发布求助
文献互助 智能选刊 最新文献

Physics of Wave Phenomena最新文献

筛选
英文 中文
Effect of the Delay of Thermal Emission Fronts upon Pulsed Laser–Thermal Excitation of Er2O3 and Ruby 脉冲激光热激发 Er2O3 和红宝石时热发射前沿延迟的影响
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-03-14 DOI: 10.3103/S1541308X24010060
V. M. Marchenko
{"title":"Effect of the Delay of Thermal Emission Fronts upon Pulsed Laser–Thermal Excitation of Er2O3 and Ruby","authors":"V. M. Marchenko","doi":"10.3103/S1541308X24010060","DOIUrl":"10.3103/S1541308X24010060","url":null,"abstract":"<p>The spectra and kinetics of selective and continuum thermodynamically equilibrium emission of electromagnetic radiation from Er<sub>2</sub>O<sub>3</sub> microcrystals and a ruby single crystal in the visible and near-IR spectral regions under laser–thermal excitation by electric-discharge CO<sub>2</sub> lasers at a wavelength λ = 10.6 µm in the cw and pulsed modes have been experimentally investigated. The effect of the delay of continuum emission fronts and intensity peaks relative to laser pulses is explained by the difference in the temperatures of the heated layer and electromagnetic radiation. The delay time of the electromagnetic emission maximum is the characteristic time for establishing thermal equilibrium.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 1","pages":"9 - 14"},"PeriodicalIF":1.1,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155142","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
Inverse Design of One-Dimensional Topological Photonic Systems Using Deep Learning 利用深度学习逆向设计一维拓扑光子系统
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-03-14 DOI: 10.3103/S1541308X24010047
M. El Ghafiani, M. Elaouni, S. Khattou, Y. Rezzouk, M. Amrani, O. Marbouh, M. Boutghatin, A. Talbi, E. H. El Boudouti, B. Djafari-Rouhani
{"title":"Inverse Design of One-Dimensional Topological Photonic Systems Using Deep Learning","authors":"M. El Ghafiani,&nbsp;M. Elaouni,&nbsp;S. Khattou,&nbsp;Y. Rezzouk,&nbsp;M. Amrani,&nbsp;O. Marbouh,&nbsp;M. Boutghatin,&nbsp;A. Talbi,&nbsp;E. H. El Boudouti,&nbsp;B. Djafari-Rouhani","doi":"10.3103/S1541308X24010047","DOIUrl":"10.3103/S1541308X24010047","url":null,"abstract":"<p>We demonstrate a novel approach to inversely design one-dimensional (1D) photonic stubbed systems with targeted topological properties by leveraging the power of deep learning. The process involves developing a data-driven model to accurately predict the geometric parameters of the photonic system based on a label vector that encodes the targeted topological properties. A tandem network comprising an inverse network connected to a pre-trained forward network is trained to efficiently learn the intricate relationship between the system’s topological properties and the corresponding geometry. After training, the model is shown to effectively perform the inverse design task. The study’s outcomes give new perspectives for the design of topological photonic systems.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 1","pages":"48 - 55"},"PeriodicalIF":1.1,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155319","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
Separation Methods of Laser-Induced Carbon Chains in Graphite-Ethanol Suspensions 石墨-乙醇悬浮液中激光诱导碳链的分离方法
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-03-14 DOI: 10.3103/S1541308X24010023
K. K. Ashikkalieva, V. V. Kononenko, N. R. Arutyunyan, E. V. Zavedeev, E. V. Akhlyustina, A. L. Vasiliev, V. I. Konov
{"title":"Separation Methods of Laser-Induced Carbon Chains in Graphite-Ethanol Suspensions","authors":"K. K. Ashikkalieva,&nbsp;V. V. Kononenko,&nbsp;N. R. Arutyunyan,&nbsp;E. V. Zavedeev,&nbsp;E. V. Akhlyustina,&nbsp;A. L. Vasiliev,&nbsp;V. I. Konov","doi":"10.3103/S1541308X24010023","DOIUrl":"10.3103/S1541308X24010023","url":null,"abstract":"<p>Irradiation of carbon-containing liquids by ultrashort laser pulses makes it possible to synthesize linear carbon chains (polyynes), which are of great practical interest for optics and electronics. To obtain homogeneous suspensions of polyynes, it is important to study the stability of synthesized structures and search for efficient