2016 / 5
conference materials
R e g u l a r p a p e r s
Metamaterials, photonic crystals and nanostructures
V.A. Maksimenko$^1$, V. V. Makarov$^1$, A. A. Koronovskii$^2$, A. E. Hramov$^1$, K.N. Alekseev$^3$, A. G. Balanov$^3$
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In this paper we propose the semiconductor sandwich heterostructure for the improving of the properties of domain generation.
Within the numerical study of the collective dynamics of charge we demonstrate the possibility of a simultaneous increase in
the frequency and power of the current oscillations, caused by the travelling domains, due to the synchronization of the domain
dynamics in the different parts of the considered semiconductor sample. Hide Abstract
S. Ya. Vetrov$^{1,2}$, P. S. Pankin$^{1,2}$, I.V. Timofeev$^{1,2}$,
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The optical Tamm states localized at both edges of a one–dimensional photonic crystal encloused by a nanocomposite are
investigated. The nanocomposite consists of spherical nanoparticles with a dielectric core and a metal shell, which are dispersed in
a transparent matrix. It is shown that the position of the spectral peaks is sensitive to the thickness of the outermost layer of the
photonic crystal. Hide Abstract
V.G. Arkhipkin$^1$, S. A. Myslivets$^1$, P. S. Pankin$^2$
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Theoretically studied propagation of a weak light pulse in electromagnetically induced grating (EIG) in the presence of an
additional control field in four-level atoms of N-type. It is shown that one can effectively control the reflection and transmission of
EIG. All–optical switching of the reflected and transmitted pulse is demonstrated. Hide Abstract
K.V. Dmitriev
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The example of a mechanical system which behaves like a double negative medium within a certain frequency band is suggested.
The analytical expressions for the frequency dependence of its effective density and compressibility are derived. The results of numerical simulations in the two–dimensional case of an impulse propagating through the layer made of the considered medium are presented. The presence of negative refraction is shown while the causality principle is satisfied. Hide Abstract
Nanophotonics and plasmonics
P. V. Badikova, S. Yu. Glazov
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The expression for the longitudinal part of the dielectric function non-degenerate electron gas in bilayer grapheme is obtained.
In the calculations used low–energy approximation for the electron spectrum. The dispersion relation and the damping rate of the
plasma waves in bilayer graphene is found. Hide Abstract
D.O. Ignatyeva
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We propose a method of optical activity measurement based on the detection of the eigen polarization variations associated with
the changes of optical activity of the analyzed medium. Hide Abstract
D.O. Ignatyeva$^{1,2}$, A.N. Kalish$^{1,2}$, A.K. Zvezdin$^{3}$, V. I. Belotelov$^{1,2}$
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Properties of surface plasmon–polaritons excited in two and three-layered structures containing topological insulators with axion
effect were investigated. The plasmon polarization rotation was revealed and the conditions for the polarization effects enhancement
were found. Hide Abstract
Coherent and nonlinear optics
R.M. Arkhipov$^{1,2}$, M.V. Arkhipov$^{2}$, I. Babushkin$^{3,4}$, N.N. Rosanov$^{1,5}$
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In this paper, we consider theoretically some examples of nonlinear photonics devices based on the coherent interaction of light
with matter. The examples of these devices are lasers that generate extremely short single–cycle optical pulses based on so–called
self–induced transparency coherent passive mode-locking (or coherent mode–locking), ultrafast laser beam deflector, and unipolar
pulse generator. Such devices have several advantages compared to standard devices that operate in the regime when the interaction
of light with matter is incoherent. Hide Abstract
V. V. Bliznyuk$^1$, N.V. Berezovskaya$^1$, M.A. Brit$^1$, O. I. Koval$^1$, V. A. Parshin$^1$, A. G. Rzhanov$^2$
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The possibility of the diode laser far field radiation diagram quantitative analysis without carrying out time–consuming and
expensive measurements of the intensity distribution in the near zone is shown. Hide Abstract
V. V. Bliznyuk$^1$, N.V. Berezovskaya$^1$, M.A. Brit$^1$, O. I. Koval$^1$, V. A. Parshin$^1$, A. G. Rzhanov$^2$
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The radiation pattern and the degree of light polarization for high–power laser diodes in up–threshold mode have been measured.
