Оптика и спектроскопия最新文献_第4页

Диагностика технологии оксидов титана и гафния методами люминесценции

Оптика и спектроскопия Pub Date : 2023-01-01 DOI: 10.21883/os.2023.01.54533.4086-22

С. В. Булярский, Г.Г. Гусаров, А. А. Дудин, Д.А. Коива, К.И. Литвинова

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Применение метода абсорбционной диодной лазерной спектроскопии для измерения содержания -=SUP=-13-=/SUP=-С и -=SUP=-12-=/SUP=-С в выдыхаемом воздухе 二聚激光光谱学用于测量内容的应用-=SUP=-13- SUP= =SUP=-12- SUP=-

Оптика и спектроскопия Pub Date : 2023-01-01 DOI: 10.21883/os.2023.01.54548.3776-22

С. В. Киреев, А. А. Кондрашов, С.Л. Шнырев

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Люминесцентная спектроскопия фосфатов, легированных ионами Pr-=SUP=-3+-=/SUP=-, облученных быстрыми электронами и реакторными нейтронами

Оптика и спектроскопия Pub Date : 2023-01-01 DOI: 10.21883/os.2023.05.55711.62-22

Сергей Александрович Киселев, Владимир Алексеевич Пустоваров, Елена Сергеевна Трофимова, М. О. Петрова

{"title":"Люминесцентная спектроскопия фосфатов, легированных ионами Pr-=SUP=-3+-=/SUP=-, облученных быстрыми электронами и реакторными нейтронами","authors":"Сергей Александрович Киселев, Владимир Алексеевич Пустоваров, Елена Сергеевна Трофимова, М. О. Петрова","doi":"10.21883/os.2023.05.55711.62-22","DOIUrl":"https://doi.org/10.21883/os.2023.05.55711.62-22","url":null,"abstract":"This paper reports the spectroscopic properties of phosphates KLuP2O7, Sr9Sc(PO4)7, K3Lu(PO4)2, doped with Pr3+ ions. Photoluminescence (PL) spectra under selective excitation with UV photons, PL excitation spectra, and decay kinetics of pulsed cathodoluminescence are studied. Recordings of luminescence spectra were done with non-irradiated samples and after their irradiation with fast electrons (E = 10 MeV) or fast reactor neutrons. Three typical channels of electronic excitations radiative relaxation have been identified: interconfigurational d−f transitions, intraconfigurational f−f transitions in Pr3+ ions and luminescence associated with defects. After irradiation, significant changes in the luminescence characteristics were observed: a redistribution of the intensity of the intraconfigurational d−f transitions, an increase in the luminescence yield of defects and the manifestation of new emission centers. The formation of radiation-induced defects presumably occurs due to the formation of complexes consisting of phosphorus and oxygen atoms.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73625328","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}

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Характеризация сверхкоротких тераваттных лазерных импульсов методом пространственно-кодированной интерферометрии спектральной фазы 用空间编码光谱相干涉仪法超短的激光脉冲的特征

Оптика и спектроскопия Pub Date : 2023-01-01 DOI: 10.21883/os.2023.02.55009.9-23

Я.О. Романовский, А. В. Митрофанов, П. А. Щеглов, Михаил Михайлович Назаров, Д.А. Сидоров-Бирюков

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Особенности флуоресценции паров атомов Rb, заключенных в ячейку с антирелаксационным покрытием Rb原子的荧光特征，被锁在具有抗松弛层的细胞中。

Оптика и спектроскопия Pub Date : 2023-01-01 DOI: 10.21883/os.2023.02.55016.4585-22

А. Д. Саргсян, А. В. Папоян, Д. Г. Саркисян

{"title":"Особенности флуоресценции паров атомов Rb, заключенных в ячейку с антирелаксационным покрытием","authors":"А. Д. Саргсян, А. В. Папоян, Д. Г. Саркисян","doi":"10.21883/os.2023.02.55016.4585-22","DOIUrl":"https://doi.org/10.21883/os.2023.02.55016.4585-22","url":null,"abstract":"The features of the fluorescence spectra of Rb D1 line vapors were studied for the first time using a cell with anti-relaxation PolyDiMethylSiloxane (PDMS) coating. At high intensities (> 200mW/cm2) of a cw narrow-band diode laser in the transmission spectra due to the effect of optical pumping, there are no absorption lines at atomic transitions, while in the fluorescence spectrum, all 8 atomic transitions of the D1 line are pronounced. A strong redistribution of fluorescence intensity is registered for atomic transitions of 85Rb and 87Rb: in particular, the ratio of fluorescence amplitudes for transitions of 87Rb, Fg = 1 - Fe = 1, 2 in a regular cell is 5, while for a PDMS cell it is equal to 1.5. A physical explanation of the observed features of fluorescence in a PDMS cell is given. A significant increase of fluorescence intensity and a change in redistribution at the transitions with increasing of the PDMS cell temperature is demonstrated. It is noted that at large intensities of laser radiation (when there are no peaks on the transmission/absorption spectra of atomic transitions), fluorescence spectra remain the only convenient and informative tool for studying the behavior of atoms.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78238182","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}

