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Physics of Wave Phenomena最新文献

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Method for Analysis of Asymmetric Spectra Based on the Information Entropy Model 基于信息熵模型的不对称光谱分析方法
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-07-08 DOI: 10.3103/S1541308X24700171
V. I. Kuzmin, A. A. Paramonov, D. L. Tytik, O. V. Souvorova
{"title":"Method for Analysis of Asymmetric Spectra Based on the Information Entropy Model","authors":"V. I. Kuzmin,&nbsp;A. A. Paramonov,&nbsp;D. L. Tytik,&nbsp;O. V. Souvorova","doi":"10.3103/S1541308X24700171","DOIUrl":"10.3103/S1541308X24700171","url":null,"abstract":"<p>The possibility is considered of using asymmetric distributions to analyze emission/absorption spectra, which enables revealing the structure of polymodal spectra. A necessary condition for existence of the spectrum is a nonnegative relative increment of tis amplitude (emission/absorption intensity). The use of asymmetric distributions in spectrum shape simulation involves a certain type of differential equation, where the left-hand side is a relative amplitude increment and the right-hand side is the decreasing nonlinear function. As a result, a model is obtained, in which the signal amplitude increment is defined by classical results of statistical physics (L. Boltzmann, M Planck) and information theory (C. Shannon) that correspond to the limited growth model (Gompertz model). On the basis of the anamorphism of this model, relaxation parameters of the spectrum are determined, which are treated as objective characteristics of emission/absorption spectra. The result is illustrated by the analysis of the luminescence spectrum of deionized water.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 3","pages":"203 - 208"},"PeriodicalIF":1.1,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141571952","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 Diode Laser with Vertical Cavity 带垂直腔的宽孔径二极管激光器
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-07-08 DOI: 10.3103/S1541308X24700237
V. V. Bezotosnyi, A. P. Bogatov, A. E. Drakin, G. T. Mikaelyan
{"title":"Wide-Aperture Diode Laser with Vertical Cavity","authors":"V. V. Bezotosnyi,&nbsp;A. P. Bogatov,&nbsp;A. E. Drakin,&nbsp;G. T. Mikaelyan","doi":"10.3103/S1541308X24700237","DOIUrl":"10.3103/S1541308X24700237","url":null,"abstract":"<p>A new type of diode laser with a scalable (fundamentally unlimited) aperture for the output optical beam has been proposed and calculated. Such an aperture can be implemented due to the use of a vertical cavity with one of the mirrors in the form of a surface diffraction grating. The threshold current density and differential efficiency of the proposed laser are calculated for the material parameters characteristic of the InGaAs/AlGaAs heterostructure and the spectral range at 0.98 µm.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 3","pages":"249 - 255"},"PeriodicalIF":1.1,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141571958","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
Geometric Structure of an Aqueous Solution of Paramagnetic Nanoparticles in the Presence of a Magnetic Field 顺磁纳米粒子水溶液在磁场作用下的几何结构
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-07-08 DOI: 10.3103/S1541308X24700122
E. N. Tsiok, S. A. Bobkov, E. A. Gaiduk, E. E. Tareyeva, Yu. D. Fomin, V. N. Ryzhov
{"title":"Geometric Structure of an Aqueous Solution of Paramagnetic Nanoparticles in the Presence of a Magnetic Field","authors":"E. N. Tsiok,&nbsp;S. A. Bobkov,&nbsp;E. A. Gaiduk,&nbsp;E. E. Tareyeva,&nbsp;Yu. D. Fomin,&nbsp;V. N. Ryzhov","doi":"10.3103/S1541308X24700122","DOIUrl":"10.3103/S1541308X24700122","url":null,"abstract":"<p>Computer simulation of two-dimensional colloidal systems, in which interactions between particles are induced and controlled by an external rotating magnetic field, has been performed. The effective interaction potential of particles, along with the conventional pair potential, includes also three-particle interaction. It is shown that one of the parameters of the potential—field precession angle—radically changes the character of particle interaction and the phase diagram. In particular, at small angles the system behaves like a two-dimensional system with a purely repulsive soft-disk potential, whereas at large angles