Pub Date : 2023-01-01DOI: 10.21883/os.2023.04.55546.77-22
Сергей Иванович Никитин, Е.М. Куташова, Р. В. Юсупов, Р.Г. Батулин, А. Г. Киямов, Иван Энверович Мумджи, Б. З. Малкин
Detailed studies of emission and excitation spectra of impurity Ho3+ centers in the SrY2O4 single crystal performed by means of the site-selective laser spectroscopy are reported. The energy levels patterns for the 5I8, 5I7, 5I6, 5S2 and 5F4 multiplets of Ho3+ ions which substitute for the Y3+ ions at the two structurally nonequivalent sites Y1 and Y2 with the local Cs symmetry are constructed by making use of the measured spectra. These energy schemes are well described in the framework of the crystal field theory, the sets of 15 crystal field parameters are determined for Ho3+ ions at both Y1 and Y2 sites. The calculated parameters of the EPR spectra agree with the earlier published experimental data.
{"title":"Селективная лазерная спектроскопия примесных центров ионов Ho-=SUP=-3+-=/SUP=- в кристалле SrY-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=-","authors":"Сергей Иванович Никитин, Е.М. Куташова, Р. В. Юсупов, Р.Г. Батулин, А. Г. Киямов, Иван Энверович Мумджи, Б. З. Малкин","doi":"10.21883/os.2023.04.55546.77-22","DOIUrl":"https://doi.org/10.21883/os.2023.04.55546.77-22","url":null,"abstract":"Detailed studies of emission and excitation spectra of impurity Ho3+ centers in the SrY2O4 single crystal performed by means of the site-selective laser spectroscopy are reported. The energy levels patterns for the 5I8, 5I7, 5I6, 5S2 and 5F4 multiplets of Ho3+ ions which substitute for the Y3+ ions at the two structurally nonequivalent sites Y1 and Y2 with the local Cs symmetry are constructed by making use of the measured spectra. These energy schemes are well described in the framework of the crystal field theory, the sets of 15 crystal field parameters are determined for Ho3+ ions at both Y1 and Y2 sites. The calculated parameters of the EPR spectra agree with the earlier published experimental data.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86898595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.04.55551.66-22
М. В. Еремин, К. В. Васин, А. Р. Нурмухаметов
The parameters of even and odd crystal fields acting on iron ions in tetrahedral and octahedral positions of the Fe2Mo3O8 crystal are calculated. The obtained energy level schemes of the lowest multiplets are discussed in the context of the available experimental data. By comparing the calculated intensities of magnetic and electric dipole transitions with experimental data, the parameters of the effective Hamiltonian of the interaction of 3d electrons with an electric field are refined. It is found that the main absorption lines at T < TN in the region of terahertz frequencies are due to excitations of iron ions and are not associated with collective oscillations of magnetic moments. The splitting of absorption lines upon application of an external magnetic field is a consequence of the difference in the orientations of the magnetic sublattices relative to the crystallographic axes.
{"title":"Теория кристаллических полей и спектров возбуждения в Fe-=SUB=-2-=/SUB=-Mo-=SUB=-3-=/SUB=-O-=SUB=-8-=/SUB=-","authors":"М. В. Еремин, К. В. Васин, А. Р. Нурмухаметов","doi":"10.21883/os.2023.04.55551.66-22","DOIUrl":"https://doi.org/10.21883/os.2023.04.55551.66-22","url":null,"abstract":"The parameters of even and odd crystal fields acting on iron ions in tetrahedral and octahedral positions of the Fe2Mo3O8 crystal are calculated. The obtained energy level schemes of the lowest multiplets are discussed in the context of the available experimental data. By comparing the calculated intensities of magnetic and electric dipole transitions with experimental data, the parameters of the effective Hamiltonian of the interaction of 3d electrons with an electric field are refined. It is found that the main absorption lines at T < TN in the region of terahertz frequencies are due to excitations of iron ions and are not associated with collective oscillations of magnetic moments. The splitting of absorption lines upon application of an external magnetic field is a consequence of the difference in the orientations of the magnetic sublattices relative to the crystallographic axes.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86461788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.06.55920.120-23
Э. Б. Попыхова, Т. Е. Пылаев, А.А. Абрамов, Ю. И. Васильев, Л. И. Высоцкий, А. В. Назарова, Э.К. Погосян
The state of the microcirculatory bed in rats with obesity caused by the "cafeteria diet" was studied using laser Doppler flowmetry during therapy with liraglutide. It has been shown that obesity causes a decrease in the perfusion index and normalized amplitudes of endothelial and neurogenic oscillations on the skin of the dorsal foot of experimental animals. Therapy with liraglutide contributed to the reduction of excess body weight and the Lee index, which resulted in the restoration of disturbed microcirculation of the skin of the dorsal foot of rats, as well as the normalization of the functional activity of target organs.
