Физика список научных статей
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THE COMPARISON OF THE OPTICAL VORTICES FOCUSING BY SILICON DIFFRACTION AXICONS AND RING GRATINGS WITH VARIABLE RELIEF HEIGHTS USING HIGH-PERFORMANCE COMPUTER SYSTEMS
A study was made of the spatial distribution of the intensity of the Laguerre-superGaussian (1,0) modes with circular, radial and azimuthal polarization depending on the change in the height of silicon subwavelength optical elements, the height of which varied from 0.2 to 3 wavelengths. Simulation...
2022 / Savelyev D.A.WOSScopusВАК
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BROADBAND LIGHT ABSORBERS BASED ON MULTILAYER METAL-INSULATOR-METAL STRUCTURES
We study optical properties of multilayer resonant metal-insulator structures. It is shown that a simple three-layer metal-insulator-metal (MIM) structure can provide near-perfect absorption of light (more than 90%) in a 732 nm-wide wavelength range. We demonstrate that by making the MIM structure...
2022 / Kashapov A.I., Bezus E.A., Bykov D.A., Golovastikov N.V., Doskolovich L.L.WOSScopusВАК -
DETECTION OF ORBITAL ANGULAR MOMENTUM OF A LIGHT BY FORKED DIFFRACTION METHOD
Orbital angular momentum (OAM) is a characteristic of wave describing its spiral phase front. These waves can be applied in various fields such as quantum communications and computations, hence, there is a need for a compact and simple method of its generation and detection. Here we describe an...
2022 / Lebedeva E.S., Sedykh K.O., Venediktov I.O., Goltsman G.N., Sych D.V.WOSScopusВАК -
GAIN-SWITCHED VCSEL AS A QUANTUM ENTROPY SOURCE: THE PROBLEM OF QUANTUM AND CLASSICAL NOISE
We consider the problem of quantum noise extraction from polarization swapping in a gain-switched VCSEL. The principle of operation of a quantum random number generator is based on the generation of laser pulses with one of two orthogonal polarization states, followed by digitization of...
2022 / Shakhovoy R.A., Maksimova E.I.WOSScopusВАК -
VERACITY OF THE METHOD OF DETECTING SCATTERED LASER RADIATION FOR CONTENT MEASURING OF PARTICULATE MATTER IN AIR
The problem of measuring the parameters of dust particles in the environment is currently relevant for residents of densely populated cities. Measurements of the size and size distribution function of dust particles are carried out using instruments based on the method of scattering of laser...
2022 / Kurkova A.D., Davydov V.V.WOSScopusВАК -
FABRICATION OF DIFFRACTION GRATINGS FOR GENERATION OF OAM LIGHT
In this work we describe fabrication of diffraction gratings for generation of light with orbital angular momentum (OAM). OAM light characterized by topological charge l and modes with different l are orthogonal, which makes OAM light useful in quantum communication and tomography. We demonstrate...
2022 / Venediktov I.O., Sedykh K.O., Zolotov P.I., Kaurova N.S., Lebedeva E.S., Sych D.V., Goltsman G.N.WOSScopusВАК -
SILICON NANOANTENNA FOR CONTROLLING THE POLARIZATION DIRECTION OF RADIATION FROM STANDALONE QUANTUM LIGHT SOURCE
The emission control of standalone quantum sources has recently attracted the interest of the scientific community due to the growing technological capabilities for fabrication and on-demand positioning of these emitters. Here we report on simulation of silicon-on-insulator prismatic nanoantenna...
2022 / Baryshnikova K.V., Sergaeva O.N., Petrov M.I.WOSScopusВАК -
PECULIARITY OF ELECTRON DENSITY CALCULATION DURING INTERACTION OF ULTRASHORT LASER PULSE WITH NITROGENOUS BASE OF DNA MOLECULE ADENINE
Today, ultrashort laser pulses are used to study and analyze biomolecules. Their advantages over X-rays lie in the speed of measurement and accuracy, which allows studying the structure of a molecule on a time scale commensurate with the time of various biochemical processes in it. However, the...
2022 / Kharlamova А. A., Makarov D.N.WOSScopusВАК -
NONLINEAR CIRCULAR DICHROISM IN DIELECTRIC NANOPARTICLE DIMERS AND TRIMERS
We performed the theoretical study of circular dichroism (CD) in the second harmonic (SH) signal generated in nanostructures of different symmetries. In particular, we explored nonlinear response of dielectric AlGaAs nanoparticles and showed that even in the case of symmetric achiral shape circular ...
2022 / Nikitina A.D., Nikolaeva A.A., Petrov M.I., Frizyuk K.S.WOSScopusВАК -
SIMULATION OF TERAHERTZ PHOTONIC INTEGRATED ANTENNA
The rapid development of wireless devices, that take place over the last decade, is associated with an increase in the need to achieve a higher data transfer rate. To achieve this goal, it is necessary to use the terahertz (THz) range. The vast majority of THz devices (no matter bulk or integrated) ...
2022 / Seliverstov S.V., Svyatodukh S.S., Prokhodtsov A.I., Goltsman G.N.WOSScopusВАК -
TRANSPORT AND OPTICAL PHENOMENA IN TWO-DIMENSIONAL DIRAC SEMIMETALS
The discovery of graphene with Dirac cones at the Fermi energy attracted intense interest in the field of two-dimensional materials. However, in many two-dimensional materials, including graphene, Dirac points are gapped by spin-orbit coupling. Here we consider two-dimensional Dirac semimetals...