it behaves like a generalized Lennard-Jones system with the (<i>nm</i>)-potential; the presence of the three-particle part of potential reduces the temperature of the gas–liquid critical point. At intermediate field precession angles the phase diagram contains melting lines of triangular crystals of high and low density, between which a phase with a Kagome lattice was found. Our results serve an important guide for future experiments and simulation of colloidal systems, as well as for solving many problems in the fields of “soft” matter, physical chemistry, chemical physics, photonics, and materials science</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 3","pages":"171 - 177"},"PeriodicalIF":1.1,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141571947","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
A Protocol of Measurements Providing Direct, Complete and Single-Valued Recover of All a Priory Unknown Parameters of Polarization Biphoton Qutrits 提供直接、完整和单值恢复偏振双光子质子所有未知参数的测量协议
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-07-08 DOI: 10.3103/S1541308X24700195
M. V. Fedorov, S. S. Mernova, K. V. Sliporod
{"title":"A Protocol of Measurements Providing Direct, Complete and Single-Valued Recover of All a Priory Unknown Parameters of Polarization Biphoton Qutrits","authors":"M. V. Fedorov,&nbsp;S. S. Mernova,&nbsp;K. V. Sliporod","doi":"10.3103/S1541308X24700195","DOIUrl":"10.3103/S1541308X24700195","url":null,"abstract":"<p>We suggest and describe the protocol of measurements providing completely probabilistic representation of all parameters of polarization biphoton qutrits, i.e. providing explicit expressions for all parameters of qutrits via the probabilities of getting those or other results in measurements.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 3","pages":"220 - 226"},"PeriodicalIF":1.1,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141571954","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 Analysis of the Evaporation Dynamics of Water Spin Isomers 对水自旋异构体蒸发动力学的激光分析
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-07-08 DOI: 10.3103/S1541308X24700225
E. V. Stepanov, V. K. Konyukhov, S. M. Pershin
{"title":"Laser Analysis of the Evaporation Dynamics of Water Spin Isomers","authors":"E. V. Stepanov,&nbsp;V. K. Konyukhov,&nbsp;S. M. Pershin","doi":"10.3103/S1541308X24700225","DOIUrl":"10.3103/S1541308X24700225","url":null,"abstract":"<p>The content of H<sub>2</sub>O spin isomers in saturated vapor during its fast evaporation from the surface of water in a cell at room temperature has been analyzed. The experiment was performed using the two-compartment scheme of simultaneous fast laser analysis of the concentration ratio of H<sub>2</sub>O <i>ortho</i>- and <i>para</i>-isomers in saturated vapor in two analytical cells. One of these cells cointained water and its saturated vapor. The other was previously evacuated, and saturated vapor from the first cell was fed to it. Simultaneous analysis of the relative content of <i>ortho</i>- and <i>para</i>-water molecules during gas probe sampling, which lasted about 0.8 s, was performed with a rate of 10 measurements per second using a two-channel spectrophotometer based on tunable diode lasers (TDLs). The spectral range near 7355 cm<sup>–1</sup>, where the <i>ortho</i>- and <i>para</i>-Н<sub>2</sub>О absorption lines are closely located, was chosen for analysis. During the fast evaporation, which accompanied saturated vapor sampling, the evaporating vapor was found to be enriched with <i>ortho</i>-H<sub>2</sub>O isomer, whose content amounted to ~20% of the equilibrium value 3 : 1. An important fact is that this result is indicative of possible enhanced mobility and the absence of hydrogen bonds for some of <i>ortho</i>-Н<sub>2</sub>О molecules in the surface water layer, which is consistent with the known fact that water vapor transmitted through porous materials becomes enriched with <i>ortho</i>-H<sub>2</sub>O isomers.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 3","pages":"241 - 248"},"PeriodicalIF":1.1,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141571960","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
Numerical Modeling of Tunable Reflection Scattering Angle Control Based on Ge2Sb2Te5 Phase Change Metamaterials 基于 Ge2Sb2Te5 相变超材料的可调反射散射角控制数值建模