{"title":"Метод лазерной допплеровской флоуметрии в оценке влияния лираглутида на микроциркуляцию у крыс с диет-индуцированным ожирением","authors":"Э. Б. Попыхова, Т. Е. Пылаев, А.А. Абрамов, Ю. И. Васильев, Л. И. Высоцкий, А. В. Назарова, Э.К. Погосян","doi":"10.21883/os.2023.06.55920.120-23","DOIUrl":"https://doi.org/10.21883/os.2023.06.55920.120-23","url":null,"abstract":"The state of the microcirculatory bed in rats with obesity caused by the \"cafeteria diet\" was studied using laser Doppler flowmetry during therapy with liraglutide. It has been shown that obesity causes a decrease in the perfusion index and normalized amplitudes of endothelial and neurogenic oscillations on the skin of the dorsal foot of experimental animals. Therapy with liraglutide contributed to the reduction of excess body weight and the Lee index, which resulted in the restoration of disturbed microcirculation of the skin of the dorsal foot of rats, as well as the normalization of the functional activity of target organs.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87422172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.05.55713.76-22
А. А. Шакирова, Е. В. Дементьева, Т.Б. Попова, М. В. Заморянская
The ceramics based on cubic (Zr0.82-xHfxY0.17Eu0.1)O1.91 with different contents of hafnium were studied. In the work, the elemental composition of the samples was obtained, the cathodoluminescence (CL) spectra and decay kinetics of europium luminescence were studied. The researched showed increase in the content of hafnium doesn’t affect the position and number of observed bands in the luminescence spectrum. The electric dipole and magnetic dipole radiative transitions ratio was estimated for all samples. It’s demonstrated that a decrease in the local symmetry of the europium ion associated with an increase in the hafnium content. It’s shown the 5D0-7F1 transition Eu3+ decay time doesn’t depend on the hafnium content, but varies significantly in different regions of the sample, which can be attributed to the influence of grain boundaries.
{"title":"Особенности люминесценции керамики на основе кубического (ZR-=SUB=-0.82-x-=/SUB=-HF-=SUB=-x-=/SUB=-Y-=SUB=-0.17-=/SUB=-Eu-=SUB=-0.01-=/SUB=-)O-=SUB=-1.91-=/SUB=-","authors":"А. А. Шакирова, Е. В. Дементьева, Т.Б. Попова, М. В. Заморянская","doi":"10.21883/os.2023.05.55713.76-22","DOIUrl":"https://doi.org/10.21883/os.2023.05.55713.76-22","url":null,"abstract":"The ceramics based on cubic (Zr0.82-xHfxY0.17Eu0.1)O1.91 with different contents of hafnium were studied. In the work, the elemental composition of the samples was obtained, the cathodoluminescence (CL) spectra and decay kinetics of europium luminescence were studied. The researched showed increase in the content of hafnium doesn’t affect the position and number of observed bands in the luminescence spectrum. The electric dipole and magnetic dipole radiative transitions ratio was estimated for all samples. It’s demonstrated that a decrease in the local symmetry of the europium ion associated with an increase in the hafnium content. It’s shown the 5D0-7F1 transition Eu3+ decay time doesn’t depend on the hafnium content, but varies significantly in different regions of the sample, which can be attributed to the influence of grain boundaries.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88690549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.04.55552.65-22
В.В. Клековкина, Н.М. Абишев
We present the results of simulations of the spectral and thermodynamic properties of frustrated Pr2Zr2O7 crystals using the distribution function of random strains induced by point defects in an elastically anisotropic continuum.
{"title":"Моделирование кристаллического поля, магнитоупругих взаимодействий и случайных деформаций решетки в пирохлоре Pr-=SUB=-2-=/SUB=-Zr-=SUB=-2-=/SUB=-O-=SUB=-7-=/SUB=-","authors":"В.В. Клековкина, Н.М. Абишев","doi":"10.21883/os.2023.04.55552.65-22","DOIUrl":"https://doi.org/10.21883/os.2023.04.55552.65-22","url":null,"abstract":"We present the results of simulations of the spectral and thermodynamic properties of frustrated Pr2Zr2O7 crystals using the distribution function of random strains induced by point defects in an elastically anisotropic continuum.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76031178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.07.56132.4865-23
Инна Александровна Кузнецова, О. В. Савенко
The problem of electromagnetic H-wave interaction with a layered "insulator-semiconductor- insulator" nanostructure is solved. We assume that the semiconductor layer thickness can be comparable to or less than the charge carrier de Broglie wavelength. Charge carrier surface scattering is taken into account by the Soffer boundary conditions. The electromagnetic wave frequency is less than the plasma resonance frequency. The constant energy surface is an ellipsoid of revolution. Analytical expressions are obtained for the reflection, transmission and absorption coefficients. Calculations are performed for the limiting cases of a degenerate and nondegenerate electron gas. We analyze the dependences of the optical coefficients on dimensionless parameters: the semiconductor layer thickness, the electromagnetic wave frequency and incidence angle, the chemical potential, the ellipticity parameter, the insulating layer permittivities, and the semiconductor-insulator interface roughness parameters.