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Материалы для сверхбыстрой терагерцовой фотоники 超快畸变光子材料

Оптика и спектроскопия Pub Date : 2023-01-01 DOI: 10.21883/os.2023.02.55021.4443-22

М.С. Гусельников, Марина Олеговна Жукова, Сергей Александрович Козлов

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Особенности в кинетике затухания желтой люминисценции в кристаллах LiF-UO-=SUB=-2-=/SUB=- LiF-UO晶体中的黄色发光衰减动力学

Оптика и спектроскопия Pub Date : 2023-01-01 DOI: 10.21883/os.2023.01.54531.3869-22

Л. И. Щепина, Н. А. Иванов, Л.И. Ружников, А.А. Храмцова

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Оптические свойства кристаллов семейства лангасита: La-=SUB=-3-=/SUB=-Ga-=SUB=-5-=/SUB=-SiO-=SUB=-14-=/SUB=-, La-=SUB=-3-=/SUB=-Ga-=SUB=-5.5-=/SUB=-Ta-=SUB=-0.5-=/SUB=-O-=SUB=-14-=/SUB=-, Ca-=SUB=-3-=/SUB=-TaGa-=SUB=-3-=/SUB=-Si-=SUB=-2-=/SUB=-O-=SUB=-14-=/SUB=-

Оптика и спектроскопия Pub Date : 2023-01-01 DOI: 10.21883/os.2023.05.55715.67-22

Екатерина Вячеславовна Забелина, Н. С. Козлова, О. А. Бузанов

{"title":"Оптические свойства кристаллов семейства лангасита: La-=SUB=-3-=/SUB=-Ga-=SUB=-5-=/SUB=-SiO-=SUB=-14-=/SUB=-, La-=SUB=-3-=/SUB=-Ga-=SUB=-5.5-=/SUB=-Ta-=SUB=-0.5-=/SUB=-O-=SUB=-14-=/SUB=-, Ca-=SUB=-3-=/SUB=-TaGa-=SUB=-3-=/SUB=-Si-=SUB=-2-=/SUB=-O-=SUB=-14-=/SUB=-","authors":"Екатерина Вячеславовна Забелина, Н. С. Козлова, О. А. Бузанов","doi":"10.21883/os.2023.05.55715.67-22","DOIUrl":"https://doi.org/10.21883/os.2023.05.55715.67-22","url":null,"abstract":"Optical properties of lanthanum-gallium silicate (La3Ga5SiO14), lanthanum-gallium tantalate (La3Ga5.5Ta0.5O14), calcium-tantalum-gallium silicate (Ca3TaGa3Si2O14) crystals in the near ultraviolet (UV) and visible wavelength ranges (200-800 nm) have been studied. For the first time the angles of deviation of the moments of the dipole transition spectral dependences theta(λ) were used to characterize the absorption processes in these crystals. These dependences make it possible to reveal absorption bands that are weakly noticeable on the transmission coefficients spectral dependences, and to estimate the degree of deviation of the dispersion dependence theta(λ) from the value theta=45o corresponding to an ideal ordered crystal. Analysis of theta(λ) dependencies showed that in the studied wavelength range, the lowest deviation from theta =45o is observed in Ca3TaGa3Si2O14, and the highest - in La3Ga5SiO14. The coefficients of the specific rotation angle of the polarization plane rho were obtained by the spectrophotometric interference method in polarized light. The measured values are best approximated by the Vyshin equation. For the first time, dependences of the modified Drude formula 1/rho=f(λ2) were calculated for these crystals. These dependences should be linear in case of an ideal crystal. The largest deviation from the linear dependence is observed for La3Ga5SiO14 crystals, and the lowest for Ca3TaGa3Si2O14. The discrete values of the refractive coefficients No and Ne were measured by the prism method. La3Ga5.5Ta0.5O14 crystals have the highest refractive coefficients, Ca3TaGa3Si2O14 crystals have the lowest. The obtained values are approximated by the Sellmeier equation.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"61 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":"90132674","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}