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-04-27 DOI: 10.3103/S1541308X24700055
Jianfeng Xu, Lizhen Xu, Fuhai Liu, Xin Huang, Bo Fang, Xufeng Jing
{"title":"Numerical Modeling of Tunable Reflection Scattering Angle Control Based on Ge2Sb2Te5 Phase Change Metamaterials","authors":"Jianfeng Xu,&nbsp;Lizhen Xu,&nbsp;Fuhai Liu,&nbsp;Xin Huang,&nbsp;Bo Fang,&nbsp;Xufeng Jing","doi":"10.3103/S1541308X24700055","DOIUrl":"10.3103/S1541308X24700055","url":null,"abstract":"<p>To reduce the ohmic loss of the encoding metasurface and achieve continuous control of the scattering angle larger than 70°, we numerically study all dielectric reflective metasurface in the mid-infrared waveband. Free control of the deflection angle of the far-field scattered beam is achieved. The unit structure designed consists of the Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub> phase change material and the substrate. The phase difference between each two-unit structures is 90° and has high reflectivity in the working band. We can arrange the four units to construct metasurfaces with different coding sequences and perform Fourier convolution operations on the metasurfaces with different coding sequences to obtain flexible control of the reflected beam. The reflection characteristics of the coding sequence in the crystalline and amorphous states of the Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub> phase change material are demonstrated. The abnormal reflection angle phenomenon of the simulated structure was theoretically analyzed.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 2","pages":"105 - 116"},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140801456","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
Raman Evaluation of the Crystallinity Degree of Poly(L-Lactide)-Based Materials 拉曼评估聚（L-乳酸）基材料的结晶度
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-04-27 DOI: 10.3103/S1541308X24700080
S. O. Liubimovskii, V. S. Novikov, D. D. Vasimov, S. M. Kuznetsov, E. A. Sagitova, P. V. Dmitryakov, A. V. Bakirov, N. G. Sedush, S. N. Chvalun, M. N. Moskovskiy, G. Yu. Nikolaeva
{"title":"Raman Evaluation of the Crystallinity Degree of Poly(L-Lactide)-Based Materials","authors":"S. O. Liubimovskii,&nbsp;V. S. Novikov,&nbsp;D. D. Vasimov,&nbsp;S. M. Kuznetsov,&nbsp;E. A. Sagitova,&nbsp;P. V. Dmitryakov,&nbsp;A. V. Bakirov,&nbsp;N. G. Sedush,&nbsp;S. N. Chvalun,&nbsp;M. N. Moskovskiy,&nbsp;G. Yu. Nikolaeva","doi":"10.3103/S1541308X24700080","DOIUrl":"10.3103/S1541308X24700080","url":null,"abstract":"<p>We carried out a Raman study of a series of poly(L-lactide) (PLLA) samples annealed for different periods of time and therefore having different crystallinity degree. We compared the results with our recent study of the series of poly(L-lactide-co-ε-caprolactone) (PLCL) copolymers with the ε-caprolactone (CL) content ranging from 5 to 30 mol %. X-ray diffraction (XRD) analysis showed that the crystallinity degree of the analyzed PLLA-based materials is in the range of 0–86%. We suggest using the ratio of the peak intensities of the PLLA Raman bands at 411 and 874 cm<sup>–1</sup> to evaluate the crystallinity degree of PLLA homopolymers as well as PLLA blocks in the PLCL copolymers. This ratio does not depend on the CL content in the copolymers, it strongly depends on the crystallinity degree of PLLA (PLLA blocks in the PLCL copolymers) and it is a linear function of the crystallinity degree, measured by XRD analysis. We carried out quantum chemical calculations of the optimized geometries and Raman spectra of PLLA oligomers in the conformation of helix 10<sub>3</sub> with the number of monomeric units from 5 to 12. The results of the calculations revealed that the ratio of the intensities of the bands at 411 and 874 cm<sup>–1</sup> weakly depends on the oligomer length for the number of the PLLA monomeric units more than 7.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 2","pages":"140 - 149"},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140801480","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
Features of Magnetooptical Spectra of the Transverse Kerr Effect in CoPt Nanostructures CoPt 纳米结构中横向克尔效应的磁光光谱特征
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-04-27 DOI: 10.3103/S1541308X24700109
A. N. Yurasov, M. M. Yashin, D. A. Saifulina, T. N. Bakhvalova