{"title":"Взаимодействие электромагнитной Н-волны с наноструктурой \"диэлектрик-полупроводник-диэлектрик\" с учетом анизотропии зонной структуры полупроводника","authors":"Инна Александровна Кузнецова, О. В. Савенко","doi":"10.21883/os.2023.07.56132.4865-23","DOIUrl":"https://doi.org/10.21883/os.2023.07.56132.4865-23","url":null,"abstract":"The problem of electromagnetic H-wave interaction with a layered \"insulator-semiconductor- insulator\" nanostructure is solved. We assume that the semiconductor layer thickness can be comparable to or less than the charge carrier de Broglie wavelength. Charge carrier surface scattering is taken into account by the Soffer boundary conditions. The electromagnetic wave frequency is less than the plasma resonance frequency. The constant energy surface is an ellipsoid of revolution. Analytical expressions are obtained for the reflection, transmission and absorption coefficients. Calculations are performed for the limiting cases of a degenerate and nondegenerate electron gas. We analyze the dependences of the optical coefficients on dimensionless parameters: the semiconductor layer thickness, the electromagnetic wave frequency and incidence angle, the chemical potential, the ellipticity parameter, the insulating layer permittivities, and the semiconductor-insulator interface roughness parameters.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"8 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83512799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.02.54995.18-23
А.М. Ромшин, Д.Г. Пастернак, А. С. Алтахов, Р. Х. Баграмов, В. П. Филоненко, И. И. Власов
Recently, we have developed a new approach to measuring local temperatures and controlled heating using diamond particles containing luminescent “silicon-vacancy” centers (SiV). Here, in the development of this approach, the two dependencies are investigated by confocal laser spectroscopy. First, spectral characteristics of SiV-centers in diamond microparticles of various synthesis on the ambient temperature are studied. Second, the heating temperatures of diamond particles on the optical power are analyzed. The maximum temperature sensitivity of SiV-luminescence is determined for diamonds obtained at high pressures, while the maximum heating efficiency is observed for diamonds synthesized by chemical vapor deposition.
{"title":"Температурные характеристики люминесцирующих центров \"кремний-вакансия\" в алмазных частицах, синтезированных различными методами","authors":"А.М. Ромшин, Д.Г. Пастернак, А. С. Алтахов, Р. Х. Баграмов, В. П. Филоненко, И. И. Власов","doi":"10.21883/os.2023.02.54995.18-23","DOIUrl":"https://doi.org/10.21883/os.2023.02.54995.18-23","url":null,"abstract":"Recently, we have developed a new approach to measuring local temperatures and controlled heating using diamond particles containing luminescent “silicon-vacancy” centers (SiV). Here, in the development of this approach, the two dependencies are investigated by confocal laser spectroscopy. First, spectral characteristics of SiV-centers in diamond microparticles of various synthesis on the ambient temperature are studied. Second, the heating temperatures of diamond particles on the optical power are analyzed. The maximum temperature sensitivity of SiV-luminescence is determined for diamonds obtained at high pressures, while the maximum heating efficiency is observed for diamonds synthesized by chemical vapor deposition.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87078879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.06.55904.117-23
И. Л. Пластун, А. А. Захаров, Анатолий Александрович Наумов
Mechanisms of intermolecular interaction between components of polyelectrolyte target delivery capsules and maleimide, which enhances the therapeutic action of the capsule, are investigated by quantum chemical modeling methods based on Density Functional Theory (DFT). Molecules of polymer polyelectrolyte capsule components - polyarginine and dextran sulfate and maleimide molecule are investigated. Based on calculation of molecular complexes structures and corresponding IR spectra with analysis of formed hydrogen bonds parameters it was revealed that there was a strong enough hydrogen bonding between maleimide and arginine, included in capsule composition. This allows us to conclude that modification of arginine with maleimide promotes stronger hydrogen bonding with amino acids contained in human body, which is confirmed by calculations, and gives the possibility of using maleimide as an "anchor" to hold the capsule in the tissue.
