимирович; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Chen, K.-P.; Lee, W.; Asian Conference on Liquid Crystals(4 ; 2019 ; Jan. 17-18 ; Shenzhen, China)
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11.

Timofeev, I. V.
Chiral optical Tamm states at the boundary of the medium with helical symmetry of the dielectric tensor / I. V. Timofeev, S. Y. Vetrov // JETP Letters. - 2016. - Vol. 104, Is. 6. - P. 380-383, DOI 10.1134/S0021364016180119. - Cited References: 7. - This work was performed within the framework of the state assignment from the Ministry of Education and Science of the Russian Federation for R&D at the Siberian Federal University (assignment no. 3.1276.2014/K). . - ISSN 0021-3640
Аннотация: A new optical state at the boundary of a chiral medium whose dielectric tensor has a helical symmetry is described analytically and numerically. The case of zero tangential wavenumber is considered. The state localized near the boundary does not transfer energy along this boundary and decreases exponentially with the distance from the boundary. The penetration of the field into the chiral medium is blocked at wavelengths corresponding to the photonic band gap and close to the pitch of the helix. The polarization of light near the boundary has the same sign of chirality as the helical symmetry. It is shown that the homogeneous environment or a substrate should exhibit anisotropic metallic reflection. The spectral manifestation of the state is determined by the angle between the optical axes of the media at the interface. A state at the interface between a cholesteric liquid crystal and an anisotropic metal–dielectric nanocomposite was considered as an example. © 2016, Pleiades Publishing, Inc.

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Публикация на русском языке Тимофеев, Иван Владимирович. Хиральные оптические таммовские состояния на границе среды с винтовой симметрией тензора диэлектрической проницаемости [Текст] / И. В. Тимофеев, С. Я. Ветров // Письма в Журн. эксперим. и теор. физ. : Наука, 2016. - Т. 104 Вып. 5-6. - С. 393-397

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Laboratory of Nonlinear Optics and Spectroscopy, Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Vetrov, S. Ya.; Ветров, Степан Яковлевич; Тимофеев, Иван Владимирович
}
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12.

Chiral optical Tamm states at the interface between a cholesteric and an all-dielectric polarization-preserving anisotropic mirror / N. V. Rudakova [et al.] // Abstracts of 27th International Liquid Crystal Conference (ILCC 2018). - 2018. - Ст. 4-D-12. - Cited References: 3

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Доп.точки доступа:
Rudakova, N. V.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Bikbaev, R. G.; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Lee, W.; International Liquid Crystal Conference(27 ; 2018 ; July ; 22-27 ; Kyoto, Japan)
}
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13.

Chiral optical Tamm states at the interface between a Dye-doped cholesteric liquid crystal and an anisotropic mirror / A. Yu. Avdeeva, S. Ya. Vetrov, R. G. Bikbaev [et al.] // Materials. - 2020. - Vol. 13, Is. 15. - Ст. 3255, DOI 10.3390/ma13153255. - 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 . - ISSN 1996-1944

РУБ Materials Science, Multidisciplinary
Рубрики:
PHASE
POLARIZATION
MODES
Кл.слова (ненормированные):
localization of light -- photonic crystals -- chirality -- dye-doped cholesteric liquid crystal -- optical Tamm states -- resonant frequency dispersion
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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Публикация в сборнике Soft photonic crystals and metamaterials [Текст] / ed., pref.: I. V. Timofeev, W. Lee, 2022. - VII с. ; 127 с. (Введено оглавление)

Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Avdeeva, A. Yu.; Авдеева, Анастасия Юрьевна; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Pyatnov, M. V.; Пятнов, Максим Владимирович; Rudakova, N. V.; Рудакова, Наталья Викторовна; Timofeev, I. V.; Тимофеев, Иван Владимирович; 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]
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14.

