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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Burkov S. I., Sorokin B. P., Karpovich A. A., Aleksandrov K. S.
Заглавие : The influence of static homogeneous fields on the properties of saw in piezoelectrics
Место публикации : Ferroelectr. Lett. Sect. - 1992. - Vol. 14, Is. 5-6. - P.99-113. - ISSN 0731-5171, DOI 10.1080/07315179208203349
Примечания : Cited References: 11
Предметные рубрики: WAVES
Аннотация: Propagation of surface acoustic waves (SAW) in piezoelectric media deformed by the homogeneous static electric field E/homogeneous mechanical stress P has been considered. Green-Christoffel equations, boundary conditions and other necessary derivations have been obtained. The computer investigations Of anisotropy Of E(P) influence on the SAW propagation conditions in piezoelectrics Bi12SiO20 and Bi12GeO20 have been carried out.
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2.

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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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gavrilyuk S. A., Krasnov I. V., Polyutov S. P.
Заглавие : Three-dimensional interference effects in the mechanical action of weak biharmonic fields upon particles with the J=0 - J=1 quantum transition
Место публикации : J. Exp. Theor. Phys.: AMER INST PHYSICS, 2001. - Vol. 93, Is. 5. - P985-997. - ISSN 1063-7761, DOI 10.1134/1.1427110
Примечания : Cited References: 29
Предметные рубрики: ATOM TRAP
FORCE
PRESSURE
PLASMA
WAVES
Аннотация: Explicit expressions are derived for the rectified radiative forces (RRFs) related to the action of a weak interfering optical field of an arbitrary three-dimensional (3D) configuration upon resonance particles featuring the J = 0 -- J = 1 quantum transition. It is shown that, in contrast to the case of a monochromatic field, there are simple 3D biharmonic field configurations for which the ratio of the vortex and potential RRF components can be controlled by adjusting frequencies and polarizations of the interfering light waves. This modification of the RRF structure gives rise to qualitatively different types of both vortex and potential light-induced particle motions that may lead to a 3D spatial localization (confinement) of these particles within the cells of an effective optical lattice with a period significantly greater than the light wavelength. In particular, the particles may perform a stable rotational motion along closed trajectories inside the elementary cells. (C) 2001 MAIK "Nauka/Interperiodica".
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sadreev A. F.
Заглавие : Enhancement of Rayleigh scattering in a two-dimensional Fabry-Perot resonator loaded with impurities
Коллективы : Russian Science Foundation (RSF) [14-12-00266]
Место публикации : J. Opt. Soc. Am. A: Optical Society of America, 2016. - Vol. 33, Is. 7. - P.1277-1282. - ISSN 1084-7529, DOI 10.1364/JOSAA.33.001277. - ISSN 1520-8532(eISSN)
Примечания : Cited References:32. - Russian Science Foundation (RSF) (14-12-00266)
Предметные рубрики: COUPLED-MODE THEORY
MULTIPLE-SCATTERING
NUCLEAR REACTIONS
UNIFIED THEORY
RANDOM-MEDIA
TRANSMISSION
PARTICLES
WAVES
LIGHT
STRIP
Аннотация: We study wave transmission through a Fabry-Perot resonator (FPR) loaded with point-like impurities. We show both analytically in the framework of the coupled mode theory and numerically that there are two different regimes for transmission dependent on the quality of the FPR mirrors. For low quality, we obtain transmittance very similar to the clean FPR with slightly shifted Lorentz peaks. However, for good quality, the transmittance peaks are strongly reduced and substituted with Gaussian peaks because of multiple scattering of waves by each impurity. As a side effect, we observe the angular (channel) conversion in the disordered FPR. We demonstrate that the resonant peaks are dependent on the concentration of impurities to pave a way for resonant measurement of the concentration. (C) 2016 Optical Society of America
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bulgakov E. N., Sadreev A. F.
Заглавие : Nearly bound states in the radiation continuum in a circular array of dielectric rods
Коллективы : Ministry of Education and Science of the Russian Federation [3.1845.2017]; RFBR [16-02-00314, 17-52-45072]
Место публикации : Phys. Rev. A. - 2018. - Vol. 97, Is. 3. - Ст.033834. - ISSN 2469-9926, DOI 10.1103/PhysRevA.97.033834. - ISSN 2469-9934(eISSN)
Примечания : Cited References:35. - We acknowledge discussions with Andrey Bogdanov and Dmittrii Maksimov. This work was partially supported by the Ministry of Education and Science of the Russian Federation (State Contract No. 3.1845.2017) and RFBR Grants No. 16-02-00314 and No. 17-52-45072.
Предметные рубрики: WAVES
LIGHT
CYLINDERS
RESONANCE
Аннотация: We consider E-polarized bound states in the radiation continuum (BICs) in circular periodical arrays of N infinitely long dielectric rods. We find that each true BIC which occurs in an infinite linear array has its counterpart in the circular array as a near-BIC with extremely large quality factor. We argue analytically as well as numerically that the quality factor of the symmetry-protected near-BICs diverges as eλN, where λ is a material parameter dependent on the radius and the refraction index of the rods. By tuning of the radius of rods, we also find numerically non-symmetry-protected near-BICs. These near-BICs are localized with exponential accuracy outside the circular array, but fill the whole inner space of the array carrying orbital angular momentum.
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aplesnin S. S., Sitnikov, Maxim, Romanova O. B., Kharkov, Anton, Begisheva, Olga, Zelenov, Fyodor
Заглавие : Electrosound and asymmetry of the I-V characteristic induced by ultrasound in the RexMn1-xS (Re = Tm, Yb)
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Belarussian Republic Foundation for Basic Research [20-52-00005]
Место публикации : Eur. Phys. J. Plus. - 2022. - Vol. 137, Is. 2. - Ст.226. - ISSN 2190-5444, DOI 10.1140/epjp/s13360-022-02432-0
Примечания : Cited References: 46. - This study was supported by the Russian Foundation for Basic Research and the Belarussian Republic Foundation for Basic Research (Project No. 20-52-00005). The investigation ofmicrostructural properties of the sampleswas carried out using equipment's (SEM and TEM) the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center " Krasnoyarsk Science Center SB RAS". The authors are grateful to A.V. Shabanov, senior researcher of the Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics, for the scanning electron microscopy investigations
Предметные рубрики: ACOUSTIC CHARGE-TRANSPORT
WAVES
SEMICONDUCTOR
ATTENUATION
Аннотация: A correlation between the temperatures corresponding to the maxima of the sound attenuation and temperature resistance coefficient in the RexMn1-xS solid solutions related to the condensation of electrons and holes has been established. X-ray diffraction, energy-dispersive X-ray spectrum, and scanning electron microscope techniques have been used to investigate the microstructure of the samples. In the Yb0.2Mn0.8S compound, a decrease in the ultrasound attenuation with increasing temperature has been observed. The functional dependences of the electrosound on the ultrasound intensity and carrier type and the change in the electrosound sign with temperature have been established. The asymmetry of the I-V characteristic depending on the ultrasound intensity and the attenuation coefficient depending on the electric field has been found. The nonlinear attenuation of the ultrasound as a function of the intensity has been observed. Model of elastic and inelastic scattering of current carriers by acoustic phonons, deformation interaction is used to explain the asymmetry.
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