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Bulletin of the Lebedev Physics Institute最新文献

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Enhancement of IR Absorption of Silicon by Its Doping with Sulfur Atoms
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-04-02 DOI: 10.3103/S1068335624602139
I. M. Podlesnykh, M. S. Kovalev, E. N. Kabachkov, V. A. Dravin, S. I. Kudryashov
{"title":"Enhancement of IR Absorption of Silicon by Its Doping with Sulfur Atoms","authors":"I. M. Podlesnykh,&nbsp;M. S. Kovalev,&nbsp;E. N. Kabachkov,&nbsp;V. A. Dravin,&nbsp;S. I. Kudryashov","doi":"10.3103/S1068335624602139","DOIUrl":"10.3103/S1068335624602139","url":null,"abstract":"<p>The extension of the spectral absorption range of crystalline silicon to the near- and mid-IR region is possible by doping it using ion implantation and subsequent annealing methods. Pulsed laser annealing makes it possible to eliminate ion-induced defects, which leads to recrystallization of the crystal structure, and activation of impurities. The crystal structure of the obtained samples, as well as their chemical, optical, and electrical characteristics are analyzed comprehensively.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1","pages":"7 - 13"},"PeriodicalIF":0.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spontaneous Nucleation of Diamond in a Methane–Hydrogen Microwave Plasma on YAG:Ce Particles
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-04-02 DOI: 10.3103/S106833562460205X
V. S. Sedov, A. K. Martyanov, S. V. Kuznetsov, I. A. Tiazhelov, S. S. Savin, L. V. Tarala, V. I. Konov
{"title":"Spontaneous Nucleation of Diamond in a Methane–Hydrogen Microwave Plasma on YAG:Ce Particles","authors":"V. S. Sedov,&nbsp;A. K. Martyanov,&nbsp;S. V. Kuznetsov,&nbsp;I. A. Tiazhelov,&nbsp;S. S. Savin,&nbsp;L. V. Tarala,&nbsp;V. I. Konov","doi":"10.3103/S106833562460205X","DOIUrl":"10.3103/S106833562460205X","url":null,"abstract":"<p>The effect of spontaneous nucleation of the diamond phase on cerium-doped yttrium aluminum garnet (YAG:Ce) particles is observed under the action of a microwave plasma in a methane‒hydrogen gas mixture at a substrate temperature of 820°C. These conditions facilitate the process of “chemical vapor deposition (CVD) of diamond” (CVD), but the synthesis of diamond films requires additional procedures to stimulate nucleation. It is shown that YAG:Ce particles can be used as diamond nucleation centers. After the 20-min CVD process, diamond particles of different sizes and a density of ≈10<sup>6</sup> cm<sup>‒2</sup>, which is 15‒20% of the deposition density of YAG:Ce particles, are detected by SEM. Luminescence bands from Ce<sup>3+</sup> ions (550 nm) and Si-V centers in diamond (738 nm) are detected in the photoluminescence spectra of the synthesized diamond crystallites. The observed effect is interesting for studying the processes of diamond phase growth by the CVD method, especially in the synthesis of diamond composites for the tasks of visualizing high-power X-ray radiation.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1","pages":"31 - 36"},"PeriodicalIF":0.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Image Superresolution in Single-Pixel Imaging with Generative Adversarial Networks
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-04-02 DOI: 10.3103/S1068335624601729
D. V. Babukhin, A. A. Reutov, D. V. Sych
{"title":"Image Superresolution in Single-Pixel Imaging with Generative Adversarial Networks","authors":"D. V. Babukhin,&nbsp;A. A. Reutov,&nbsp;D. V. Sych","doi":"10.3103/S1068335624601729","DOIUrl":"10.3103/S1068335624601729","url":null,"abstract":"<p>Imaging of physical objects using single-pixel cameras is an actively developing area at the intersection of optics and computational mathematics. Image restoration algorithms used in single-pixel cameras usually provide low resolution due to practical limitations on realistic computing resources. In this paper, we demonstrate an increase in the resolution of images obtained in single-pixel imaging using a generative adversarial neural network and discuss its application using the example of chest X-ray images from the MedMNIST dataset.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1","pages":"14 - 21"},"PeriodicalIF":0.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structure of Arrays of Laterally Associated InGaAs/GaAs Quantum Dots Grown by Molecular Beam Epitaxy with a Bi Surfactant
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-04-02 DOI: 10.3103/S1068335624601031
A. V. Klekovkin, A. A. Rudenko, V. I. Tsekhosh, I. P. Kazakov