Time dependence of the radiations power and a degree of polarization have been investigated. The possibility of 2 W CW laser
diode based on InGaAs/GaAs–heterostructures lifetime predicting by preliminary measurements of space-energy and polarization
characteristics of radiation discusses. Hide Abstract
V. V. Bliznyuk$^1$, N.V. Berezovskaya$^1$, M.A. Brit$^1$, O. I. Koval$^1$, V. A. Parshin$^1$, A. G. Rzhanov$^2$
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The method of determining the generation regime of the diode laser based the far field measurements at a fundamental mode
considered. The implementation of the method for measurements of divergence angle in the two dimensional far field using the
coordinates of the Gaussian function characteristic points discussed. Hide Abstract
E.N. Galkina$^{1,2}$, M.B. Belonenko$^{2,3}$
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Behavioral features of two-dimensional few cycle optical pulses propagating in array of carbon nanotubes in the presence of
external constant magnetic field, applied perpendicular to the axis of nanotubes, are analyzed and presented. Hide Abstract
A.O. Semkin, S.N. Sharangovich
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In this paper the three dimensional theoretical model of holographic diffraction structures formation in photopolymer-liquid
crystalline compositions is developed. The model takes into account the material optical properties anisotropy, amplitude and
phase inhomogeneity of structure and nonlinearity of recording process. On the base of numerical simulations the complicated
spatiotemporal dependence of amplitude profiles of higher spatial harmonics of refraction index is shown. Hide Abstract
A. S. Perin, V. Y. Ryabchenok, E.A. Dmitriev, V. A. Kradko, S. B. Kozlov, E.A. Berezina, V.M. Shandarov
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Formation of one-dimensional planar waveguides and couples of such waveguides within a bulk of undoped lithium niobate has
been experimentally demonstarated. Waveguide structures with a channel size of 22 μm have been formed by the bright spatial
solitons obtained at the compensation of the diffraction divergence of light beams in the crystal due to the contribution of the
pyroelectric effect into the nonlinear response. The light wavelength was 532 nm and the optical power was ranged from 0.5mW
to 1mW in experiments. The total compensation of the diffraction divergence at uniform heating of the crystal sample to the
temperature from 75 ◦C. Hide Abstract
A.D. Bezpaly, A.O. Verkhoturov, V.M. Shandarov
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The optical induction of waveguide and diffraction elements in lithium niobate samples with surface doping by photorefractive
impurities is experimentally investigated in the research. The spatial distribution of refractive index inhomogeneities in the exposed
areas of crystal wafer surface has been visualized using the light diffraction method. Channel waveguide elements are formed by
point-by-point exposure of sample’s surface method. And the one-dimensional diffraction gratings are created by the sample surface
exposure with laser radiation through the amplitude mask. Hide Abstract
A.N. Bugai$^1$, V. A. Khalyapin$^{2,3}$
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The system of the equations describing dynamics of parameters of the super-Gaussian pulse propagating in isotropic dielectric
as in the field of normal, and abnormal dispersion of group speed is received. Hide Abstract
A.M. Vyunishev$^{1,2}$, I.V. Timofeev$^{1,2}$, A.S. Chirkin$^{3}$
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The second optical harmonic generation in quadratic nonlinear crystal structure is theoretically investigated. The structure
consists of regularly modulated inhomogeneous layers that are divided by homogeneous layers of random thickness. The dependence
of the process efficiency on the layer number and dispersion of the layer thickness is determined. Hide Abstract
Spectroscopy and imaging
N.V. Anisimov$^1$, M.V. Gulyev$^1$, O. S. Pavlova$^1$, D. V. Volkov$^2$, D.V. Fomina$^3$, S. S. Batova$^4$, Yu.A. Pirogov$^4$
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It is considered a method optimizing parameters of MRI scanning pulse sequence of gradient echo type, based on calculating a
spin system response in different variants of its selective excitation. Hide Abstract
A.S. Machikhin$^1$, V.I. Batshev$^{1,2}$, V.E. Pozhar$^{1,3}$, M.M. Mazur$^{4}$
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An acousto–optic spectral imaging device is designed to obtain stereoscopic images on arbitrary wavelengths within the visible
range. Spectrometer is based on the simultaneous spectral filtration of two light beams carrying the image of the object from two
different angles. The layout of spectrometer is manufactured. Examples of stereo images are presented. Hide Abstract
D. V. Volkov$^1$, M.V. Gulyaev$^2$, O. S. Pavlova$^2$, N.V. Anisimov$^2$, Yu.A. Pirogov$^3$
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By exciting different parts of $^{19}$F–NMR–spectrum of Perftoranum $^{R}$ and experimentally the spectral range, which gives the maximum NMR–signal, was determined. It was shown that the preferable scanning method is pulse sequence RARE. Hide Abstract
V. V. Grubov$^{1,2}$, E. Yu. Sitnikova$^{3}$, M.K. Kurovskaya$^{2}$, A. A. Koronovskii$^{2}$, A. E. Hramov$^{1,2}$
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Problem of automated EEG signal analysis and extraction of normal and proepilptic activity was studied. Method based on
wavelet analysis and empirical mode decomposition was proposed. Analysis of experimental EEG signals was performed, proposed
method allows to detect and distinguish basic types of patterns. Hide Abstract
Yu.A. Pirogov
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Magnetic resonance imaging and local NMR spectroscopy with adjusting on Larmor frequencies of nuclei different from protons
namely deuterium, fluorine, carbon, phosphorus, sodium, chlorine are considered. Hide Abstract
R.A. Zhostkov$^1$, D. A. Presnov$^1$, A. S. Shuruп$^{1,2}$, A.L. Sobisevich$^1$
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Methods using data of surface waves are very effective for study of structure of the upper strata of the Earth, which is the