2022 / Rakhmanova G.R., Sedov D.D., Iorsh I.V.WOSScopusВАК -
EFFECT OF FIB-MODIFICATION OF SI(111) SURFACE ON GAAS NANOWIRE GROWTH
The paper presents the results of experimental studies of GaAs nanowire growth on Si(111) substrate with Ga focused ion beam modified areas with different treatment doses. We observed a significant difference between the parameters of nanowires arrays formed on modified and unmodified areas. It is...
2022 / Shandyba N.A., Kirichenko D.V., Chernenko N.E., Eremenko M.M., Balakirev S.V., Solodovnik M.S.WOSScopusВАК -
MULTISTAGE DROPLET EPITAXY FOR THE FABRICATION OF INAS/GAAS QUANTUM DOTS WITH ULTRA-LOW DENSITY
In this paper, we demonstrate a novel technique enabling fabrication of small-sized InAs/GaAs quantum dots with a very low surface density during droplet epitaxy. In contrast to the traditional two-stage approach, we introduce an additional stage of exposure to the ultra-low arsenic flux which...
2022 / Balakirev S.V., Kirichenko D.V., Chernenko N.E., Shandyba N.A., Eremenko M.M., Solodovnik M.S.WOSScopusВАК -
STUDY OF FIB-MODIFIED SILICON AREAS BY AFM AND RAMAN SPECTROSCOPY
This paper presents the results of atomic force microscopy and Raman spectroscopy studies of the effect of high-temperature annealing on the height/depth parameters of silicon areas modified by a focused ion beam. It is shown that the focused ion beam treatment with 5 beam passes leads to swelling...
2022 / Nikitina L.S., Lakhina E.A., Eremenko M.M., Balakirev S.V., Chernenko N.E., Shandyba N.A., Ageev O.A., Solodovnik M.S.WOSScopusВАК -
ELECTRON PHASE-BREAKING TIME IN ULTRA-THIN NB FILMS
Here we study the temperature dependences of the phase-breaking time in ultra-thin superconducting niobium (Nb) films. In Nb films, passivated with a layer of silicon (Si), a strong temperature dependence of the phase-breaking time is observed. However, in uncovered Nb films, we observe the...
2022 / Lomakin A.I., Baeva E.M., Titova N.A., Zolotov P.I., Kolbatova A.I., Goltsman G.N.WOSScopusВАК -
SIDEWALL ROUGHNESS MODEL FOR OPTICAL LOSSES CALCULATION IN PHOTONIC INTEGRATED CIRCUITS
One of the key performance indicators of photonic circuits is the value of optical propagation losses. Among several factors which impact these losses, the sidewall roughness is considered as the primary focus of this work. The optical signal, propagating along the photonic device, scatters on...
2022 / Shamin E.S., Sharapov A.A., Skuratov I.D., Demidov S.O., Gornev E.S.WOSScopusВАК -
THE KINETIC SIMULATION IN VACUUM ELECTRONICS: UNCOVERING THE FUNDAMENTAL NATURE OF NON-MAXWELLIAN DISTRIBUTION FUNCTION EFFECTS
This paper presents main theoretical results obtained in vacuum explosive-emission electronics by using of the numerical methods aimed to the direct solution of Vlasov Poisson kinetic equations. It was shown that computational physical kinetics makes it possible to explain a number of important...
2022 / Kozhevnikov V.Yu., Kozyrev A.V., Kokovin A.O., Semeniuk N.S.WOSScopusВАК -
GROWTH OF NANOSTRUCTURED COBALT THIN FILM AT OBLIQUE ANGLE DEPOSITION
Nanocolumnar Co thin films growth by oblique angle deposition on Si substrate is experimentally studied. Formation of regular arrays of vertical Co nanocolumns has been observed at incidence angles more than 80 degrees with rotation of substrate. Such films might be perspective material for...
2022 / Fattakhov I.S., Trushin T.O., Popov P.A., Mazaletsky M.L.WOSScopusВАК -
ELECTRICAL CONDUCTIVITY AND OPTICAL PROPERTIES OF WATER-BASED GRAPHENE/AGNWS HYBRID INKS FOR FLEXIBLE ELECTRONICS
The present study provides the description of water-based inks made of hybrid graphene-silver nanoparticles conductive fillers in a wide concentration range for printed electronics applications. Aqueous graphene suspensions were manufactured via ultrasonic exfoliation of pristine graphite, whereas...
2022 / Dronova M.A., Danilov E.A., Veretennikov M.R.WOSScopusВАК -
OPTICAL SECOND-HARMONIC RESPONSE OF AN AXIALLY-SYMMETRIC MEDIUM UNDER RADIALLY POLARIZED EXCITATION
We simulated optical second harmonic response, both surface and bulk, of axially symmetric media excited by tightly focused radially polarized fundamental beams. The modeling showed a highly localized character of second harmonic generation. We estimated decrease of overall second harmonic signal...
2022 / Scherbak S.A., Reshetov I.V., Lipovskii A.A.WOSScopusВАК
