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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Tyurnev V. V.
Заглавие : Analysis of the quality factor of the optical half-wavelength resonator
Место публикации : Microwave Opt. Techn. Lett. - 2013. - Vol. 55, Is. 7. - P.1613-1616. - DOI 10.1002/mop.27662
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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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : ZINENKO V. I., FEDOROV A. S.
Заглавие : CALCULATION OF LONG-WAVELENGTH PHONON FREQUENCIES, OF DIELECTRIC PERMITTIVITY, AND B1-B2 PHASE-TRANSITIONS IN ALKALI-METAL HYDRIDES BY THE DENSITY-FUNCTIONAL TECHNIQUE
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1994. - Vol. 36, Is. 5. - P1357-1365. - ISSN 0367-3294
Примечания : Cited References: 17
Предметные рубрики: PRESSURE
ENERGY
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Drokin N. A., Shabanov V. F.
Заглавие : Dielectric and optical properties of a 5-propyl-2-(p-cyanophenyl)-pyridine liquid crystal
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2003. - Vol. 45, Is. 4. - P797-801. - ISSN 1063-7834, DOI 10.1134/1.1569024
Примечания : Cited References: 12
Предметные рубрики: DECIMETER WAVELENGTH RANGE
SERIES
SPECTRA
5CB
Аннотация: The temperature dependences of the dielectric and optical parameters for a 5-propyl-2-(p-cyanophenyl)-pyridine (3CP) liquid crystal are investigated in the vicinity of the nematic-isotropic phase transition. The dielectric spectra of the 3CP compound in the crystalline, nematic, and isotropic phases are measured in the frequency range 1-1000 MHz, and the Debye approximations of the measured spectra are obtained. Analysis of the dependence of the static permittivity on the director orientation with respect to the direction of the electric pump field demonstrates that the angle between the dipole moment and the long axis of the molecule is approximately equal to 15degrees. (C) 2003 MAIK "Nauka / Interperiodica".
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Drokin N. A., Shabanov V. F., Shepov V. N.
Заглавие : Dielectric anisotropy of 5CB liquid crystal in a decimeter wavelength range
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2000. - Vol. 42, Is. 3. - P577-579. - ISSN 1063-7834, DOI 10.1134/1.1131251
Примечания : Cited References: 7
Аннотация: Parallel and perpendicular components of the dielectric constant for 5CB nematic liquid crystal are measured in a relaxation region. Two frequencies f(1) approximate to 30 and f(2) approximate to 350 MHz are determined at which the inversion of the dielectric anisotropy sign is observed. It is shown that the observed sizable high-frequency shift of f(2) with respect to the value calculated according the Debye theory is caused by the dielectric resonance near the relaxation region. (C) 2000 MAIK "Nauka/Interperiodica".
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vyunishev A. M., Myslivets S. A., Fokin V. A., Volochaev M. N., Smolyarova T. E., Radionov N. V., Zaitsev A. I., Arkhipkin V. G., Chirkin A. S.
Заглавие : Dual wavelength Talbot self-imaging using facet patterned nonlinear crystals
Коллективы : Russian Science Foundation (RSF) [19-12-00203]
Место публикации : Opt. Lett. - 2019. - Vol. 44, Is. 15. - P.3761-3764. - ISSN 0146-9592, DOI 10.1364/OL.44.003761. - ISSN 1539-4794(eISSN)
Примечания : Cited References: 19. - Russian Science Foundation (RSF) (19-12-00203).
Предметные рубрики: RAMAN-NATH DIFFRACTION
LITHOGRAPHY
FIELD
Аннотация: A method for functional patterning of facets of a nonlinear crystal using focused ion beam milling has been developed. The near-field diffraction on periodic gratings has been experimentally and theoretically studied. The periodicity of the structure enables Talbot self-imaging at the fundamental and second-harmonic frequencies simultaneously. Spatial interference patterns for both harmonic frequencies are individual ones, which can enable the higher-accuracy optical testing, coupling the radiation at both frequencies, and wavelength-division demultiplexing. The impact of the aperture effect on a Talbot carpet is discussed.
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Korshunov M. A., Shabanov A. V., Bukhanov E. R., Shabanov V. F.
Заглавие : Effect of long-period ordering of the structure of a plant on the initial stages of photosynthesis
Место публикации : Dokl. Phys. - 2018. - Vol. 63, Is. 1. - P.1-4. - ISSN 10283358 (ISSN), DOI 10.1134/S1028335818010068
Примечания : Cited References: 15
Ключевые слова (''Своб.индексиров.''): electromagnetic fields--plants (botany)--density of photonic state--long wavelength--photosystems--plant leaves--soft modes--stopband--two bands--water dissociation--transfer matrix method
Аннотация: Using data on the structure of plant leaves, specific features of light propagation in biophotoniccrystal structures have been established by the transfer matrix method. Splitting of the stopband in two bands has been found. The density of photonic states and the electromagnetic field value have been calculated. The occurrence of two photosystems (splitting of the stopband in two bands), the peculiarity of the long-wavelength quantum yield and its enhancement (Emerson effect), and water dissociation in the soft mode due to an increase in the electromagnetic field on the layers are explained.
