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7th International School and Conference "Saint-Petersburg OPEN 2020" on Optoelectronics, Photonics, Engineering and Nanostructures
Vol. 1695: 7th International School and Conference "Saint Petersburg OPEN 2020": Optoelectronics, Photonics, Engineering and Nanostructures April 27-30, 2020, Saint Petersburg, Russian Federation.
Bristol :
Institute of Physics Publishing (IOP), 2020.
Under the general editorship: Zhukov A.
7th International School and Conference "Saint-Petersburg OPEN 2020" on Optoelectronics, Photonics, Engineering and Nanostructures was held on April 27 - 30, 2020. The Organizer of the conference is the Alferov Federal State Budgetary Institution of Higher Education and Science Saint Petersburg National Research Academic University of the Russian Academy of Sciences. Initially, the School and Conference was supposed to be held in full-time format at the Alferov Academic University (Saint-Petersburg, Russia), as it happened in the past. However, due to the restrictions imposed by the city authorities on holding mass events due to the threat of the spread of the COVID-19 infection, the conference committees decided to move the conference to the online format. The conference consisted of poster reports presented by the participants and online oral presentations by invited speakers. Posters and video reports of the participants were posted on the conference website. Invited speakers made their presentations online. During their speeches, participants could discuss and ask questions in the chat. The School and Conference included a series of invited talks given by leading professors with the aim to introduce young scientists with actual problems and major advances in physics and technology.
Chapters
Maximov M., Zhukov A., , in: 7th International School and Conference "Saint-Petersburg OPEN 2020" on Optoelectronics, Photonics, Engineering and NanostructuresVol. 1695: 7th International School and Conference "Saint Petersburg OPEN 2020": Optoelectronics, Photonics, Engineering and Nanostructures April 27-30, 2020, Saint Petersburg, Russian Federation.: Bristol: Institute of Physics Publishing (IOP), 2020. P. 012068-1–012068-6.
Quantum dot based monolithic edge-emitting semiconductor lasers at 1.25 m are
ideal sources for the generation of broad optical frequency combs for optical communication
applications. In this work, InAs/InGaAs quantum dot lasers with di erent total laser length to
absorber length ratio and with di erent p-doping concentrations in the GaAs barrier sections
are investigated experimentally in dependence on the gain ...
Added: December 29, 2020
Moiseev E., Kryzhanovskaya N., Maximov M. et al., , in: 7th International School and Conference "Saint-Petersburg OPEN 2020" on Optoelectronics, Photonics, Engineering and NanostructuresVol. 1695: 7th International School and Conference "Saint Petersburg OPEN 2020": Optoelectronics, Photonics, Engineering and Nanostructures April 27-30, 2020, Saint Petersburg, Russian Federation.: Bristol: Institute of Physics Publishing (IOP), 2020. P. 012094-1–012094-5.
We studied a far-field emission pattern for microlasers with InGaAs/GaAs quantum
well-dots in the active region. Angular-resolved electroluminescence spectra measurement
revealed various far-field patterns depending on current and resonance mode. ...
Added: January 18, 2021
Zhukov A., , in: 7th International School and Conference "Saint-Petersburg OPEN 2020" on Optoelectronics, Photonics, Engineering and NanostructuresVol. 1695: 7th International School and Conference "Saint Petersburg OPEN 2020": Optoelectronics, Photonics, Engineering and Nanostructures April 27-30, 2020, Saint Petersburg, Russian Federation.: Bristol: Institute of Physics Publishing (IOP), 2020. P. 012072-1–012072-5.
Two laser heterostructures with active region based on seven InGaAs quantum wells
and on InGaAs/InGaAlAs superlattice were grown on InP substrates by molecular beam
epitaxy. Both active regions were designed for vertical-cavity surface-emitting lasers of 15351565 nm spectral range and had total thickness about 80-90 nm. Characteristics of edgeemitting
laser diodes fabricated from grown laser heterostructures were studied ...
