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Bulletin of the Lebedev Physics Institute最新文献

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Ultrahigh Modal Gain in Stripe Injection Lasers and Microlasers Based on InGaAs/GaAs Quantum Dots 基于InGaAs/GaAs量子点的条纹注入激光器和微激光器的超高模态增益
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-05-31 DOI: 10.3103/S106833562560007X
F. I. Zubov, Yu. M. Shernyakov, N. Yu. Gordeev, S. A. Mintairov, N. A. Kalyuzhnyy, M. V. Maximov, N. V. Kryzhanovskaya, E. I. Moiseev, A. M. Nadtochiy, A. E. Zhukov
{"title":"Ultrahigh Modal Gain in Stripe Injection Lasers and Microlasers Based on InGaAs/GaAs Quantum Dots","authors":"F. I. Zubov,&nbsp;Yu. M. Shernyakov,&nbsp;N. Yu. Gordeev,&nbsp;S. A. Mintairov,&nbsp;N. A. Kalyuzhnyy,&nbsp;M. V. Maximov,&nbsp;N. V. Kryzhanovskaya,&nbsp;E. I. Moiseev,&nbsp;A. M. Nadtochiy,&nbsp;A. E. Zhukov","doi":"10.3103/S106833562560007X","DOIUrl":"10.3103/S106833562560007X","url":null,"abstract":"<p>Lasers of different designs (stripe lasers and lasers with a half-disk cavity) based on InGaAs quantum dots formed by a mechanism different from the Stransky–Krastanov growth are studied. The possibility of lasing on the fundamental optical transition at record-high (134–153 cm<sup>–1</sup>) optical losses is demonstrated. The saturated modal gain is estimated to be 45 cm<sup>–1</sup> per quantum dot layer, which exceeds the values typical for conventional quantum-dot lasers by several times.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1 supplement","pages":"S1 - S6"},"PeriodicalIF":0.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145733","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
Harmonically Mode-Locked Fiber Laser: Stabilisation and Precise Control of the Pulse Repetition Rate Using a cw Spectral Component 谐波锁模光纤激光器：利用连续波光谱分量稳定和精确控制脉冲重复率
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-05-31 DOI: 10.3103/S1068335625600172
V. A. Ribenek, I. O. Zolotovskii, P. A. Itrin, D. A. Korobko
{"title":"Harmonically Mode-Locked Fiber Laser: Stabilisation and Precise Control of the Pulse Repetition Rate Using a cw Spectral Component","authors":"V. A. Ribenek,&nbsp;I. O. Zolotovskii,&nbsp;P. A. Itrin,&nbsp;D. A. Korobko","doi":"10.3103/S1068335625600172","DOIUrl":"10.3103/S1068335625600172","url":null,"abstract":"<p>This paper examines a soliton fiber laser with harmonic mode locking via nonlinear polarization rotation. A characteristic feature of its spectrum is the presence of a cw component. We show that, as the wavelength of the cw component approaches that of a Kelly peak, the supermode noise level in the radiofrequency spectrum of the laser can be reduced by 27–32 dB at pulse repetition rates from 275 to 1230 MHz. In addition, we demonstrate the feasibility of tuning the pulse repetition rate with the highest possible accuracy, equal to the fundamental cavity frequency, throughout the range of its variation, up to the highest value of 1760 MHz. Such tuning is possible if the wavelength of the cw component lies in a certain resonance region of the soliton spectrum.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1 supplement","pages":"S18 - S26"},"PeriodicalIF":0.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145636","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
Electric Field Enhancement in Metal-Dielectric Metasurface Based on Periodic Nanocavities 基于周期纳米空腔的金属介电超表面电场增强
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-05-31 DOI: 10.3103/S1068335625600196
A. V. Ivanov, N. V. Bakholdin, M. S. Mikhailov, A. N. Lagarkov, I. A. Ryzhikov, K. N. Afanasev, I. V. Bykov, A. F. Smyk, A. V. Shurygin, A. N. Shalygin, G. Barbillon, A. K. Sarychev
{"title":"Electric Field Enhancement in Metal-Dielectric Metasurface Based on Periodic Nanocavities","authors":"A. V. Ivanov,&nbsp;N. V. Bakholdin,&nbsp;M. S. Mikhailov,&nbsp;A. N. Lagarkov,&nbsp;I. A. Ryzhikov,&nbsp;K. N. Afanasev,&nbsp;I. V. Bykov,&nbsp;A. F. Smyk,&nbsp;A. V. Shurygin,&nbsp;A. N. Shalygin,&nbsp;G. Barbillon,&nbsp;A. K. Sarychev","doi":"10.3103/S1068335625600196","DOIUrl":"10.3103/S1068335625600196","url":null,"abstract":"<p>A new metasurface focusing light at a nanoscale is presented. The metasurface consists of periodic dielectric nanocavities with a top silver nanolayer. When interacting with the light, the metasurface exhibits plasmon resonances, which lead to the local electric field enhancement. The minima in the calculated and experimental reflectance spectra that indicate the light localization on the metasurface are obtained. We propose that the metasurface can be an effective SERS substrate for the detection of various proteins, bacteria, viruses and their derivatives.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1 supplement","pages":"S35 - S42"},"PeriodicalIF":0.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145728","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
