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    Belyaev, B. A.
    Analysis of the quality factor of the optical half-wavelength resonator / B. A. Belyaev, V. V. Tyurnev // Microwave Opt. Techn. Lett. - 2013. - Vol. 55, Is. 7. - P. 1613-1616DOI 10.1002/mop.27662
   Перевод заглавия: Анализ добротности оптического полуволнового резонатора
Аннотация: An electrodynamic analysis of an optical resonator comprising a half-wavelength dielectric layer that is covered from both sides by quarter-wavelength layers with higher and lower refractive indices (RIs) is carried out.For such a resonator, the dependences of the external quality factor on number and RIs of the layers are obtained first. That allows one to determine minimum number of the layers in the structure to achieve the required quality factor at practically any contrast of the RIs. The results of this study provide an easy way to optimize the structures of 1D photonic crystal devices, particularly high-selectivity bandpass filters.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk, Russia
Reshetnev Siberian State Aerosp Univ, Krasnoyarsk, Russia
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk, Russia

Доп.точки доступа:
Tyurnev, V. V.; Тюрнев, Владимир Вениаминович; Беляев, Борис Афанасьевич
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Quality of the rare earth aluminum borate crystals for laser applications, probed by high-resolution spectroscopy of the Yb3+ ion / K. N. Boldyrev [et al.] // Opt. Mater. - 2012. - Vol. 34, Is. 11. - P. 1885-1889, DOI 10.1016/j.optmat.2012.05.021. - Cited References: 20. - This work was supported by the Russian Academy of Sciences under the Programs for Basic Research, the Russian Foundation for Basic research under Grants No 10-02-01071-a and No 09-02-00171-a, and by the Ministry of Education and Science under Grant HIII-4828.2012.2. . - ISSN 0925-3467

РУБ Materials Science, Multidisciplinary + Optics
Рубрики:
GROWTH
   Y1-XYBXAL3(BO3)4
   LUMINESCENCE
   FREQUENCY
   CENTERS
Кл.слова (ненормированные):
Ytterbium -- Aluminum borates -- Impurities -- High-resolution spectroscopy -- UV edge
Аннотация: A comparative study was performed of the low-temperature high-resolution absorption spectra of the Yb3+ probe in R1−xYbxAl3(BO3)4 (R = Y, Tm, Lu) crystals grown by flux technique independently in four different laboratories using different solvents. We show that the incorporation of solvent components into the crystal in the course of crystallization gives rise to spectral satellites of the Yb3+ 0(2F7/2) → 0′(2F5/2) absorption lines and assign particular satellites to the Yb3+ centers near the bismuth and molybdenum impurities (which decrease the transparency of YAB in the UV spectral range). We suggest this spectroscopic method for a rapid analysis of the quality of UV laser crystals and for improvement of growth technologies.

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Держатели документа:
[Boldyrev, K. N.
Popova, M. N.] RAS, Inst Spect, Troitsk 142190, Moscow Region, Russia
[Bettinelli, M.] Univ Verona, Dept Biotechnol, I-37134 Verona, Italy
[Bettinelli, M.] UdR Verona, INSTM, I-37134 Verona, Italy
[Temerov, V. L.
Gudim, I. A.
Bezmaternykh, L. N.] RAS, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Loiseau, P.
Aka, G.] ENSCP, CNRS, LCMCP, UMR 7574, F-75005 Paris, France
[Leonyuk, N. I.] Moscow MV Lomonosov State Univ, Fac Geol, Moscow 119899, Russia

Доп.точки доступа:
Boldyrev, K. N.; Popova, M. N.; Bettinelli, M.; Temerov, V. L.; Темеров, Владислав Леонидович; Gudim, Irina A.; Гудим, Ирина Анатольевна; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Loiseau, P.; Aka, G.; Leonyuk, N. I.
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Elastic anharmonicity and elastic constants temperature dependences of different quality quartz crystals / B. P. Sorokin [et al.] // Proc Annu IEEE Int Freq Control Symp. - 2000. - P. 410-415 . - ISBN 0161-6404
Кл.слова (ненормированные):
Acoustic bulk wave devices -- Acoustic wave propagation -- Elastic moduli -- Pressure effects -- Quartz -- Thermal effects -- Crystal quality -- Elastic anharmonicity -- Mechanical pressure -- Second order elastic constant -- Temperature coefficients -- Crystal structure
Аннотация: SOEC temperature dependences of different quality quartz crystals were studied. The simplified phenomenological theory was applied to calculate second order elastic constant temperature dependences. The bulk acoustic waves propagation under the bias of temperature field or of the uniaxial mechanical pressure was considered. It was found that crystal quality changes have caused certain variations of some third order elastic constant values and some temperature coefficients.

