Bulletin of the Lebedev Physics Institute最新文献_第6页

Light Pressure on a Chiral Spherical Particle in an Evanescent Field: Analytical Solution 手性球形粒子在倏逝场中的光压：解析解

IF 0.6 4区物理与天体物理

Bulletin of the Lebedev Physics Institute Pub Date : 2026-08-15 DOI: 10.3103/S1068335626600737

D. V. Guzatov

引用次数: 0

Laser Beam Narrowing outside the Degenerate Cavity 简并腔外激光束变窄

IF 0.6 4区物理与天体物理

Bulletin of the Lebedev Physics Institute Pub Date : 2026-08-15 DOI: 10.3103/S1068335626600348

A. L. Koromyslov, V. F. Pevtsov, K. V. Prokhorchuk, I. M. Tupitsyn, E. A. Cheshev

引用次数: 0

Photoinduced Crystallization of Amorphous GeTe and Sb2Te3 Films by Laser Beams of Different Structures 不同结构激光束光致非晶态GeTe和Sb2Te3薄膜结晶

IF 0.6 4区物理与天体物理

Bulletin of the Lebedev Physics Institute Pub Date : 2026-08-15 DOI: 10.3103/S1068335625604261

Ya. S. Lebedeva, P. A. Smirnov, I. A. Budagovsky, A. V. Romashkin, K. G. Nikitin, I. V. Sagunova, V. B. Pestova, A. A. Sherchenkov, P. I. Lazarenko, M. P. Smayev

{"title":"Photoinduced Crystallization of Amorphous GeTe and Sb2Te3 Films by Laser Beams of Different Structures","authors":"Ya. S. Lebedeva, P. A. Smirnov, I. A. Budagovsky, A. V. Romashkin, K. G. Nikitin, I. V. Sagunova, V. B. Pestova, A. A. Sherchenkov, P. I. Lazarenko, M. P. Smayev","doi":"10.3103/S1068335625604261","DOIUrl":"10.3103/S1068335625604261","url":null,"abstract":"Phase-change materials are widely employed in nanotechnology and microelectronics due to their ability to reversibly switch between amorphous and crystalline states, thereby altering their electrical and optical properties. The ternary compound Ge2Sb2Te5, the most studied and widely used phase-change material, consists of two binary tellurides, GeTe and Sb2Te3, each of which is itself a promising phase-change compound. This paper investigates the modification of thin amorphous GeTe and Sb2Te3 films by continuous-wave laser beams with different spatial structures, including Hermite–Gaussian modes HG00 and HG01, vector beams, and an optical vortex. The irradiated regions are analyzed based on brightness assessments of optical images and Raman spectroscopy, making it possible to conclude that beams with an annular intensity profile are promising for forming an optimal heating profile and achieving more uniform crystallization compared with HG00. For all beam types, laser-induced structural transformation significantly manifested in the Raman spectra, are accompanied by a pronounced change in optical contrast (reflectivity) for germanium telluride, whereas considerably smaller changes are abserved for antimony telluride.","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"53 1","pages":"S65 - S76"},"PeriodicalIF":0.6,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752337","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

Polarization-Luminescence Analysis of Orientation Order in Mechanically Stressed Polyurethane 机械应力聚氨酯中取向顺序的偏振-发光分析

IF 0.6 4区物理与天体物理

Bulletin of the Lebedev Physics Institute Pub Date : 2026-07-22 DOI: 10.3103/S1068335625604662

V. V. Kesaev, V. A. Barbashov

引用次数: 0

Experimental Study of Nonlinear Absorption of Ultrashort Laser Pulses in Fused Silica 熔融石英中超短激光脉冲非线性吸收的实验研究

IF 0.6 4区物理与天体物理

Bulletin of the Lebedev Physics Institute Pub Date : 2026-07-22 DOI: 10.3103/S1068335626600531

Yu. S. Gulina, J. Zhu, A. E. Rupasov, A. V. Bogatskaya, M. P. Verteletskaya, A. M. Popov, S. I. Kudryashov

引用次数: 0

Geometric Characteristics of Polymer Refractive X-Ray Lenses Fabricated by Two-Photon Polymerization: A Confocal Laser Scanning Microscopy Study 双光子聚合制备的聚合物折射x射线透镜的几何特性：共聚焦激光扫描显微镜研究

IF 0.6 4区物理与天体物理

Bulletin of the Lebedev Physics Institute Pub Date : 2026-07-22 DOI: 10.3103/S1068335626600555

Rilond Pattia Matital, D. A. Shcherbakov, D. A. Kolymagin, A. G. Vitukhnovsky, A. V. Gritsienko