Added: January 26, 2021
Kryzhanovskaya N., Moiseev E., Zhukov A. et al., , in: 7th International School and Conference "Saint-Petersburg OPEN 2020" on Optoelectronics, Photonics, Engineering and NanostructuresVol. 1695: 7th International School and Conference "Saint Petersburg OPEN 2020": Optoelectronics, Photonics, Engineering and Nanostructures April 27-30, 2020, Saint Petersburg, Russian Federation.: Bristol: Institute of Physics Publishing (IOP), 2020. P. 012096.
We present an analysis of spectral and threshold characteristics of InGaAs/GaAs
quantum well-dot microdisk laser operated under cw current injection at room temperature
without external cooling. The experimental values of the threshold current for the disk and
ring microlasers are compared. We observe that the threshold current can be significantly
decreased in devices with large diameters (more than 30 ...
Added: January 26, 2021
Moiseev E., Kryzhanovskaya N., Maximov M. et al., , in: 7th International School and Conference "Saint-Petersburg OPEN 2020" on Optoelectronics, Photonics, Engineering and NanostructuresVol. 1695: 7th International School and Conference "Saint Petersburg OPEN 2020": Optoelectronics, Photonics, Engineering and Nanostructures April 27-30, 2020, Saint Petersburg, Russian Federation.: Bristol: Institute of Physics Publishing (IOP), 2020. P. 012093-1–012093-4.
The scanning interferometer method is used to measure the line width of microdisk
and microring lasers with a diameter of the resonator ranging from 15 to 50 μm and active area
based on InGaAs/GaAs quantum well-dots. Above the threshold, the spectral width of the line
did not exceed 3 pm for all samples under study. ...
Added: January 26, 2021
Zhukov A., Максимов М. В., , in: 7th International School and Conference "Saint-Petersburg OPEN 2020" on Optoelectronics, Photonics, Engineering and NanostructuresVol. 1695: 7th International School and Conference "Saint Petersburg OPEN 2020": Optoelectronics, Photonics, Engineering and Nanostructures April 27-30, 2020, Saint Petersburg, Russian Federation.: Bristol: Institute of Physics Publishing (IOP), 2020. P. 012095.
We present a study of diode lasers with two identical optically coupled ridges.
Two coupled ridges were made gradually divergent to a distance of 50 μm which
allowed creating three electrically isolated sections within a single laser. We carried out
numerical simulations of the electromagnetic modes in the coupled ridge waveguide
and calculated far-field patterns for each mode. The ...
Added: January 27, 2021
Scherbak S., Kryzhanovskaya N., Zhukov A., , in: 7th International School and Conference "Saint-Petersburg OPEN 2020" on Optoelectronics, Photonics, Engineering and NanostructuresVol. 1695: 7th International School and Conference "Saint Petersburg OPEN 2020": Optoelectronics, Photonics, Engineering and Nanostructures April 27-30, 2020, Saint Petersburg, Russian Federation.: Bristol: Institute of Physics Publishing (IOP), 2020. P. 012128-1–012128-6.
We performed a numerical study of a surrounding medium influence on coupling
efficiency between a microdisk resonator supporting optical whispering gallery modes and a
straight optical waveguide. Quality factors of the modes and relative optical power coupled to
the waveguide were calculated using COMSOL Multiphysics environment. It was shown that
the most efficient coupling takes place when propagation constants ...
Added: January 27, 2021
Priority areas:
engineering science
Language:
English
Publication based on the results of:
Shipilov F., Barnyakov A., Ivanov A. et al., / Series Physics "arxiv.org". 2026.
A fast simulation of the detector response is a vital task in high-energy physics (HEP). Traditional Monte-Carlo methods form the backbone of modern particle physics simulation software but are computationally expensive. We present a machine-learning-based approach to fast simulation of the Focusing Aerogel Ring Imaging Cherenkov (FARICH) detector response. Given a particle track and momentum, ...