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Доп.точки доступа:
Sorokin, B. P.; Glushkov, D. A.; Turchin, P. P.; Michailyuta, S. V.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Doubovsky, A. B.; IEEE Annual frequency control symposium(54 ; 2000 ; Jun. ; 7-9 ; Kansas)
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Морозов, Евгений Владимирович.
ЯМР-томография как инструмент исследования и диагностики композиционных материалов и изделий на их основе / Е. В. Морозов, И. В. Коптюг, В. М. Бузник // Авиационные материалы и технологии. - 2014. - № S1. - С. 17-29. - Библиогр.: 27 назв. . - ISSN 2071-9140
Кл.слова (ненормированные):
ЯМР-томография -- композиционные материалы -- массоперенос -- диагностика и контроль качества -- NMR-imaging -- composite materials -- mass transfer -- diagnostics and quality control
Аннотация: Представлен анализ применения метода ЯМР-томографии в области исследования и контроля композиционных материалов. Даны общие представления о методе, необходимые материаловедам для понимания его исследовательского потенциала. Показаны его возможности применительно к композиционным материалам и продемонстрированы примеры эффективного применения.

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Коптюг, И. В.; Бузник, Вячеслав Михайлович; Buznik, V. M.; Morozov, E. V.
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Бузник, Вячеслав Михайлович.
Применение ядерного магнитного резонанса для задач авиационного материаловедения / В. М. Бузник, О. В. Фалалеев // Авиационные материалы и технологии. - 2014. - № S1. - С. 5-6. - Библиогр.: 24 назв. . - ISSN 2071-9140
Кл.слова (ненормированные):
ЯМР-томография -- ЯМР -- композиционные материалы -- авиационные материалы -- диагностика и контроль качества -- NMR-imaging -- composite materials -- diagnostics and quality control
Аннотация: Проведен анализ применимости методов ядерного магнитного резонанса (ЯМР) к изучению строения материалов и изделий, используемых в авиакосмической технике. Рассмотрены принципиальные возможности различных методик, включая магниторезонансную томографию, и представлены конкретные примеры использования ЯМР при изучении авиационных материалов, выделены группы авиационных материалов, перспективных для исследования.

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Фалалеев, Олег Владимирович; Falaleev, O.V.; Buznik V. M.
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Novel high-quality compact microstrip resonator and its application to bandpass filter / B. A. Belyaev [et al.] // IEEE Microw. Wirel. Compon. Lett. - 2015. - Vol. 25, Is. 9. - P. 579-581, DOI 10.1109/LMWC.2015.2451363. - Cited References: 13. - This work was supported by the Ministry of Education and Science of the Russian Federation under State contract 14.607.21.0039. . - ISSN 1531-1309

РУБ Engineering, Electrical & Electronic

Кл.слова (ненормированные):
Bandpass filter (BPF) -- interdigital resonator -- microstrip -- microstrip resonator
Аннотация: A novel compact microstrip resonator based on interdigital structure is proposed. The resonator has several times higher quality factor than similar resonators presented earlier. It is shown that the size of the resonator can be significantly reduced with substantial increase in quality factor by incrementing the number of pins in the interdigital structure. A 4-pole bandpass filter with central frequency 900 MHz and an overall size 4.6 mm × 10.0 mm was designed and fabricated on the base of the proposed structure. The measured upper stopband of the filter was found to be up to 7.4fo at the level -40 dB.

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Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Serzhantov, A. M.; Сержантов, Алексей Михайлович; Leksikov, Al. A.; Лексиков, Александр Александрович; Bal'va, Y. F.; Бальва, Ярослав Федорович; Leksikov, An. A.; Лексиков, Андрей Александрович
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Multifunctional RFe3(BO3)4 materials: Quality control / K. N. Boldyrev [et al.] ; ed. V. V. Samartsev [et al.] // EPJ Web of Conf. - 2015. - Vol. 103. - Ст. 09001, DOI 10.1051/epjconf/201510309001. - Cited References: 3. - This work was supported by the Russian Science Foundation (Grant № 14-12-01033) . - ISSN 2100-014X