{"title":"Features of Magnetooptical Spectra of the Transverse Kerr Effect in CoPt Nanostructures","authors":"A. N. Yurasov,&nbsp;M. M. Yashin,&nbsp;D. A. Saifulina,&nbsp;T. N. Bakhvalova","doi":"10.3103/S1541308X24700109","DOIUrl":"10.3103/S1541308X24700109","url":null,"abstract":"<p>The results of theoretical investigation of magnetooptical properties of CoPt-based nanostructures are presented. Within the effective medium method, namely, the symmetrized Maxwell Garnett approximation, spectral dependences of the transverse effect are calculated for ferromagnetic granules with allowance for the size effect. The simulation showed good agreement of the experimental and theoretical data in the visible region of the spectrum.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 2","pages":"160 - 163"},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140801504","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 and Experimental Study of the Electronic and Optical Properties of ZnIn2Se4 Crystals ZnIn2Se4 晶体电子和光学特性的理论与实验研究
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-04-27 DOI: 10.3103/S1541308X24700092
I. A. Mamedova, Z. A. Jahangirli, E. G. Alizade, R. G. Seyidov, T. G. Mammadov, N. A. Abdullayev
{"title":"Theoretical and Experimental Study of the Electronic and Optical Properties of ZnIn2Se4 Crystals","authors":"I. A. Mamedova,&nbsp;Z. A. Jahangirli,&nbsp;E. G. Alizade,&nbsp;R. G. Seyidov,&nbsp;T. G. Mammadov,&nbsp;N. A. Abdullayev","doi":"10.3103/S1541308X24700092","DOIUrl":"10.3103/S1541308X24700092","url":null,"abstract":"<p>The electronic properties of ZnIn<sub>2</sub>Se<sub>4</sub> crystals have been studied experimentally by spectral ellipsometry and theoretically (from the first principles) using the density functional theory (DFT). Ellipsometric studies in the energy range of 0.7–6.5 eV made it possible to determine the imaginary and real parts of the dielectric function and optical conductivity, as well as the dispersion of the refractive indices, extinction coefficients, and absorption coefficients, and to estimate the values of the Urbach energy, plasma frequency, and nonlinear optical characteristics of ZnIn<sub>2</sub>Se<sub>4</sub> crystals. The electronic band structure, origin of energy states, optical functions for incident light polarized along the crystal optic axis and perpendicular to it, and partial densities of states projected onto atoms are determined by ab initio calculations. The theoretical results are compared with the experimental data obtained by spectral ellipsometry.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 2","pages":"150 - 159"},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140801559","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 Imaging of Small-Scale Structural Inhomogeneities in CVD Diamond CVD 金刚石中小规模结构非均质性的激光成像
IF 1.1 4区 物理与天体物理
Physics of Wave Phenomena Pub Date : 2024-04-27 DOI: 10.3103/S1541308X2470002X
K. K. Ashikkalieva, T. V. Kononenko, E. E. Ashkinazi, E. A. Obraztsova, V. G. Ral’chenko, V. I. Konov
{"title":"Laser Imaging of Small-Scale Structural Inhomogeneities in CVD Diamond","authors":"K. K. Ashikkalieva,&nbsp;T. V. Kononenko,&nbsp;E. E. Ashkinazi,&nbsp;E. A. Obraztsova,&nbsp;V. G. Ral’chenko,&nbsp;V. I. Konov","doi":"10.3103/S1541308X2470002X","DOIUrl":"10.3103/S1541308X2470002X","url":null,"abstract":"<p>The paper reports a possibility of using high-power femtosecond laser pulses for imaging and subsequent study (by means of optical microscopy) of small-scale structural inhomogeneities in synthetic diamond single crystals. The irradiation of diamond by laser pulses in the intense self-focusing mode creates conditions for multiple optical microscopic breakdowns, whose distribution in the diamond bulk reflects spatial oscillations of local breakdown threshold. The breakdown-produced sp<sup>2</sup> inclusions form ordered stripe microstructures with a characteristic period of several microns. It is shown that spatial oscillations of breakdown threshold correlate with changes in the local concentration of impurity–vacancy defects NV and SiV.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 2","pages":"73 - 82"},"PeriodicalIF":1.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140801457","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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