methods of separating polyynes from laser processing byproducts. In this study polyynes were synthesized using irradiation of graphite suspensions in ethanol by a picosecond laser source (τ = 10 ps, <i>f</i> = 10 kHz, λ = 1064 nm). The processed suspensions contained polyynes of different length (C<sub>8</sub>H<sub>2</sub>–C<sub>16</sub>H<sub>2</sub>) and some other carbon components. The stability of polyynes was investigated, and a systematic comparison of the results of separating polyynes from other components of irradiated suspensions using filtering, sedimentation, and centrifugation was performed. The optical properties of synthesized polyynes were investigated by optical spectroscopy. The laser processing byproducts were studied using transmission electron microscopy.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 1","pages":"1 - 8"},"PeriodicalIF":1.1,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155323","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
On Local and Integral Forms of Energy Conservation Laws in the Scattering Theory 论散射理论中能量守恒定律的局部和积分形式
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-03-14 DOI: 10.3103/S1541308X24010011
L. A. Apresyan, T. V. Vlasova, V. I. Krasovskii
{"title":"On Local and Integral Forms of Energy Conservation Laws in the Scattering Theory","authors":"L. A. Apresyan,&nbsp;T. V. Vlasova,&nbsp;V. I. Krasovskii","doi":"10.3103/S1541308X24010011","DOIUrl":"10.3103/S1541308X24010011","url":null,"abstract":"<p>Consideration is given to various forms of energy balance relations that describe the influence of the scatterer on radiation of given currents and are connected with the classical description of the Purcell factor and with the optical theorem. It is shown that these relations hold not only integrally but also locally, i.e., for integrands. A transition is described from the ordinary integral form of the scattering problem (of the type of the Lippmann–Schwinger equation) to the system of two equations for the Hermitian and anti-Hermitian parts of the scattering T-operator, so that for the former the diagonal matrix element corresponding to an arbitrary incident wave directly gives the general form of the optical theorem. A particular case is also described, which concerns nonradiating currents in the absence of the scatterer with their radiation loss being only due to the presence of a scatterer.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 1","pages":"19 - 26"},"PeriodicalIF":1.1,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155147","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
Generation of High-Order Harmonics by Gallium Ions in Intense Laser Pulse 强激光脉冲中镓离子产生的高阶谐波
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2023-12-28 DOI: 10.3103/S1541308X23060079
A. I. Magunov, V. V. Strelkov, S. N. Yudin
{"title":"Generation of High-Order Harmonics by Gallium Ions in Intense Laser Pulse","authors":"A. I. Magunov,&nbsp;V. V. Strelkov,&nbsp;S. N. Yudin","doi":"10.3103/S1541308X23060079","DOIUrl":"10.3103/S1541308X23060079","url":null,"abstract":"<p>The spectrum of high-order harmonics generated in interaction of an intense femtosecond laser pulse with a singly charged gallium ion is theoretically investigated. The results of the calculations reveal enhancement of odd harmonics that are in resonance with the frequency of the transition from the ground state to the odd autoionizing state 3d<sup>9</sup>4s<sup>2</sup>4p <sup>1</sup>P<sub>1</sub> and harmonics that correspond to the multiphoton resonance with the even autoionizing states 3d<sup>10</sup>4p5p <sup>1</sup>S<sub>0</sub> and <sup>1</sup>D<sub>2</sub> (dark states) and are one laser frequency away from them. The effect of resonant enhancement of harmonics was earlier observed in experiments on gallium targets with a plasma plume.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"31 6","pages":"418 - 426"},"PeriodicalIF":1.1,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139055764","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
Application of Warping Transform for the Analysis of the Acoustic Mode Coupling due to a Local Inhomogeneity in Shallow Water 应用翘曲变换分析浅水局部非均质性引起的声学模式耦合