Added: May 19, 2026
Malinovsky A. M., Пилипенко С. В., Mikhalchenko A. O. et al., Astronomy Reports 2026 Vol. 70 P. 1–6
Radiation from rotational transitions of CO molecules in distant galaxies creates a chaotic background with an intensity reaching 1000 Jy/sr at a wavelength of approximately 1 mm. This background will pose a serious problem, when measuring spectral distortions of the cosmic microwave background, in particular, the mu-distortion, which presumably has an intensity of less than ...
Added: May 19, 2026
Kaveev A. K., Fedorov V. V., Pavlov A. V. et al., Journal of Materials Chemistry C 2026 Vol. 14 No. 7 P. 2697–2705
Bismuth nanostructures represent a promising material platform for semiconductor nanooptoelectronics and colorimetry owing to the multi-colored light reflection and quantum confinement. In this work, we study the photoluminescent properties of bismuth nanostructures grown using molecular beam epitaxy on the planar CaF2/Si(111) surface. We demonstrate the different surface morphologies of Bi, ranging from planar films obtained ...
Added: May 19, 2026
Pavlova T., V.M. Shevlyuga (Шевлюга В. М., Applied Surface Science 2026 Vol. 736 P. 166813–166813
The objective of miniaturizing doped areas in silicon, with the ultimate goal of achieving atomic-precision doping, requires a fundamental understanding of the dopant incorporation process at the atomic level. We present a combined scanning tunneling microscopy (STM) and density functional theory (DFT) investigation of single phosphorus atom incorporation into the Si(100) surface. Phosphorus was supplied ...
Added: May 19, 2026
Pasternak D., Romshin A., Khmelnitsky Р. et al., Carbon 2026 Vol. 256 Article 121655
A single-photon source (SPS) is a key component required for quantum communication devices. We report the
discovery of bright diamond-based SPS created by nature. It is shown that narrow (≤2 nm) lines observed in the
500-800 nm range in photoluminescence (PL) spectra of the surface layer of untreated Yakut diamonds rich in
nitrogen and hydrogen are linked to ...
Added: May 19, 2026
Smirnov A., Kurtina D. A., Saitov S. R. et al., Optical Materials: X 2026 Vol. 30 Article 100441
Chiral semiconductor nanostructures and nanoparticles are promising materials for applications in biological sensing, enantioselective separation, photonics, and spin-polarized devices. Here we performed a detailed analysis of optical properties of chiral CdSe nanoplatelets with thickness of 2 and 3 monolayers (ML) with Nacetyl-L-cysteine ligands. We studied the absorption spectra peculiarities, analyzed time-resolved photoluminescence and investigated circular ...
Added: May 18, 2026
Smirnov A., Mantsevich V. N., Saitov S. R. et al., Journal of Applied Physics 2026 Vol. 139 Article 185702
This work presents a comprehensive investigation into the temperature-dependent thermally stimulated conductivity and photoconductivity of vacuum-annealed thin films based on core–shell CdSe/CdS nanoplatelets passivated with oleic acid ligands. Controlled thermal annealing under vacuum conditions leads to a substantial increase in both dark and photoinduced conductivity, which is primarily attributed to partial desorption of the ligands. ...
Added: May 18, 2026
Масютин Д. А., Moiseev E., Komarov S. et al., Письма в Журнал технической физики 2026 Т. 52 № 7 С. 27–30
Исследованы инжекционные полупроводниковые микролазеры с кольцевым резонатором радиусом 15 мкм с несимметричным расположением внутреннего отверстия резонатора. Показано, что асимметрия обеспечивает формирование в диаграмме направленности двух лепестков излучения, разориентированных на 50° относительно оси смещения внутреннего отверстия. Измеренная добротность резонаторов сопоставима с добротностью дисковых резонаторов и находится на уровне ∼ 10^6. ...