most non-uniform. There are a number of such methods, originally developed for use on land, among which we should highlight
microseismic sounding method (MSM) and ambient noise tomography (ANT). Unlike other methods of depth sounding MSM and
ANT are easier to practical implementation, cheaper and could be performed with minimal restrictions on the environmental side of
the experiment, because they don’t have harmful effects on the environment. However, these techniques were used mainly on land
before. In this paper, a comparison of these two approaches based on experimental data from a network of bottom seismic stations
located in the area of the Hawaiian Islands. The results of microseismic sounding derived according to the bottom stations, as well
as a comparative analysis of those results with tomographic estimates of parameters of the medium obtained in the present work
for the first time. These results indicate that the methods of Earth sounding based on an analysis of the characteristics of surface
waves can lead to satisfactory results, not only when they are used on land, but even in marine conditions. Hide Abstract
M. A. Choba, V. A. Safonov, Yu. K. Aleshin
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The kinetics of peroxodisulfate anions electroreduction on the mechanically updated silver electrode was investigated by the
impedance method. It is established, that impedance diagrams of the negative charged area on the metal surface could be
successfully replaced by equivalent circuit which consists from the solution resistance and reaction resistance in parallel connection
with constant phase shift element replacing the capacity of double electrical layer. The experimental data analysis, carried out
within the framework of represented equivalent circuit, let us conclude, that kinetics of anions S$_2$O$_8^{2−}$ reduction reaction on the
researched electrode is adequately described in terms of the phenomenological theory of slow discharge. Hide Abstract
K.A. Magaryan$^1$, I.Y. Eremchev$^2$, K.R. Karimullin$^{1,2,3}$, I.A. Vasilieva$^1$, A.V. Naumov$^{1,2}$
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We measured fluorescence trails of the thin films of CdSe quantum dots grown in a liquid crystal matrix of cadmium octanoate
at high temperature. Blinking nature of the luminescence suggests that there are single quantum emitters on the surface
of the film. Hide Abstract
V.A. Burov, K.V. Dmitriev, O. D. Rumyantseva
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Essential difficulties arising in organization of anisotropic regulated illumination for an investigated object in correlation
thermoacoustic tomography schemes with a ring antenna array are discussed. However, the illumination of such a type is really
created in schemes with focusing structural elements. Output signal-to-interference relation is estimated for the focusing schemes. Hide Abstract
V.A. Burov, D.I. Zotov, O.D. Rumyantseva
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Algorithm of estimating the geometrical and phase corrections for receiving–transmitting transducers of ring antenna array of
ultrasound tomograph is discussed. These corrections should be taken into account during reconstruction of spatial distributions of
sound velocity and absorption of an investigated object, in order to avoid a deterioration of tomogram quality. Hide Abstract
S.M. Pronin$^1$, V.A. Vdovin$^2$, V.G. Andreev$^3$
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Optical coefficients of copper and gold films with thicknesses 0.5 to 10 nm are studied at the frequency of 10GHz. The vector
network analyzer R&S ZVA 24 and waveguide resonator are used in measuring circuit. It is shown that the experimental results
for transmission coefficient of the copper films correspond to the calculated values when equivalent thickness reduced on the 6 nm
is introduced. The measured value of conductivity of the copper film is almost an order of magnitude less than the bulk conductivity
of copper. Hide Abstract
V.I. Frolov$^1$, V.A. Vdovin$^2$, V.G. Andreev$^3$
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An experimental prototype of the near-field microscope based on the coaxial microwave resonator and a vector network analyzer
R&S ZVA 24 is described. The results of test measurements of the shift of the resonance frequency and the quality factor of the
resonance curve with the use of bulk conductors made of metals of different conductivity are presented. It is shown qualitatively that the
resonant frequency and the quality factor decreases as the probe approaches the surface of the conductor. Q–value is minimal when
using a conductor with the lowest conductivity. Hide Abstract
Physics and application of microwaves. Electrodynamics
A.A. Badarin$^{1,2}$, S.A. Kurkin$^{1,2}$, N.S. Frolov$^{1,2}$, A.E. Hramov$^{1,2}$,
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The influence of various factors on the characteristics of generation of multibeam vircator (the distance between the beams,
beams mismatch currents) is investigated numerically. Maps of regimes on the main planes of the control parameters of multipath
vircator are created. The effect of synchronization of the virtual cathodes in the model of a relativistic multibeam vircator
is revealed. Hide Abstract
D. I. Trubetskov$^1$, G.M. Vdovina$^2$
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Wave propagation in a drifting low-voltage electron beam has been studied. The causes of such a flow instabilities and features
of its interaction with the electromagnetic wave have been discussed. The effect of beam cross–sectional velocity variation on the
starting conditions BWO has been considered. Hide Abstract
K.T.C. Vua, R.V. Egorovb, V.L. Savvinc, D.A. Mikheevd, G.M. Kazaryan
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In the study a model of a rectenna array is analyzed. Possibilities of applying rectenna arrays for converting solar power into
electric energy are discussed. Potential options for manufacturing such structures and carrying out experiments are laid down. Hide Abstract
V.A. Cherepenin, V.N. Kornienko
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Methods of computer simulation were used for investigating of the electron beam dynamics in the multi-wave Cherenkov
generator. The possibility of the formation of a flow of charged particles moving toward the cathode part of device was demonstrated.