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2023-12-28 DOI: 10.3103/S1541308X23060067
A. A. Lunkov, M. A. Shermeneva
{"title":"Application of Warping Transform for the Analysis of the Acoustic Mode Coupling due to a Local Inhomogeneity in Shallow Water","authors":"A. A. Lunkov,&nbsp;M. A. Shermeneva","doi":"10.3103/S1541308X23060067","DOIUrl":"10.3103/S1541308X23060067","url":null,"abstract":"<p>The possibility of observing the mode coupling effect, caused by a local inhomogeneity, is studied for a long-range stationary acoustic track between a single sound source and a single receiver in a shallow-water waveguide. This effect manifests itself in the form of oscillations of normal mode amplitudes in the frequency domain and can be used to localize inhomogeneities. An analytical formula linking the oscillation period of the first-mode amplitude with the distance to the inhomogeneity is proposed. Numerical experiments with a model inhomogeneity in the form of a local bottom rise show that the frequency dependence of the mode amplitude can be selected not only at a vertical line array but also at a single receiver, with the use of warping transform. In this case, the receiver depth should correspond to zero of the second-mode vertical profile. The dependence of the mode amplitude oscillations on the local inhomogeneity size is discussed.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"31 6","pages":"396 - 405"},"PeriodicalIF":1.1,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139051229","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
Phase Invariants of Vector–Scalar Fields Excited in the Shallow Sea by Multipole Sources 多极源在浅海激发的矢量-标量场的相位不变性
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2023-12-28 DOI: 10.3103/S1541308X23060055
G. N. Kuznetsov, A. N. Stepanov
{"title":"Phase Invariants of Vector–Scalar Fields Excited in the Shallow Sea by Multipole Sources","authors":"G. N. Kuznetsov,&nbsp;A. N. Stepanov","doi":"10.3103/S1541308X23060055","DOIUrl":"10.3103/S1541308X23060055","url":null,"abstract":"<p>The concept of a phase invariant (PI), introduced in our previous studies, is used to describe the sound-field phase distribution in an underwater waveguide in the distance–frequency plane. This concept is similar to the classical waveguide Chuprov invariant (ChI), which specifies the slopes of constant-field intensity lines in the same plane. The PIs of vector–scalar fields excited by multipole sources are investigated for the first time in this paper. It is shown that, as well as in the case of a monopole source, PI is a stable characteristic of a sound field. It is demonstrated by numerical simulation that the PI value in shallow water barely depends on the source directional pattern, the path length, the frequency of emitted signal, and the waveguide characteristics. Significant deviations of PI from its basic value (–1) are observed only in the vicinity of interference minima (in the phase-dislocation zones).</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"31 6","pages":"371 - 382"},"PeriodicalIF":1.1,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139051627","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
Transition from Regular to Mach Reflection of Shock Waves in Laterally Colliding Laser-Produced Plasmas 侧面碰撞激光产生的等离子体中冲击波从常规反射到马赫反射的转变
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2023-12-28 DOI: 10.3103/S1541308X23060092
S. Shilpa, Pramod Gopinath
{"title":"Transition from Regular to Mach Reflection of Shock Waves in Laterally Colliding Laser-Produced Plasmas","authors":"S. Shilpa,&nbsp;Pramod Gopinath","doi":"10.3103/S1541308X23060092","DOIUrl":"10.3103/S1541308X23060092","url":null,"abstract":"<p>Shock wave reflections in laterally colliding laser-produced aluminum plasmas at 10<sup>–1</sup> and 1 mbar argon ambient has been studied using fast imaging technique. In 10<sup>–1</sup> mbar pressure regime, the two shock fronts interact to form an intense interaction region. In the case of 1 mbar pressure regime, at early stages of plume expansion, individual shock fronts interact to form a collision front resulting in regular reflection of shock waves. At later times, the collision front split and a channel-like structure was observed and the width of the channel increases with time which is the cause of Mach reflection of shock waves. Incident angle and Mach stem length were measured from ICCD images, and it is found that Mach stem length increases with angle of incidence and time delay. Thus, the transition from regular reflection to Mach reflection of shock waves is reported in this paper.