{"title":"Geometric Characteristics of Polymer Refractive X-Ray Lenses Fabricated by Two-Photon Polymerization: A Confocal Laser Scanning Microscopy Study","authors":"Rilond Pattia Matital, D. A. Shcherbakov, D. A. Kolymagin, A. G. Vitukhnovsky, A. V. Gritsienko","doi":"10.3103/S1068335626600555","DOIUrl":"10.3103/S1068335626600555","url":null,"abstract":"The geometric accuracy of refractive elements is crucial for the optimal focusing performance of compound refractive X-ray lenses. Achieving precise control of lens geometry during two-photon polymerization direct laser writing (TPP DLW) iremains challenging due to the complex dependence of the fabrication process on printing parameters and the limited availability of non-destructive methods for internal structural characterization. This work addresses the fabrication of arrays of three-dimensional polymer parabolic lenses with curvature radii at the apex of the parabola R = 2 and 5 μm from a PETA/4Met-BAC photocomposition at laser powers ranging from 4 to 9 mW, and the investigation of their morphology by confocal laser scanning microscopy (CLSM). It is shown that CLSM enables nondestructive three-dimensional analysis of the structures and accurate assessment of geometric deviations caused by polymer shrinkage. All structures exhibited isotropic shrinkage, the magnitude of which depended on both the design radius of curvature and the laser power. For lenses with R = 5 μm, the shrinkage ranged from 5.3 to 6.0%, whereas for lenses with R = 2 μm it increased to 8.0% at the lowest laser power. Reducing the laser printing power decreases the voxel size and significantly improved geometric fidelity: the relative deviation of the measured radius from the design value decreases from 34 to 18% (R = 5 μm). CLSM combined with quantitative image analysis is an effective tool for optimizing TPP-DLW fabrication parameters and for quality control of X-ray optical elements.","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"53 6","pages":"246 - 252"},"PeriodicalIF":0.6,"publicationDate":"2026-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553278","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

Nonlinear Optical Properties of Thin-Film Composites of PbS Colloidal Quantum Dots and Poly(2-Dimethylamino)Ethyl Methacrylate PbS胶体量子点与聚（2-二甲氨基）甲基丙烯酸乙酯薄膜复合材料的非线性光学性质

IF 0.6 4区物理与天体物理

Bulletin of the Lebedev Physics Institute Pub Date : 2026-07-22 DOI: 10.3103/S106833562660021X

A. I. Zvyagin, O. V. Ovchinnikov, M. S. Smirnov, I. G. Grevtseva, K. S. Chirkov, S. V. Aslanov

引用次数: 0

Superalloying of Monocrystalline Silicon by Laser Induced Forward Transfer 单晶硅激光诱导正向转移高温合金化研究

IF 0.6 4区物理与天体物理

Bulletin of the Lebedev Physics Institute Pub Date : 2026-07-22 DOI: 10.3103/S1068335626600166

E. V. Ulturgasheva, P. A. Danilov, E. V. Kuzmin, A. A. Nastulyavichus, P. A. Chizhov, V. V. Bulgakova, A. A. Ushakov, S. P. Babina, S. I. Kudryashov

引用次数: 0

Space-Time Correlations in Developed Turbulence 发达湍流中的时空相关性

IF 0.6 4区物理与天体物理

Bulletin of the Lebedev Physics Institute Pub Date : 2026-07-22 DOI: 10.3103/S1068335626600518

A. V. Kopyev, A. S. Ilyin, V. A. Sirota, K. P. Zybin

引用次数: 0

Study on Cu-64 Production Using Ni-64 and Zn-68 Targets 用Ni-64和Zn-68为靶材生产Cu-64的研究

IF 0.6 4区物理与天体物理

Bulletin of the Lebedev Physics Institute Pub Date : 2026-07-01 DOI: 10.3103/S1068335625603619

Qiuying Liang, Xunchao Zhang, Guanghui Yang, Qiong Yang, Fen Fu

{"title":"Study on Cu-64 Production Using Ni-64 and Zn-68 Targets","authors":"Qiuying Liang, Xunchao Zhang, Guanghui Yang, Qiong Yang, Fen Fu","doi":"10.3103/S1068335625603619","DOIUrl":"10.3103/S1068335625603619","url":null,"abstract":"This study employed the Monte Carlo method to simulate the production of 64Cu using a low-energy proton cyclotron, which is essential for identifying cost-effective production strategies. Two target materials, 64Ni and 68Zn metals, were considered. The SRIM code was used to calculate the proton ranges in these two target materials. Based on the available experimental cross‑section data and the physical models embedded in PHITS, the effects of target material type, target thickness, and incident angle of the proton beam on the target surface on the production yield of 64Cu and associated impurities were also analyzed using the PHITS software. The results indicated that proton-induced reactions on 64Ni and 68Zn targets can achieve desirable yields of 64Cu within incident proton energy ranges of 12  → 9 MeV (for 64Ni target) and 28  → 25 MeV (for 68Zn target), respectively. Appropriately reducing the incident angle of the proton beam on the target surface can improve the utilization efficiency of the proton beam. Consequently, under the same target thickness, the yield of 64Cu is increased while the impurity yields remain relatively stable. Furthermore, as the incident angle decreases, the optimal target thickness required to achieve the maximum 64Cu yield is correspondingly reduced.","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"53 5","pages":"214 - 223"},"PeriodicalIF":0.6,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357782","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