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Ukrainian Journal of Physical Optics最新文献

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Simultaneous acousto-optic diffractions by two lobes of a shaped phased-array transducer 同时声光衍射的两个叶形相控阵换能器
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/3/138/2021
M. Illienko, Y. Pilgun, Ye. Smirnov
{"title":"Simultaneous acousto-optic diffractions by two lobes of a shaped phased-array transducer","authors":"M. Illienko, Y. Pilgun, Ye. Smirnov","doi":"10.3116/16091833/22/3/138/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/3/138/2021","url":null,"abstract":". We consider simultaneous diffractions of light by two lobes of sound radiation pattern in an acousto-optic modulator which is built on SiO 2 single crystal and has two-element phased-array transducer with the fixed phase shift  . Implementation of this diffraction type greatly improves power efficiency of the device. Transducer shaping is used to steer the lobes and satisfy the Bragg’s conditions for simultaneous acousto-optic diffractions. The conditions of the diffraction are defined and a mathematical model for calculating diffraction efficiency is suggested. It is shown that a parallel diffraction regime is almost three times more energy-efficient than a serial regime. Several configurations of transducer elements’ shape are analyzed. In particular, changes in the dimensions of diamond-shaped elements are shown to allow adjusting the operating frequency within 23%. An experimental sample of the device is built.","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69616239","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: 1
Surface-localized plasmon resonance in a system of randomly arranged gold nanorods on a dielectric substrate 介电基板上随机排列的金纳米棒系统的表面定域等离子体共振
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/2/69/2021
I. Yaremchuk, A. Pidluzhna, P. Stakhira, O. Kuntyi, L. Sus, V. Savaryn, A. Kostruba, V. Fitio, Y. Bobitski
{"title":"Surface-localized plasmon resonance in a system of randomly arranged gold nanorods on a dielectric substrate","authors":"I. Yaremchuk, A. Pidluzhna, P. Stakhira, O. Kuntyi, L. Sus, V. Savaryn, A. Kostruba, V. Fitio, Y. Bobitski","doi":"10.3116/16091833/22/2/69/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/2/69/2021","url":null,"abstract":". Gold-nanorod arrays of a quasi-hexagonal shape are successfully obtained with electrochemical deposition method and their optical properties are investigated. The optical response of a two-layer structure, in which the first layer is a nanocomposite consisting of Au nanorods and the second one is a thin indium tin oxide film on a glass substrate, has been analyzed. Dependences of absorption cross-section of Au nanorods on the light wavelength at different eccentricities are modelled using electrostatic approximation. It is shown that longitudinal plasmon resonance prevails over other resonances for the Au nanorods deposited on glass substrates. A Maxwell−Garnett theory and a matrix method are used to predict the optical characteristics of the whole structure. We have demonstrated that it is possible to estimate the concentration of nanorods on the surface using the appropriate simulation results. In addition, efficient absorption properties can be obtained at a given wavelength by changing the geometry of nanorods. In particular, there is a shift of the absorption peak towards near-infrared region whenever the nanorods become high enough and smaller in diameter.","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69616555","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: 2
Effect of dopant concentration and crystalline structure on the absorption edge in ZnO:Y films 掺杂剂浓度和晶体结构对ZnO:Y薄膜吸收边的影响
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/1/31/2021
B. Turko, U. Mostovoy, M. Kovalenko, Y. Eliyashevskyi, Y. Kulyk, O. Bovgyra, V. Dzikovskyi, A. Kostruba, R. Vlokh, V. Savaryn, V. Stybel, B. Tsizh, S. Majevska