РУБ Optics of Crystals + Optical Materials

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Доп.точки доступа:
Samartsev, V. V. \ed.\; Vinogradov, E.A. \ed.\; Naumov, A.V. \ed.\; Karimullin, K.R. \ed.\; Boldyrev, K. N.; Popova, M. N.; Molchanova, A. D.; Stanislavchuk, T. N.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; International Workshop on Quantum Optics(12th ; Moscow)(Aug 11-16, 2015)
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Morozov, E. V.
MRI monitoring and non-destructive quality measurement of polymeric patterns manufactured via stereolithography / E. V. Morozov, M. M. Novikov, V. M. Bouznik // Addit. Manuf. - 2016. - Vol. 12. - P. 16-24, DOI 10.1016/j.addma.2016.05.015 . - ISSN 2214-8604
Кл.слова (ненормированные):
Aging -- Build parameters -- MRI -- Polymers -- Stereolithography
Аннотация: The use of Magnetic Resonance Imaging (MRI) for monitoring, studying and performing output quality measurements of the acrylate-based polymeric patterns manufactured using stereolithography (SL) was introduced in this work. The effects of build parameters and humid environment on sample homogeneity, distribution of crosslink density, stability and defect formation were examined. The spatial resolution of the method was found to be sufficient to identify patterns according to the build parameters used and to detect specific hatch-predicted crosslink density variations. Qualitative information obtained using MRI visualisation was supplemented by quantitative measurements of Nuclear Magnetic Resonance (NMR) relaxation times and 1H NMR spectra. NMR spectroscopy confirmed the identity of the chemical composition among the patterns and showed that the crosslink density variation observed via spatially resolved T2-profiles stems from the difference of the build parameters. Different types of defects in the samples were observed and classified; some defects originated from local matrix continuity failures (partially cured resin trapping within the polymer or bubbles formation), while other defects were found in the form of bulk layering. MRI visualisation coupled with relaxometry and 1H spectroscopy of patterns during their interaction with humidity allowed tracking water distribution inside the sample and observing effects of swelling, fracturing and chemical decomposition. It was found that the initial inhomogeneous structure of the specimen has a crucial role in subsequent fracturing due to non-uniform expansion of the swollen parts. As a result, the approach presented in this work improves the output quality control and current testing techniques, provides insight how physical properties of the 3D parts are affected by different technical parameters, and eventually can help the use of SL technologies for a variety of applications. © 2016 Elsevier B.V.

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Держатели документа:
Kirensky Institute of Physics SB RAS, Krasnoyarsk, Russian Federation
Institute of Chemistry and Chemical Technology SB RAS, Krasnoyarsk, Russian Federation
Institute on Laser and Information Technologies RAS, Shatura, Russian Federation
All-Russian Scientific Research Institute of Aviation Materials, Moscow, Russian Federation

Доп.точки доступа:
Novikov, M. M.; Bouznik, V. M.; Морозов, Евгений Владимирович
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High-quality compact interdigital microstrip resonator and its application to bandpass filter / B. Belyaev [et al.] // Prog. Electromagn. Res. C : Proceedings. - 2017. - Vol. 72. - P. 91-103. - Cited References: 27 . - ISSN 1937-8718
Кл.слова (ненормированные):
Alumina -- Bandpass filters -- Bandwidth -- Microwave filters -- Q factor measurement -- Resonators -- Alumina substrates -- Central frequency -- Fractional bandwidths -- Interdigital structures -- ITS applications -- Microstrip resonator -- Number of fingers -- Unloaded quality factors -- Microstrip filters
Аннотация: A compact microstrip resonator based on the interdigital structure is proposed. The resonator has several times higher unloaded quality factor compared to similar resonators presented previously and can even reach the Q-factor of a regular λ/4 resonator. The size of the resonator can be significantly reduced with a substantial increase in quality factor by incrementing the number of fingers in the interdigital structure. In addition, for each gap between the fingers, there exist an optimal number of fingers that correspond to the maximum Q-factor. An extension of the upper stopband for a bandpass filter designed using the resonator can be achieved by the interconnection of the fingers in each of the comb structures. The simulation results are proven by fabricated resonators and a fourpole bandpass filter. For the central frequency of 2000 MHz and 16.2% fractional bandwidth, the lateral size of the filter is only 11.5mm × 3.8 mm for alumina substrate (eps = 9.8). The filter has an upper stopband up to 5.8f0 at the level −40 dB.

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

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Serzhantov, A.; Leksikov, Al. A.; Лексиков, Александр Александрович; Bal'va, Y. F.; Бальва, Ярослав Федорович; Leksikov, An. A.; Лексиков, Андрей Александрович
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10.

Belyaev, B. A.
An X-band magnetically tunable bandpass filter based on novel waveguide cavity resonator / B. A. Belayev, K. V. Lemberg, A. M. Serzhantov // Asia-Pacific Microwave Conference Proceedings, APMC 2016 : Institute of Electrical and Electronics Engineers Inc., 2017, DOI 10.1109/APMC.2016.7931355. - Cited References: 12
Кл.слова (ненормированные):
Bandpass filters -- Cavity resonators -- Waveguides -- Operating modes -- Relative bandwidth -- Tunable band-pass filters -- Tunable frequency -- Tunable wave-guides -- Two-pole filters -- Unloaded quality factors -- Waveguide cavity resonators -- Waveguide filters
Аннотация: This paper presents a ferrite tunable waveguide filter showing high Qu and high tunability in X-band. A new type of waveguide cavity resonator with an H102 operating mode was proposed for the creation of a low-loss, two-pole filter. The filter results in an insertion loss of 3.6-4.1 dB over the tuning range 8.74-9.63 GHz with a relative bandwidth of 0.92-0.79% and biasing magnetic field 0-600 Oe. This design demonstrates an unloaded quality factor of 380-396 over the tunable frequency range. © 2016 IEEE.

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Доп.точки доступа:
Lemberg, K. V.; Serzhantov, A. M.; Сержантов, Алексей Михайлович; Беляев, Борис Афанасьевич; Asia-Pacific Microwave Conference(2016 ; Dec. ; New Delhi)
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