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Влияние центрального иона металла на люминесцентные и фотофизические параметры фталоцианинов 金属中心离子对荧光和光物理参数的影响

Оптика и спектроскопия Pub Date : 2023-01-01 DOI: 10.21883/os.2023.04.55557.79-22

А. С. Старухин, Алексей Анатольевич Романенко, А. И. Ильин, Виталий Сергеевич Шершень, T.А. Павич, А.О. Савостьянов, И. Ю. Еремчев, Андрей Витальевич Наумов

{"title":"Влияние центрального иона металла на люминесцентные и фотофизические параметры фталоцианинов","authors":"А. С. Старухин, Алексей Анатольевич Романенко, А. И. Ильин, Виталий Сергеевич Шершень, T.А. Павич, А.О. Савостьянов, И. Ю. Еремчев, Андрей Витальевич Наумов","doi":"10.21883/os.2023.04.55557.79-22","DOIUrl":"https://doi.org/10.21883/os.2023.04.55557.79-22","url":null,"abstract":"Based on the data on the spectral and photophysical parameters of the metal complexes of tetraazaporphyrins and phthalocyanines, the effect of the central metal ion on the manifestation of spin-orbit interaction is considered. For complexes of phthalocyanines with Mg(II), Zn(II), Pd(II), and Pt(II) ions, the absorption spectra, luminescence spectra, and luminescence excitation spectra were measured, and the lifetimes and quantum yields of luminescence were determined. It was shown that metal phthalocyanines with Mg(II) and Zn(II) ions, as well as Mg-tetaraazaporphyrin, exhibit intense fluorescence with high quantum yields. For single molecules of Mg-tetaraazaporphyrin in a polymer film at T=6 K, the fluorescence excitation spectra consisting both exclusively of zero-phonon lines and containing phonon wings were measured. A wide distribution of the measured zero-phonon line widths was observed. It is demonstrated, that the introduction of Pd(II) and Pt(II) ions into the center of phthalocyanine macrocycles leads to a decrease in fluorescence and the appearance of intense phosphorescence even at room temperature. Based on measurements of quantum yields of photosensitized generation of singlet molecular oxygen, the quantum yield of interconversion into triplet states for the compounds under study was defined. Deactivation of the lower triplet state of phthalocyanines with Pd(II) and Pt(II) ions indicates the influence of the internal heavy atom effect on the rate of triplet state deactivation at room temperature and at 77 K.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88123157","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}

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Флуоресценция хлоросомных бактериохлорофиллов в органических растворителях 有机溶剂叶绿素细菌叶绿素荧光

Оптика и спектроскопия Pub Date : 2023-01-01 DOI: 10.21883/os.2023.06.55916.108-23

A. A. Жильцова, O.A. Филиппова, E.Д. Краснова, Д. А. Воронов, С. В. Пацаева

{"title":"Флуоресценция хлоросомных бактериохлорофиллов в органических растворителях","authors":"A. A. Жильцова, O.A. Филиппова, E.Д. Краснова, Д. А. Воронов, С. В. Пацаева","doi":"10.21883/os.2023.06.55916.108-23","DOIUrl":"https://doi.org/10.21883/os.2023.06.55916.108-23","url":null,"abstract":"Chlorosomal bacteriochlorophylls are the main photosynthetic pigments of green sulfur bacteria – anoxygenic phototrophic microorganisms. The spectral properties of chlorophylls of higher plants, algae and cyanobacteria are well studied, however, the spectral-luminescent properties of their related compounds, bacteriochlorophylls, which participate in anoxigenic photosynthesis, are practically not described in the scientific literature. The polarity of the solvent and the environment have a significant effect on the emission spectra (bacterio)chlorophylls, which is expressed in the spectral shift of the absorption and fluorescence maxima, as well as changes in the fluorescence intensity. The spectral characteristics of bacteriochlorophylls d and e were obtained in organic solvents such as acetone, methanol, ethanol and isopropanol, as well as in acetone-ethanol (7:2) and acetone-methanol (7:2) mixtures. These solvents are most often used for the extraction of bacteriochlorophylls from bacterial cells, so the work will be useful for the development of methods for the quantitative determination of chlorosomal bacteriochlorophylls in bacterial cells or in samples of natural water.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86062087","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}

引用次数: 0