Added: May 18, 2026
The Journal of Physical Chemistry Letters 2026 Vol. 17 No. 18 P. 5386–5394
We demonstrate and rationalize the effect of Au nanoparticles (NPs) on the hierarchical g-C3N4/CeO2 heterojunction. g-C3N4/CeO2 decorated with monodispersed plasmonic Au NPs was synthesized. Detailed analyses showed that CeO2 nanocubes and monodispersed Au NPs were evenly distributed over the 2D g-C3N4 surface, forming a robust interface enriched with abundant active sites. The structure enabled efficient separation of photogenerated charge ...
Added: May 16, 2026
Das A., Paul R., Sharma N. et al., Colloids and Surfaces A: Physicochemical and Engineering Aspects 2026 Vol. 728 P. 138830
Niobium-doped TiO2 (Nb-TiO2), demonstrates dual functionality as an efficient photocatalyst for dye degradation and a promising photoelectrocatalyst for water oxidation. Nb incorporation via a facile hydrothermal method was confirmed by XRD (Rietveld refinement), XPS, TEM, FT-IR, Raman, and BET analyses, indicating successful lattice doping and structural modification. Photocatalytic dye degradation experiments were conducted using a model ...
Added: May 16, 2026
Kolokolov I., Lebedev V., Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 2026 Vol. 113 Article 054117
We theoretically investigate the correlation functions of the phase of a light wave propagating through a
turbulent medium. We use an equation for the logarithm of a wave packet envelope, which includes a secondorder
nonlinear term. Based on this equation, we develop a diagrammatic technique to calculate corrections
to the correlation function obtained in the linear approximation. We ...
Added: May 15, 2026
Гущина В. А., / Series chemrxiv-2023-vpzhz-v2 "ChemRxiv". 2023.
All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are being intensively studied due to their unique properties and wide range of applications; however, however, the nature of their optical properties is not yet fully understood due to the difficulty of synthesis of singlephase nanoparticles. In this article we describe the features of the synthesis of single-phase particles ...
Added: May 14, 2026
Гущина В. А., Mendeleev Communications 2025 Vol. 35 No. 2 P. 193–195
All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are intensively studied for their unique optical properties, though synthesizing single-phase nanoparticles has posed challenges. Detailed synthesis method of CsPbBr3 and Cs4PbBr6 single-phase nanoparticles and their chemical and phase analysis are described. Distinctive optical characteristics, such as photoluminescence, optical band gap and the Urbach tail region, are revealed and explained within the current ...
Added: May 14, 2026
Гущина В. А., Physics of Complex Systems, Russia 2026 Vol. 7 No. 1 P. 3–15
Heterostructures based on ZnO nanorods and CsPbBr3 nanocrystals were investigated for their potential as semiconductor SERS substrates. We found that ZnO morphology governs the efficiency of interfacial energy transfer, leading to enhanced photoluminescence under 390 nm excitation and a noticeable reduction of the bandgap in the composites. Raman analysis revealed a pronounced intensity enhancement and ...
Added: May 14, 2026
Qin X., Deng Y., Shchur L. et al., / Series arXiv "math". 2026. No. 2603.02962.
We perform a Monte Carlo analysis of the Ising model on many three-dimensional lattices. By means of finite-size scaling we obtain the critical points and determine the scaling dimensions. As expected, the critical exponents agree with the three-dimensional Ising universality class for all models. The irrelevant field, as revealed by the correction-to-scaling amplitudes, appears to ...
Added: April 20, 2026
Pilé I., Deng Y., Shchur L., / Series arXiv "math". 2026. No. 2604.10254.
We investigate the spatial overlap of successive spin configurations in Markov chain Monte Carlo simulations using the local Metropolis algorithm and the Svendsen-Wang and Wolff cluster algorithms. We examine the dynamics of these algorithms for two models in different universality classes: the Ising model and the Potts model with three components. The overlap of two ...
Added: April 20, 2026
Do T. T., Xing J., Liu S. et al., APL Materials 2025 Vol. 13 No. 9 Article 091111
Semiconductor lead halide perovskites have attracted significant attention for various applications. Understanding the impact of material composition on optical properties is essential for optimizing device performance. Here, we performed magneto-optical spectroscopy on high-quality bulk CsPbBr3, MAPbBr3, and MAPbI3 single crystals under magnetic fields of up to 30 T. The results revealed distinctive excitonic responses to the magnetic ...