The Structure, Shape, and Sizes of Swift Heavy Ion Tracks in Polyethylene 聚乙烯中快速重离子轨道的结构、形状和尺寸
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-05-31 DOI: 10.3103/S1068335625600330
P. A. Babaev, A. E. Volkov
{"title":"The Structure, Shape, and Sizes of Swift Heavy Ion Tracks in Polyethylene","authors":"P. A. Babaev,&nbsp;A. E. Volkov","doi":"10.3103/S1068335625600330","DOIUrl":"10.3103/S1068335625600330","url":null,"abstract":"<p>The results of simulations of amorphous polyethylene irradiations with swift heavy ions are presented. We combined the Monte Carlo TREKIS code and the LAMMPS molecular dynamics package with the AIREBO-M reactive force field to describe the damage along the entire uranium ion trajectories in polyethylene at the atomic level. As a general result, the mismatch between the positions of the maximum energy release and maximum damage on the ion trajectory was found.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 4","pages":"166 - 172"},"PeriodicalIF":0.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171069","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
Determination of the Dose Load in Neutron Capture Therapy Using a Xenon Gamma-Ray Spectrometer 氙伽玛射线谱仪测定中子俘获治疗中的剂量负荷
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-05-31 DOI: 10.3103/S1068335624602097
I. F. Khimmatov, S. E. Ulin
{"title":"Determination of the Dose Load in Neutron Capture Therapy Using a Xenon Gamma-Ray Spectrometer","authors":"I. F. Khimmatov,&nbsp;S. E. Ulin","doi":"10.3103/S1068335624602097","DOIUrl":"10.3103/S1068335624602097","url":null,"abstract":"<p>We discuss a possibility of using a xenon gamma-ray spectrometer (XGRS) based on a cylindrical ionization chamber filled with xenon at a pressure of 40 atm for measuring dose loads during neutron capture therapy (NCT). Advantages of the detector include its resistance to neutron fluxes and a high energy resolution (1.7% at gamma-quanta energies of 662 keV). These characteristics provide the capability to obtain reliable and effective results during NCT. Use is also made of a Pu‒Be neutron source and a pulsed neutron generator.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 4","pages":"179 - 184"},"PeriodicalIF":0.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171065","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
Estimation of Accidental Coincidences during Registration of Extensive Air Showers by the Horizon-T High-Altitude Installation (Tien Shan) 地平线- t高海拔装置（天山）大面积风淋点登记过程中意外巧合的估计
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-05-31 DOI: 10.3103/S1068335624602589
F. K. Gasratov, E. A. Beisembaeva, M. I. Vildanova, V. V. Zhukov, S. B. Shaulov
{"title":"Estimation of Accidental Coincidences during Registration of Extensive Air Showers by the Horizon-T High-Altitude Installation (Tien Shan)","authors":"F. K. Gasratov,&nbsp;E. A. Beisembaeva,&nbsp;M. I. Vildanova,&nbsp;V. V. Zhukov,&nbsp;S. B. Shaulov","doi":"10.3103/S1068335624602589","DOIUrl":"10.3103/S1068335624602589","url":null,"abstract":"<p>The Horizon-T installation is deployed at the Tien Shan High-Altitude Scientific Station of the Lebedev Physical Institute of the Russian Academy of Sciences to study the spatiotemporal characteristics of extensive air showers with energies above 3 PeV (a knee in the cosmic ray spectrum). With real parameters for detecting showers, the database can include low-energy showers of high-intensity cosmic rays that accidentally fall into the measurement interval. The paper presents the results of an experimental assessment of the amplitude spectra of the background of random events.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 4","pages":"147 - 150"},"PeriodicalIF":0.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171878","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
Chaotic Generator of Light Pulses with Multi-Gigahertz Repetition Rate 重复频率为千兆赫的光脉冲混沌发生器
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-05-31 DOI: 10.3103/S1068335624602188
M. V. Gorbunkov, Yu. Ya. Maslova, V. S. Ermakov, Yu. A. Sinichkina
{"title":"Chaotic Generator of Light Pulses with Multi-Gigahertz Repetition Rate","authors":"M. V. Gorbunkov,&nbsp;Yu. Ya. Maslova,&nbsp;V. S. Ermakov,&nbsp;Yu. A. Sinichkina","doi":"10.3103/S1068335624602188","DOIUrl":"10.3103/S1068335624602188","url":null,"abstract":"<p>We consider various implementations of a chaotic light pulse generator based on a solid-state laser synchronized with an external signal. It is shown that optoelectronic control, by selecting a delay of positive and negative feedback loops, makes it possible to generate not only multi-gigahertz sequences of light pulses of constant amplitude, but also to implement the regimes with chaotic behavior of varying complexity, including the logistic map scenario.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 4","pages":"151 - 158"},"PeriodicalIF":0.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171067","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