Basic characteristics of backward moving electron flow were studied. Hide Abstract
E.N. Egorov$^1$, A.G. Petrik$^2$, A.E. Hramov$^{1,2}$
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The study of influence of external harmonic signal on generation in low-voltage vircator with magnetron-injection gun as source
of electron beam in squeezed state are carried out. The classical phenomenon of synchronization in the distributed electron-wave
system are observed. The possibility of vircator output signal power increasing with the frequency of external signal changing are
shown. Hide Abstract
A.E. Dubinov$^{1,2}$, A.G. Petrik$^{3}$, S.A. Kurkin$^{3,4}$, N.S. Frolov$^{3,4}$, A. A. Koronovskii$^{3,4}$, A. E. Hramov$^{3,4}$
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In the present work we have studied the novel nonlinear phenomenon of plasma physics — beam–plasma instability in a charged
plasma in the absence of ions. We have shown the possibility of the instability development and analyzed the characteristics of
physical processes taking place during the beam-plasma interaction. Hide Abstract
V.M. Pikunov
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The paper deals with the effect of the degeneration of asymmetric hybrid waves in a circular periodic waveguide near the
frequency of $\pi$–type the symmetric mode E$_{01}$. This effect greatly intensifies on competition modes in the Cherenkov electronic
devices on overmoded waveguides. Hide Abstract
A. A. Rodovich, A.A. Seryakov, P.N. Zakharov
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Use of OFDM signals with central frequency sweep in radars offers some advantages over conventional radiolocation systems
based on chirp signals or short impulses, including increased time-domain resolution and dynamic range. The implementation
of such system is described in the article. The results of measurements demonstrating obtained range resolution of 10 cm are
presented. Hide Abstract
Yu. K. Aleshin, M. A. Sivkov
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The application of piezo quartz resonators (PQR) in liquid media has found a strong dependence of changes in their oscillation
frequency from liquid media permittivity. The present work shows theoretical calculation of edge effect for circular plane capacitor
and experimental research of influence of resonator’s geometrical parameters and permittivity of liquid media on frequency shift
of PQR. The effect of sensor’s capacity with different geometrical parameters of capacitor and various permittivity coefficients of
liquid media was experimentally determined. Hide Abstract
A.V. Titov
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The theory of orotron of common design, which utilizes two interacting electron beams, is presented here. The cases of a field
of constant amplitude and a Gaussian distribution of the field in the resonator are analyzed. Hide Abstract
A.A. Koronovskiy, S.A. Kurkin, A.A. Badarin, A.E. Hramov
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In this paper is considering dynamics of electron beam in coaxial drift space in external inhomogeneous magnetic field. Numerical
simulation, which was conducting, show possibility forming of virtual cathode with help of compression relativistic beam by external
magnetic field. Hide Abstract
D.A. Mikheev, V. L. Savvin
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A new principle of the electron beam grouping with cyclotron rotation in inhomogeneous magnetic fields is proposed. It is shown
that the electron 3D grouping may not be accompanied by an increase in space charge density in contrast to the electron bunching
during the one-dimensional motion of the electrons. Hide Abstract
A. I. Slepkov, O.V. Gallyamova
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The results of numerical simulation of the interaction between the relativistic electron beam focused by uniform magnetic field
and the field of generator with axisymmetric periodic waveguide are reported. The theoretic and numerical analysis of resonance
effect of focusing magnetic field were carried out. The range of resonance amplification and cyclotron absorption were revealed and
studied. Hide Abstract