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"31 6","pages":"434 - 441"},"PeriodicalIF":1.1,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139051662","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
Physical Problems of Direction Finding in the Deep Sea 深海测向的物理问题
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2023-12-28 DOI: 10.3103/S1541308X2306002X
S. P. Aksenov, G. N. Kuznetsov
{"title":"Physical Problems of Direction Finding in the Deep Sea","authors":"S. P. Aksenov,&nbsp;G. N. Kuznetsov","doi":"10.3103/S1541308X2306002X","DOIUrl":"10.3103/S1541308X2306002X","url":null,"abstract":"<p>The methods of direction finding for an immobile point source have been analyzed to obtain initial data for constructing acoustic distance measuring and tomography algorithms as applied to the deep sea. It is found that, to obtain reliable bearing estimates in the near- and far-field acoustic illumination zones (NFAIZ and FFAIZ), both in summer and in winter, it is sufficient to use the values of effective phase velocity (EPV) or effective group velocity (EGV) of sound, which are close to the measured speed of sound in water. However, in the shadow zone (SZ) under summer conditions, the effective velocities differ significantly from the speed of sound in water, and their values depend on distance, complicating additionally the solution of this problem. Therefore, to estimate the EPV and EGV, one must have information about the distance to the source. It is shown that application of vertically oriented antennas makes it possible to estimate the distance in the SZ and calculate independently the EPV and EGV values for each distance, which is necessary for direction finding. Thus, under summer conditions, conventional signal direction finding is performed in acoustic illumination zones, whereas in the SZ, in the case of simultaneous application of horizontal and vertical antennas, one must previously determine the distance to the source for calculating the bearing. The shadow zone is abscent in winter; thus, to phase a horizontal antenna on almost all distances, one can use the average speed of sound in water, but the antenna range must be determined.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"31 6","pages":"383 - 395"},"PeriodicalIF":1.1,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139051228","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
Evaluation of Cr2+ Ions Absorption Cross-Section in Zn1–xMnxSe Solid Solutions by Nonlinear Transmission Measurements 通过非线性透射测量评估 Zn1-xMnxSe 固溶体中 Cr2+ 离子的吸收截面
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2023-12-28 DOI: 10.3103/S1541308X23060031
M. E. Doroshenko, K. A. Pierpoint, A. Říha, H. Jelínková
{"title":"Evaluation of Cr2+ Ions Absorption Cross-Section in Zn1–xMnxSe Solid Solutions by Nonlinear Transmission Measurements","authors":"M. E. Doroshenko,&nbsp;K. A. Pierpoint,&nbsp;A. Říha,&nbsp;H. Jelínková","doi":"10.3103/S1541308X23060031","DOIUrl":"10.3103/S1541308X23060031","url":null,"abstract":"<p>The absorption cross-section of Cr<sup>2+</sup> ions in a range of cubic Zn<sub>1–<i>x</i></sub>Mn<sub><i>x</i></sub>Se (<i>x</i> = 0–0.3) solid solutions was determined using nonlinear transmission measurements. The maximum absorption cross-section of about 1.04 × 10<sup>–18</sup> cm<sup>2</sup> was determined and shown to be practically independent of the Mn content (<i>x</i>) in the solid solution.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"31 6","pages":"412 - 417"},"PeriodicalIF":1.1,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139055755","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信