{"title":"Structure of Arrays of Laterally Associated InGaAs/GaAs Quantum Dots Grown by Molecular Beam Epitaxy with a Bi Surfactant","authors":"A. V. Klekovkin,&nbsp;A. A. Rudenko,&nbsp;V. I. Tsekhosh,&nbsp;I. P. Kazakov","doi":"10.3103/S1068335624601031","DOIUrl":"10.3103/S1068335624601031","url":null,"abstract":"<p>Use is made of atomic force and scanning electron microscopies to study the formation of InGaAs/GaAs quantum dots by molecular beam epitaxy under the action of a Bi vapor flow on the growth surface at different temperatures of the GaAs substrate. It is shown that Bi acts as a surfactant, increasing the temperature of emergence of laterally associated quantum dots by 100°C.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1","pages":"37 - 41"},"PeriodicalIF":0.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Realization of the SERS Effect in a Silicon Semiconductor Structure with Fano Resonance
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-04-02 DOI: 10.3103/S1068335624601924
N. N. Melnik, E. V. Perevedentseva, V. V. Tregulov, G. N. Skoptsova, Yu. N. Gorbunova, D. S. Kostsov
{"title":"Realization of the SERS Effect in a Silicon Semiconductor Structure with Fano Resonance","authors":"N. N. Melnik,&nbsp;E. V. Perevedentseva,&nbsp;V. V. Tregulov,&nbsp;G. N. Skoptsova,&nbsp;Yu. N. Gorbunova,&nbsp;D. S. Kostsov","doi":"10.3103/S1068335624601924","DOIUrl":"10.3103/S1068335624601924","url":null,"abstract":"<p>A method for obtaining active surface-enhanced Raman scattering (SERS) substrates with an enhancement factor of ~10<sup>4</sup> is presented. It is shown that substrates with a more pronounced Fano resonance in a silicon porous structure obtained by thermal boron diffusion have a high enhancement factor.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1","pages":"1 - 6"},"PeriodicalIF":0.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Theoretical Investigation of Electron Dynamics in Liquid Media under Nanosecond Pulsed Laser Irradiation
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-04-02 DOI: 10.3103/S106833562460102X
H. Delibašić-Marković, V. Petrović, I. Petrović
{"title":"Theoretical Investigation of Electron Dynamics in Liquid Media under Nanosecond Pulsed Laser Irradiation","authors":"H. Delibašić-Marković,&nbsp;V. Petrović,&nbsp;I. Petrović","doi":"10.3103/S106833562460102X","DOIUrl":"10.3103/S106833562460102X","url":null,"abstract":"<p>In this study, we develop a comprehensive mathematical model to explore the dynamics of laser-induced breakdown in water-like media, focusing on the electron multiplication process across a spectrum of laser intensities and wavelengths, ranging from 355 to 1064 nm. Utilizing the Green’s function method, we derived an analytical solution for the primary differential equation governing the temporal evolution of free-electron density. This methodological approach allows for an accurate characterization of the electron multiplication thresholds and precise timing of electrical breakdown under varied laser settings. Our findings demonstrate a robust correlation with data from experimental studies on laser interactions with water-like substances, confirming the model’s predictive accuracy and its utility in enhancing our understanding of the mechanisms governing laser-induced electron dynamics. This research provides valuable insights for optimizing laser applications in similar environments, enhancing both theoretical understanding and practical application of the observed phenomena.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1","pages":"22 - 30"},"PeriodicalIF":0.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wide-Aperture Liquid Crystal Electro-Optic Modulator of Carbon Monoxide Laser Radiation
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-03-18 DOI: 10.3103/S1068335625600135
A. V. Kuznetsov, A. A. Zhukovich-Gordeeva, Yu. M. Klimachev, A. V. Kaznacheev, A. Yu. Kozlov, M. V. Minchenko, O. A. Rulev, D. V. Sinitsyn, E. P. Pozhidaev, A. A. Ionin
{"title":"Wide-Aperture Liquid Crystal Electro-Optic Modulator of Carbon Monoxide Laser Radiation","authors":"A. V. Kuznetsov,&nbsp;A. A. Zhukovich-Gordeeva,&nbsp;Yu. M. Klimachev,&nbsp;A. V. Kaznacheev,&nbsp;A. Yu. Kozlov,&nbsp;M. V. Minchenko,&nbsp;O. A. Rulev,&nbsp;D. V. Sinitsyn,&nbsp;E. P. Pozhidaev,&nbsp;A. A. Ionin","doi":"10.3103/S1068335625600135","DOIUrl":"10.3103/S1068335625600135","url":null,"abstract":"<p>Liquid crystal electro-optic modulators of mid-IR radiation have been developed, which can control the polarization state of CO laser radiation in the wavelength range of 5.1 to 5.6 μm with light aperture up to 2.5 cm<sup>2</sup>. The use of a ferroelectric liquid crystal as an electrooptic medium located between crossed polarizer and analyzer made it possible to ensure thermally stable electro-optic modulation of CO-laser radiation at a frequency from 1 to 10 kHz and a contrast ratio from 15 : 1 to 25 : 1. The modes of electrically controlled half-wave and quarter-wave plates with switching times of polarization states from 20 to 50 μs are ensured as is the ability to remember the obtained polarization state after switching off control voltage. The minimum polarization state switching time was 1.4 μs, which was observed at a modulation frequency of 40 kHz and rotation of the liquid-crystal optic axis by an angle of a few degrees, which decreased the contrast ratio to 1.3 : 1.