{"title":"Effect of dopant concentration and crystalline structure on the absorption edge in ZnO:Y films","authors":"B. Turko, U. Mostovoy, M. Kovalenko, Y. Eliyashevskyi, Y. Kulyk, O. Bovgyra, V. Dzikovskyi, A. Kostruba, R. Vlokh, V. Savaryn, V. Stybel, B. Tsizh, S. Majevska","doi":"10.3116/16091833/22/1/31/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/1/31/2021","url":null,"abstract":". We study the crystalline structure and absorption spectra for the zinc oxide films with different levels of yttrium doping. The films are deposited on glass substrates, using radio-frequency magnetron sputtering. We estimate the concentration of free charge carriers and show that the ‘blue’ shift of the fundamental absorption edge in ZnO:Y films with increasing doping level (up to 4.7 wt. %) is explained by Burstein–Moss effect. At higher concentrations of yttrium, behaviour of the fundamental absorption edge is described by a known empirical Urbach rule.","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69616389","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: 6
Optical solitons and conservation laws associated with Kudryashov�s sextic power-law nonlinearity of refractive index 与Kudryashov折射率的幂律非线性相关的光孤子和守恒律
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/1/38/2021
E. Zayed, R. Shohib, M. Alngar, A. Biswas, M. Ekici, Salam Khan, A. K. Alzahrani, M. Belić
{"title":"Optical solitons and conservation laws associated with Kudryashov�s sextic power-law nonlinearity of refractive index","authors":"E. Zayed, R. Shohib, M. Alngar, A. Biswas, M. Ekici, Salam Khan, A. K. Alzahrani, M. Belić","doi":"10.3116/16091833/22/1/38/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/1/38/2021","url":null,"abstract":". We recover the cases of solutions in the shape of bright, dark and singular optical solitons for the self-phase modulation effect, which belongs to the type of N. A. Kudryashov’s sextic power-law nonlinearity of refractive index. Three different integration schemes have been implemented. These are a unified Riccati equation, our new mapping scheme and our addendum to the common N. A. Kudryashov’s method. All of the solitons are enlisted and the criterions of their existence are mentioned. Finally, we extract three appropriate conservation laws.","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69616399","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: 126
25-km long transmission and real-time detection of 5-GBd/s optical QPSK data using external phase-error compensation 采用外部相位误差补偿的25km长距离传输和实时检测5gbd /s光QPSK数据
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/2/92/2021
T. Ha, Y. Won, D. Seo
{"title":"25-km long transmission and real-time detection of 5-GBd/s optical QPSK data using external phase-error compensation","authors":"T. Ha, Y. Won, D. Seo","doi":"10.3116/16091833/22/2/92/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/2/92/2021","url":null,"abstract":"","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69616628","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: 1
Electro-optic properties of double-type emission of organic electroluminescence device 有机电致发光器件双型发射的电光特性
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/1/53/2021
I. Helzhynskyy, S. Kutsiy, S. Albota
{"title":"Electro-optic properties of double-type emission of organic electroluminescence device","authors":"I. Helzhynskyy, S. Kutsiy, S. Albota","doi":"10.3116/16091833/22/1/53/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/1/53/2021","url":null,"abstract":". We study electroluminescence and impedance properties of a double-type white organic light-emitting device (WOLED) based on phosphorescent and thermally activated delayed fluorescence emissions in a single heterostructure. Current–voltage characteristics of the WOLED and impedance spectroscopy data are obtained for the layered and composite-layer devices. These results demonstrate that a combination of layer-based and composite-based technologies in a single heterostructure improves both the efficiency and the stability of WOLED heterostructures. Light-emission performance of the WOLED is also studied. The device reveals very good electroluminescence properties and colour coordinates as a white light source. Its maximal brightness is larger than 10 4 cd/m 2 and the maximal external quantum efficiency is larger than 12%.","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69616441","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
Optical solitons in fibre Bragg gratings with third- and fourth-order dispersive reflectivities 具有三阶和四阶色散反射率的光纤布拉格光栅中的光孤子
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/4/239/2021