Chiral optical Tamm states at the interface between an all-dielectric polarization-preserving anisotropic mirror and a cholesteric liquid crystal / N. V. Rudakova [et al.] // Crystals. - 2019. - Vol. 9, Is. 10. - Ст. 502, DOI 10.3390/cryst9100502. - 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. . - ISSN 2073-4352
Кл.слова (ненормированные):
Optical Tamm state -- Cholesteric liquid crystal -- Polarization-preserving anisotropic mirror
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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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Imaging and Biomedical Photonics, College of Photonics, National Chiao Tung University, Tainan, 71150, Taiwan

Доп.точки доступа:
Rudakova, N. V.; Рудакова, Наталья Викторовна; Timofeev, I. V.; Тимофеев, Иван Владимирович; Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Pyatnov, M. V.; Пятнов, Максим Владимирович; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Lee, W.
}
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15.

Chiral optical Tamm states: coupled mode theory / I. V. Timofeev [et al.] // The 3rd Asian Conf. on Liq. Cryst. (ACLC 2017) : program book. - 2017. - Ст. IP-10. - P. 24. - Библиогр.: 3

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Timofeev, I. V.; Тимофеев, Иван Владимирович; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Lee, Wei; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Asian Conference on Liquid Crystals(3 ; 2017 ; Feb. 13-15 ; Tainan, Taiwan)
}
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16.

Chiral optical Tamm states: method of images / I. V. Timofeev [et al.] // Int. conf. "Days on diffraction" : Abstracts. - 2018. - P. 216-217

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Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Pankin, P. S.; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Lee, W.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; "Days on diffraction", International conference(2018 ; June ; 4-8 ; St. Petersburg); Санкт-Петербургское отделение Института математики им. В. А. Стеклова; Санкт-Петербургский государственный университет; Euler International Mathematical Institute; Российский фонд фундаментальных исследований
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17.

    Chiral optical Tamm states: temporal coupled-mode theory / I. V. Timofeev [et al.] // Crystals. - 2017. - Vol. 7, Is. 4. - Ст. 113, DOI 10.3390/cryst7040113. - Cited References:71. - This work was financially sponsored by the Ministry of Science and Technology (MOST), Taiwan, under Grant No. 106-2923-M-009-002-MY3, the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, the Krasnoyarsk Region Science and Technology Support Fund to the research project No. 17-42-240464, the Scholarship of the President of the Russian Federation No. SP-227.2016.5 and by the Siberian Branch of the Russian Academy of Sciences under Complex Program II.2P (Project Nos. 0356-2015-0410 and 0356-2015-0411). The authors are thankful to A.F. Sadreev, E.N. Bulgakov, N.V. Rudakova, Y.-C. Hsiao and L.V. Pertseva for valuable discussions and comments. . - ISSN 2073-4352
   Перевод заглавия: Хиральные оптические Таммовские состояния: теория временной связанной моды

РУБ Crystallography + Materials Science, Multidisciplinary
Рубрики:
CHOLESTERIC LIQUID-CRYSTAL
SCULPTURED THIN-FILMS
PHOTONIC DEFECT
Кл.слова (ненормированные):
optical Tamm state -- cholesteric liquid crystal -- handedness-preserving mirror
Аннотация: The chiral optical Tamm state (COTS) is a special localized state at the interface of a handedness-preserving mirror and a structurally chiral medium such as a cholesteric liquid crystal or a chiral sculptured thin film. The spectral behavior of COTS, observed as reflection resonances, is described by the temporal coupled-mode theory. Mode coupling is different for two circular light polarizations because COTS has a helical structure replicating that of the cholesteric. The mode coupling for co-handed circularly polarized light exponentially attenuates with the cholesteric layer thickness since the COTS frequency falls into the stop band. Cross-handed circularly polarized light freely goes through the cholesteric layer and can excite COTS when reflected from the handedness-preserving mirror. The coupling in this case is proportional to anisotropy of the cholesteric and theoretically only anisotropy in magnetic permittivity can ultimately cancel this coupling. These two couplings being equal result in a polarization crossover (the Kopp-Genack effect) for which a linear polarization is optimal to excite COTS. The corresponding cholesteric thickness and scattering matrix for COTS are generally described by simple expressions.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Lab Nonlinear Opt & Spect, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
Natl Chiao Tung Univ, Coll Photon, Inst Imaging & Biomed Photon, Tainan 71150, Taiwan.

Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Pankin, Pavel S.; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Lee, Wei; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Ministry of Science and Technology (MOST), Taiwan [106-2923-M-009-002-MY3]; Russian Foundation for Basic Research; Krasnoyarsk Region Science and Technology [17-42-240464]; Scholarship of the President of the Russian Federation [SP-227.2016.5]; Siberian Branch of the Russian Academy of Sciences [0356-2015-0410, 0356-2015-0411]; Government of Krasnoyarsk Territory
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18.

Cholesteric LC orientation in spherical capsules of LC composites containing pyrimidine additives / S. Ya. Vetrov, G. M. Zharkova, V. M. Khachaturyan [et al.] // Proceedings SPIE. - 1996. - Vol. 2731. - P. 186-190
Аннотация: The reflection spectra of cholesteric liquid crystals dispersed in polymer and comprising pyrimidine dopes are investigated in the entire temperature range of the mesophase existence. One or several oxyphenyl substituents in an ortho position implemented into a pyrimidine system induce the second reflection region. The reflection curves for different wavelengths corresponding to regions I and II merge with temperature. Thermodynamically equilibrium states of polymer-dispersed cholesterics under the influence of polar pyrimidine dopes are considered. The pyrimidine effect is modulated by the orientational near-surface potential. The existence of two space regions of a spherical droplet with different helix pitches is validated. The natural helix pitch is retained inside the droplet while a new pyrimidine-induced pitch is formed in a layer close to the droplet surface. The results obtained describe the existence of two reflection regions and the temperature behavior of the helix pitch.

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Доп.точки доступа:
Vetrov, S. Ya.; Ветров, Степан Яковлевич; Zharkova, G. M.; Khachaturyan, V. M.; Korets, A. Ya.; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Shabanov, V. F.; Шабанов, Василий Филиппович; International liquid crystal workshop on surface phenomena(1995 ; 21-23 June ; St. Petersburg)
}
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19.

Vetrov, S. Ya.
Control of absorption spectrum of a one-dimensional resonant photonic crystal / S. Ya. Vetrov, I. V. Timofeev, A. Yu. Avdeeva // Optics and Spectroscopy (English translation of Optika i Spektroskopiya). - 2010. - Vol. 109, Is. 1. - P. 106-111, DOI 10.1134/S0030400X10070179. - Cited References: 13 . - ISSN 0030-400X
Кл.слова (ненормированные):
Alternating layers -- Angle of Incidence -- Atomic gas -- Band-gap edge -- Brewster angle -- Combined system -- Gas pressures -- Highly sensitive -- Layered Structures -- P-polarized -- Photonic band-gap structures -- Resonance frequencies -- Resonant photonic crystals -- Transmission spectrums -- Two-materials -- Absorption spectroscopy -- Atomic spectroscopy -- Crystal atomic structure -- Dispersions -- Energy gap -- Gas absorption -- Light absorption -- Resonance -- Photonic crystals
Аннотация: The crystal under consideration is a layered structure consisting of alternating layers of two materials, one of which is a resonantly absorbing gas. It is shown that the combination of the dispersion of an atomic gas with the dispersion of a photonic-bandgap structures allows one to efficiently control the transmission spectra of s- and p-polarized modes in these combined systems. It is found that the spectrum is highly sensitive to the position of the gas resonance frequency with respect to the bandgap edge and to a change in the gas pressure. The transmission, reflection, and absorption spectra of the resonant photonic crystal are studied at an angle of incidence equal to the Brewster angle of a seed photonic crystal. Possible applications of the found particular features of the dispersion of resonant photonic crystals are discussed. В© 2010 Pleiades Publishing, Ltd.

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Держатели документа:
Siberian Federal University, Krasnoyarsk 660074, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Avdeeva, A. Y.; Ветров, Степан Яковлевич
}
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20.

Pyatnov, M. V.
Controlled photonic surface modes in 'cholesteric liquid crystal - Phase plate - Metal' structure / M. V. Pyatnov, S. Ya. Vetrov, I. V. Timofeev // Progress in Electromagnetics Research Symposium : Proceedings. - 2015. - Vol. 2015-January. - P. 224-227 . - ISBN 9781934142301
Кл.слова (ненормированные):
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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Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Progress In Electromagnetics Research Symposium(2015 ; July 6-9 ; Prague)
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