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7.

Вид документа : Статья из сборника (выпуск монографической серии)
Шифр издания :
Автор(ы) : Govorun I. V., Leksikov A. A., Serzhantov A. M.
Заглавие : Features of the coupling coefficients of microstrip irregular quarter-wavelength resonators
Коллективы : International Scientific-Technical Conference on Actual Problems of Electronic Instrument Engineering
Место публикации : 13th International Scientific-Technical Conference on Actual Problems of Electronic Instrument Engineering (APEIE): IEEE, 2017. - Vol. 4. - P.29-32. - (International Conference on Actual Problems of Electronic Instrument)
Примечания : Cited References:9
Предметные рубрики: HAIRPIN RESONATORS
Ключевые слова (''Своб.индексиров.''): microstrip resonator--coupling coefficient--inductive and capacitive--interactions--damping pole
Аннотация: In the present work on the base of modified energy approach a behavior of the frequency-dependent coupling coefficient of pair microstrip stepped-impedance quarter-wavelength resonators was investigated. It is revealed that at a certain gap between the resonators the total coefficient of coupling becomes zero due to mutual compensation of coefficients describing inductive and capacitive interactions between the resonators.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Trabs P., Noack F., Aleksandrovsky A. S., Zaitsev A. I., Petrov V.
Заглавие : Generation of coherent vacuum UV radiation in randomly quasi-phase-matched strontium tetraborate
Коллективы : Conference on Lasers and Electro-Optics
Место публикации : Conference on Lasers and Electro-Optics Europe - Technical Digest: IEEE-Institute Electrical and Electronics Engineers, 2015. - Vol. 2015-August. - ISSN 9781557529688 (ISBN)
Ключевые слова (''Своб.индексиров.''): crystals--frequency conversion--harmonic analysis--nonlinear optics--optical harmonic generation--optical pulses--wavelength measurement
Аннотация: Tunable coherent radiation is generated in the VUV down to 121 nm using random quasi-phase-matching in strontium tetraborate, the shortest wavelength ever produced with a second-order nonlinear optical process in a solid-state material. © 2015 OSA.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Drokin N. A., Shabanov V. F., Shepov V. N.
Заглавие : High-frequency dielectric spectra from liquid crystals of series nCB and nOCB
Место публикации : Tech. Phys.: AMER INST PHYSICS, 2002. - Vol. 47, Is. 4. - P470-473. - ISSN 1063-7842, DOI 10.1134/1.1470597
Примечания : Cited References: 8
Предметные рубрики: DECIMETER WAVELENGTH RANGE
RELAXATION
SPECTROSCOPY
PHASES
Аннотация: The design of a resonant frequency-tunable high-sensitivity microstrip sensor is suggested. The permittivity dispersion of liquid crystals of two homologic series, alkylcyanobiphenyls (7CB and 8CB) and alkyloxycyanobiphenyls (7OCB and 8OCB), is studied at frequencies of 100-900 MHz. The dielectric spectra are shown to be the sum of the Debye relaxation and dielectric resonances observed at f approximate to 160, 280, 360, 450, 550, and 650 MHz. The dielectric resonances are present in the spectra of all the samples in both the nematic and isotropic phase. The substitution of an oxygen atom (series nOCB) for a carbon atom (series nCB) in liquid crystal molecules has a minor effect on the dielectric resonance frequencies but changes the resonance intensities and splits some of the resonance lines. (C) 2002 MAIK "Nauka / Interperiodica".
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tsipotan A. S., Gerasimova M. A., Slabko V. V., Aleksandrovsky A. S.
Заглавие : Laser-induced wavelength-controlled self-assembly of colloidal quasi-resonant quantum dots
Коллективы : Grant of Ministry of Education and Science of the Russian Federation [3.1749.2014/K, 214/71]; RFBR [14-02-00219 A]
Место публикации : Opt. Express: Optical Society of America, 2016. - Vol. 24, Is. 10. - P.11145-11150. - ISSN 1094-4087, DOI 10.1364/OE.24.011145
Примечания : Cited References:18. - This research is partially supported by Grant of the Ministry of Education and Science of the Russian Federation for Siberian Federal University (projects No 3.1749.2014/K, 214/71) and RFBR, research project No. 14-02-00219 A.
Предметные рубрики: Organized aggregation
Metal nanoparticles
Optical binding
Dynamics
Field
Аннотация: Self-assembly of colloidal semiconductor quantum dots controlled solely by laser-induced interaction is demonstrated for the first time. Pairs of CdTe nanoparticles are formed under irradiation with nanosecond pulses at wavelengths 555 or 560 nm. Formation of pairs is justified by corresponding changes of absorption spectra. Conditions of the experiment are in excellent agreement with those predicted by the theory of laser-induced dipole-dipole interaction of QDs. The fraction of QDs assembled into pairs is up to 47%. (C) 2016 Optical Society of America
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