Some Peculiarities of the Near-Band-Edge Emission from ZnO Crystals Grown on Si Whiskers 硅晶须生长ZnO晶体近带边发射的一些特性
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-05-31 DOI: 10.3103/S1068335625600251
Ch. M. Briskina, V. M. Markushev, L. A. Zadorozhnaya, M. E. Givargizov, V. N. Yashkov, I. S. Volchkov, V. M. Kanevsky
{"title":"Some Peculiarities of the Near-Band-Edge Emission from ZnO Crystals Grown on Si Whiskers","authors":"Ch. M. Briskina,&nbsp;V. M. Markushev,&nbsp;L. A. Zadorozhnaya,&nbsp;M. E. Givargizov,&nbsp;V. N. Yashkov,&nbsp;I. S. Volchkov,&nbsp;V. M. Kanevsky","doi":"10.3103/S1068335625600251","DOIUrl":"10.3103/S1068335625600251","url":null,"abstract":"<p>The nature of the room-temperature near-band-edge emission from ZnO nanocrystals formed on Si substrates with whiskers is analysed. The peculiarities of the emission spectra of ZnO grown either directly on whiskers or on a substrate free of whiskers, as well as of ZnO grown on Si whiskers with Au globules on their tips, are studied and compared. Analysis shows that the phonon replica of free exciton emission makes a significant contribution to the luminescence spectrum of ZnO nanocrystals grown on whiskers, with homogeneous broadening dominating in this case. A comparison of the intensities of near-band-edge emission in the samples with and without gold showed that the presence of the latter enhances the emission by a factor of about 3.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1 supplement","pages":"S113 - S119"},"PeriodicalIF":0.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145639","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
Energy Spectra in Gamma-Electron Emission Events and Registration of Neutron Signal in Thunderstorm Clouds in Tien Shan 天山雷暴云中伽玛电子发射事件的能谱和中子信号的配准
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-05-31 DOI: 10.3103/S1068335625601943
A. L. Shepetov, L. I. Vildanova, V. V. Zhukov, S. A. Mamina, V. A. Ryabov
{"title":"Energy Spectra in Gamma-Electron Emission Events and Registration of Neutron Signal in Thunderstorm Clouds in Tien Shan","authors":"A. L. Shepetov,&nbsp;L. I. Vildanova,&nbsp;V. V. Zhukov,&nbsp;S. A. Mamina,&nbsp;V. A. Ryabov","doi":"10.3103/S1068335625601943","DOIUrl":"10.3103/S1068335625601943","url":null,"abstract":"<p>We report the results of the analysis of the radiations detected at the Tien Shan High-Altitude Scientific Station of the Lebedev Physical Institute in gamma-electron emission (TGE) events during thunderstorms. Differences in the peak radiation intensity are revealed during the simultaneous observation of TGE events at different altitudes. The energy spectra of the gamma radiation in TGE events are determined. In several TGE events, alongside with an increase in the gamma-quantum flux, sharp short-term increases in the count rate are registered inside a thermal-neutron-sensitive scintillator located at the upper detector site, at an altitude of 3900 m, which during thunderstorms turns out to be in the depth of a thundercloud.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 4","pages":"173 - 178"},"PeriodicalIF":0.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171064","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-Ablative Fabrication of Materials for Nanolubricants with Bactericidal Nanoparticles and Study of Their Antiseptic Effect 激光烧蚀制备纳米杀菌纳米润滑剂及其防腐效果研究
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-05-31 DOI: 10.3103/S1068335624602358
I. N. Saraeva, E. R. Tolordava, D. S. Pozdnyakova, S. I. Kudryashov
{"title":"Laser-Ablative Fabrication of Materials for Nanolubricants with Bactericidal Nanoparticles and Study of Their Antiseptic Effect","authors":"I. N. Saraeva,&nbsp;E. R. Tolordava,&nbsp;D. S. Pozdnyakova,&nbsp;S. I. Kudryashov","doi":"10.3103/S1068335624602358","DOIUrl":"10.3103/S1068335624602358","url":null,"abstract":"<p>The paper demonstrates a possibility of reducing the bacterial population using viscous colloidal solutions based on selenium, silver, and copper nanoparticles synthesized by single-stage laser ablation in glycerol and silicone oil.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 4","pages":"185 - 189"},"PeriodicalIF":0.7,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171066","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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