{"title":"Спектральные проявления механизмов межмолекулярного взаимодействия модифицированных малеимидом полиэлектролитных капсул, используемых в таргетной терапии","authors":"И. Л. Пластун, А. А. Захаров, Анатолий Александрович Наумов","doi":"10.21883/os.2023.06.55904.117-23","DOIUrl":"https://doi.org/10.21883/os.2023.06.55904.117-23","url":null,"abstract":"Mechanisms of intermolecular interaction between components of polyelectrolyte target delivery capsules and maleimide, which enhances the therapeutic action of the capsule, are investigated by quantum chemical modeling methods based on Density Functional Theory (DFT). Molecules of polymer polyelectrolyte capsule components - polyarginine and dextran sulfate and maleimide molecule are investigated. Based on calculation of molecular complexes structures and corresponding IR spectra with analysis of formed hydrogen bonds parameters it was revealed that there was a strong enough hydrogen bonding between maleimide and arginine, included in capsule composition. This allows us to conclude that modification of arginine with maleimide promotes stronger hydrogen bonding with amino acids contained in human body, which is confirmed by calculations, and gives the possibility of using maleimide as an \"anchor\" to hold the capsule in the tissue.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87208209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.04.55556.52-22
Владимир Иванович Соколов, Н. Б. Груздев, В. В. Меньшенин, А. Н. Киряков, А. Ф. Зацепин, В. А. Важенин, Г. А. Емельченко
In this paper photoluminescense spectra and EPR-signals of ZnO single crystals, doped with manganese and containing (from EPR data) uncontrolled impurity of iron, were investigated. At the temperature of 4.5 K in photoluminescense spectrum the band in energy interval of 1.55-1.8 eV (12493 – 14508 cm-1) was observed. This band contains some intensive lines; these lines are caused by Fe3+ ions (d5-configuration). The first and most intensive line at the energy of 1.79 eV corresponds to irradiative transition 4T1 (G) → 6A1 (S) in Fe3+ ions. The other peaks are electronic-vibrational structure. This structure may be caused by force interaction in deformed Fe3+ - 4O2- - cluster.
{"title":"Проявление локальных колебаний в спектрах фотолюминесценыии ZnO : Fe-=SUP=-3+-=/SUP=-","authors":"Владимир Иванович Соколов, Н. Б. Груздев, В. В. Меньшенин, А. Н. Киряков, А. Ф. Зацепин, В. А. Важенин, Г. А. Емельченко","doi":"10.21883/os.2023.04.55556.52-22","DOIUrl":"https://doi.org/10.21883/os.2023.04.55556.52-22","url":null,"abstract":"In this paper photoluminescense spectra and EPR-signals of ZnO single crystals, doped with manganese and containing (from EPR data) uncontrolled impurity of iron, were investigated. At the temperature of 4.5 K in photoluminescense spectrum the band in energy interval of 1.55-1.8 eV (12493 – 14508 cm-1) was observed. This band contains some intensive lines; these lines are caused by Fe3+ ions (d5-configuration). The first and most intensive line at the energy of 1.79 eV corresponds to irradiative transition 4T1 (G) → 6A1 (S) in Fe3+ ions. The other peaks are electronic-vibrational structure. This structure may be caused by force interaction in deformed Fe3+ - 4O2- - cluster.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90259268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.07.56127.4540-23
А. В. Павлов, А.О. Гаугель
An approach for modeling the transfer function and approximating the impulse response in the +1 diffraction order of the 4f holography scheme of the Fourier holography under usage of high-frequency holograms characterized by the presence of an inverse section of the dependence of the local diffraction efficiency on the spatial frequency in the frequency range below the frequency of equality of local amplitudes of the reference spectrum and the reference beam by the model of “Difference of Gaussians” is proposed and justified. The expediency of using, when implementing processing models that involve working only with the global maximum of the circuit response, a transfer function that is equivalent in terms of the minimum mean square error of the impulse response, as providing a more accurate approximation of the impulse response compared to the approximation of the direct transfer function, is shown. The validity of the approach is confirmed by comparing the simulation results with experimental data.
{"title":"Моделирование эквивалентной передаточной функции и импульсного отклика схемы голографии Фурье для высокочастотных голограмм","authors":"А. В. Павлов, А.О. Гаугель","doi":"10.21883/os.2023.07.56127.4540-23","DOIUrl":"https://doi.org/10.21883/os.2023.07.56127.4540-23","url":null,"abstract":"An approach for modeling the transfer function and approximating the impulse response in the +1 diffraction order of the 4f holography scheme of the Fourier holography under usage of high-frequency holograms characterized by the presence of an inverse section of the dependence of the local diffraction efficiency on the spatial frequency in the frequency range below the frequency of equality of local amplitudes of the reference spectrum and the reference beam by the model of “Difference of Gaussians” is proposed and justified. The expediency of using, when implementing processing models that involve working only with the global maximum of the circuit response, a transfer function that is equivalent in terms of the minimum mean square error of the impulse response, as providing a more accurate approximation of the impulse response compared to the approximation of the direct transfer function, is shown. The validity of the approach is confirmed by comparing the simulation results with experimental data.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90289893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：