Added: January 26, 2026
Chernyshov D., Satanin A., Shchur L., / Series arXiv "math". 2025.
We investigate the boundary separating regular and chaotic dynamics in the generalized Chirikov map, an extension of the standard map with phase-shifted secondary kicks. Lyapunov maps were computed across the parameter space (K,K(α, τ)) and used to train a convolutional neural network (ResNet18) for binary classification of dynamical regimes. The model reproduces the known critical ...
Added: November 21, 2025
Kar M., Sarkar R., Pal S. et al., Physical Review B: Condensed Matter and Materials Physics 2020 Vol. 101 No. 19 P. 195305
In this article, we propose a new two-dimensional CP3 material with distinguished properties from comprehensive first-principles calculations. It has excellent thermal, mechanical, and dynamical stabilities and promise for experimental fabrication. The low cleavage energy (0.57J/m2) implies the plausibility of CP3 single-layer exfoliation from bulk structure. Other than exfoliation, we predict an alternative route to synthesize CP3 monolayer through C atoms doping ...
Added: November 19, 2025
Kar M., Sarkar R., Pal S. et al., Journal of Physical Chemistry C 2020 Vol. 124 No. 39 P. 21357–21365
Two-dimensional (2D) van der Waals heterostructures formed by stacking two different 2D materials have gained immense attention as they have the potential to show interesting properties. Herein, we report the detailed electronic structure of recently synthesized MoS2/SnS2 and MoSe2/SnS2 heterostructures obtained through density functional calculations. Our study shows that the MoS2/SnS2 heterostructure has a type-I band alignment with ...
Added: November 19, 2025
Khoroshko V., Pugach N., Stanchik A. et al., The Journal of Physical Chemistry Letters 2025 Vol. 16 No. 28 P. 7212–7216
Cu2ZnGeS4xSe4(1−x) (CZGSSe) single crystals were grown by chemical
vapor transport (CVT) from synthesized polycrystals using iodine as a transport
agent. The elemental analysis showed good agreement with stoichiometry. The values
of the band gap of solid solutions are determined from the transmission spectra in the
region of the absorption edge, and its concentration dependence, which has a
nonlinear quadratic dependence ...
Added: November 17, 2025
-, 2025.
12-th International School and Conference “Saint Petersburg OPEN
2025” on Optoelectronics, Photonics, Engineering and Nanostructures
carries on the tradition of annual conferences and schools organized at
St Petersburg Academic University for students, PhD students and young
scientists. More detailed information on the School and Conference is
presented on https://spb.hse.ru/spbopen/
The Book of Abstracts includes abstracts of contributed works accepted
for presentation at ...
Added: October 29, 2025
Кузьминых И. О., Kuzin A., Флоря И. Н. et al., Нано- и микросистемная техника 2025 Т. 27 № 4 С. 184–194
В работе рассмотрены основные варианты детектирования водорода, а также приведены требования, которые предъявляются к сенсорам водорода. Проанализированы преимущества и недостатки существующих решений по детектированию водорода и проведен сравнительный анализ основных метрик коммерчески доступных сенсоров водорода. Было установлено, что оптические сенсоры преодолевают основную проблему существующих сенсоров – использование электрического тока в чувствительной зоне сенсоров. Данная обзорная ...
Added: April 30, 2025
Solodovnik M., Balakirev S., Ivan S. Makhov et al., Applied Surface Science 2025 Vol. 700 Article 163211
Despite the rapid growth in the number of studies devoted to quantum dot (QD) formation on patterned substrates,
segregation effects that have a significant impact on the properties of QD-based heterostructures remain
largely unexplored. In this paper, we focus on the influence of segregation under different capping regimes on the
optical properties of various InAs/GaAs nanostructures: QDs and ...
Added: April 17, 2025