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12 supplement","pages":"S1047 - S1060"},"PeriodicalIF":0.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of Numerical Methods for Applications of Coherent Radiation in Studies of the Internal Structure of Objects (Part I)
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-03-18 DOI: 10.3103/S1068335625600111
A. S. Busarov, A. V. Vinogradov, N. L. Popov, I. A. Artyukov
{"title":"Development of Numerical Methods for Applications of Coherent Radiation in Studies of the Internal Structure of Objects (Part I)","authors":"A. S. Busarov,&nbsp;A. V. Vinogradov,&nbsp;N. L. Popov,&nbsp;I. A. Artyukov","doi":"10.3103/S1068335625600111","DOIUrl":"10.3103/S1068335625600111","url":null,"abstract":"<p>We consider the problem of finding the spatial distribution of the complex dielectric constant of an object of arbitrary shape. An algorithm for solving this problem is constructed by processing phase diffraction patterns obtained by successive irradiation of the object with Gaussian beams. Formally, we deal with the coefficient inverse problem for the three-dimensional parabolic wave equation or the equivalent inverse problem of quantum scattering theory for a particle moving in a two-dimensional time-dependent potential. To solve the latter, the wave function of the system is expanded in terms of functions of Gaussian beams propagating in free space. The main advantages of the approach are the direct determination of the refractive index along with absorption, as well as the elimination of rotation or movement of the sample and radiation source; its further development can lead to the emergence of a qualitatively new nondestructive method for studying and testing materials and samples.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12 supplement","pages":"S1004 - S1009"},"PeriodicalIF":0.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Laser Crystallization of Silicon Coatings on Flexible Polymer Substrates: Effect of the Absorbing Layer Metal
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-03-18 DOI: 10.3103/S1068335624601353
A. A. Serdobintsev, L. D. Volkovoinova
{"title":"Laser Crystallization of Silicon Coatings on Flexible Polymer Substrates: Effect of the Absorbing Layer Metal","authors":"A. A. Serdobintsev,&nbsp;L. D. Volkovoinova","doi":"10.3103/S1068335624601353","DOIUrl":"10.3103/S1068335624601353","url":null,"abstract":"<p>The results of studying the effect of metal coatings on the process of silicon crystallization on flexible polymer substrates are presented. The study was conducted using such metals as aluminum, tin, nickel, and molybdenum as examples. Crystallization was carried out by the method of metal-induced laser-stimulated crystallization (MILSC). To determine the degree of influence of a metal on the crystallization process, the silicon structure after processing was investigated by the Raman scattering method.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12 supplement","pages":"S1084 - S1089"},"PeriodicalIF":0.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reflectometry in the Soft X-Ray Range with a Laser-Plasma Radiation Source
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-03-18 DOI: 10.3103/S1068335625600019
E. N. Ragozin
{"title":"Reflectometry in the Soft X-Ray Range with a Laser-Plasma Radiation Source","authors":"E. N. Ragozin","doi":"10.3103/S1068335625600019","DOIUrl":"10.3103/S1068335625600019","url":null,"abstract":"<p>The design and application of reflectometers with a grazing incidence grating for the wavelength region shorter than 300 Å are discussed. The focus is on reflectometers with laser-produced plasma sources excited by a pulsed-periodic laser with “moderate” output parameters (pulse energy of 0.1 to 1 J, pulse duration of 10 ns or less). Our findings can be useful for the development of metrological facilities in the soft X-ray range of the spectrum, both laboratory-based and included in commercial production of integrated circuits by projection X-ray lithography.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12 supplement","pages":"S983 - S993"},"PeriodicalIF":0.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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