Bulletin of the Lebedev Physics Institute最新文献_第3页

Two-Color Picosecond Raman Laser on Water with Multiple Temporal Compression of the Stokes Pulse in a Collimated Beam 准直光束中斯托克斯脉冲多重时间压缩的水中双色皮秒拉曼激光器

IF 0.6 4区物理与天体物理

Bulletin of the Lebedev Physics Institute Pub Date : 2025-04-03 DOI: 10.3103/S1068335624602498

S. M. Pershin, M. Ya. Grishin, V. N. Lednev, V. A. Orlovich, V. A. Zavozin, E. V. Shashkov, G. A. Boldin

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Enhancement of IR Absorption of Silicon by Its Doping with Sulfur Atoms 硫原子掺杂增强硅的红外吸收

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

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Spontaneous Nucleation of Diamond in a Methane–Hydrogen Microwave Plasma on YAG:Ce Particles 甲烷-氢微波等离子体中YAG:Ce粒子上金刚石的自发成核

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, A. K. Martyanov, S. V. Kuznetsov, I. A. Tiazhelov, S. S. Savin, L. V. Tarala, V. I. Konov","doi":"10.3103/S106833562460205X","DOIUrl":"10.3103/S106833562460205X","url":null,"abstract":"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 ≈106 cm‒2, which is 15‒20% of the deposition density of YAG:Ce particles, are detected by SEM. Luminescence bands from Ce3+ 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.","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 基于生成对抗网络的单像素图像超分辨率

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

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Structure of Arrays of Laterally Associated InGaAs/GaAs Quantum Dots Grown by Molecular Beam Epitaxy with a Bi Surfactant Bi表面活性剂分子束外延生长InGaAs/GaAs量子点阵列的结构

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

引用次数: 0

Realization of the SERS Effect in a Silicon Semiconductor Structure with Fano Resonance 用范诺共振在硅半导体结构中实现SERS效应

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

引用次数: 0

Wide-Aperture Liquid Crystal Electro-Optic Modulator of Carbon Monoxide Laser Radiation 一氧化碳激光辐射大孔径液晶电光调制器

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, 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","doi":"10.3103/S1068335625600135","DOIUrl":"10.3103/S1068335625600135","url":null,"abstract":"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 cm2. 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.","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) 相干辐射在物体内部结构研究中的数值方法发展（一）

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

引用次数: 0

Evolution of Individual Fractions in the Distribution of Metal Nanoparticles during Their Laser Fragmentation 金属纳米颗粒激光破碎过程中单个组分分布的演变

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/S1068335625600081

K. O. Aiyyzhy, E. V. Barmina, P. S. Kuleshov, G. A. Shafeev

引用次数: 0

Features of X-Ray Spectra of Copper in Laser Plasma and a Hybrid X-Pinch 铜在激光等离子体中的x射线光谱特征及混合X-Pinch

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/S1068335625600044

I. N. Tilikin, T. A. Shelkovenko, A. A. Rupasov, A. M. Chekmarev, S. A. Pikuz

{"title":"Features of X-Ray Spectra of Copper in Laser Plasma and a Hybrid X-Pinch","authors":"I. N. Tilikin, T. A. Shelkovenko, A. A. Rupasov, A. M. Chekmarev, S. A. Pikuz","doi":"10.3103/S1068335625600044","DOIUrl":"10.3103/S1068335625600044","url":null,"abstract":"The results of studies of the copper spectra in the soft X-ray range in two fundamentally different (they differ in the heating method) high-temperature dense objects with high energy densities, laser plasma and a hybrid X-pinch, are presented. The uniqueness of the conducted experiments is that both sources were created at the Lebedev Physical Institute, Russian Academy of Sciences (FIAN), and are currently actively operating. The use of the same measuring equipment, which was also invented at FIAN, in these experiments made it possible to completely eliminate the influence of the conditions for observing and recording spectra on the obtained results. Calculations of the spectra have been performed using the radiation–collision model, from which it follows that only if a large number of transitions followed by averaging the obtained numerical results are taken into account, the results can be compared with the experimental data. It has been shown that it is necessary to take not only the plasma temperature and density into account when comparing the theory and particular experimental results, but the plasma size and shape must also be considered. Only in this case, it becomes possible to simulate the experimentally obtained results with satisfactory accuracy. In this case, it is possible to obtain information on the size of the emitting plasma region, which was never done previously.","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12 supplement","pages":"S975 - S982"},"PeriodicalIF":0.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645470","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