Y. Yıldırım, A. Biswas, P. Guggilla, S. Khan, H. Alshehri, M. Belic
{"title":"Optical solitons in fibre Bragg gratings with third- and fourth-order dispersive reflectivities","authors":"Y. Yıldırım, A. Biswas, P. Guggilla, S. Khan, H. Alshehri, M. Belic","doi":"10.3116/16091833/22/4/239/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/4/239/2021","url":null,"abstract":". For the first time in the field of nonlinear optics, we address cubic–quartic solitons appearing in the fibre Bragg gratings with dispersive reflectivity for four different cases of nonlinear refractive-index structures. A complete spectrum of single solitons, together with some straddled solitons, emerges from the integration scheme adopted by us, which is the approach of sine–Gordon equation. within this integration scheme, which is discussed in this work. The details will be sketched after a brief introduction into our model.","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69616847","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: 98
Polarized photoluminescence of Alq3 thin films obtained by the method of oblique-angle deposition 斜角沉积法制备Alq3薄膜的偏振光致发光
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/4/209/2021
Karbovnyk, Sadovyi, Turko, Kukhta, Vasil’yev, Horyn, Kulyk, Eliyashevskyi, Kostruba, Savaryn, V. Stybel, S. Majevska, Ivan Franko
{"title":"Polarized photoluminescence of Alq3 thin films obtained by the method of oblique-angle deposition","authors":"Karbovnyk, Sadovyi, Turko, Kukhta, Vasil’yev, Horyn, Kulyk, Eliyashevskyi, Kostruba, Savaryn, V. Stybel, S. Majevska, Ivan Franko","doi":"10.3116/16091833/22/4/209/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/4/209/2021","url":null,"abstract":". We show that the degree of linear polarization of the photoluminescence of tris-(8-hydroxyquinoline)aluminium (Alq 3 ) thin film can be increased by about 10 times, using a method of oblique-angle deposition. This is due to greater ordering of molecular alignment in this thin film.","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69616818","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: 1
Temperature behaviour of fundamental absorption edge in superionic Ag6PS5I crystals 超离子Ag6PS5I晶体基本吸收边的温度行为
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/4/216/2021
I. Studenyak, M. Pop, I. Shender, A. Pogodin, M. Kranjčec
{"title":"Temperature behaviour of fundamental absorption edge in superionic Ag6PS5I crystals","authors":"I. Studenyak, M. Pop, I. Shender, A. Pogodin, M. Kranjčec","doi":"10.3116/16091833/22/4/216/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/4/216/2021","url":null,"abstract":". Ag 6 PS 5 I single crystals are grown from solution–melt by means of a vertical zone crystallization method. Dispersion of the refractive index of Ag 6 PS 5 I measured with a spectral ellipsometry technique is described by a known Wemple– DiDomenico relation. The fundamental absorption edge for the Ag 6 PS 5 I crystals is studied in the temperature range 77–300 K. The temperature dependences of the optical pseudogap and the Urbach energy are analyzed in the framework of Einstein model. The parameters of electron–phonon interaction, which results in the Urbach behaviour of the fundamental absorption edge, are determined. The influence of temperature and structural disorderings on the optical absorption in Ag 6 PS 5 I is studied.","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69616825","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: 7
Implementation of optical quantum gate for polarization-encoded qubits via acousto-optic diffraction by shear acoustic waves in vitreous media 玻璃介质中剪切声波声光衍射实现偏振编码量子比特的光量子门
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/4/198/2021
O. Krupych, I. Martynyuk-Lototska, I. Orykhivskyi, D. Adamenko, M. Kostyrko, R. Vlokh
{"title":"Implementation of optical quantum gate for polarization-encoded qubits via acousto-optic diffraction by shear acoustic waves in vitreous media","authors":"O. Krupych, I. Martynyuk-Lototska, I. Orykhivskyi, D. Adamenko, M. Kostyrko, R. Vlokh","doi":"10.3116/16091833/22/4/198/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/4/198/2021","url":null,"abstract":". We demonstrate experimentally that acousto-optic diffraction by a shear acoustic wave propagating in fused silica can transform linear or circular polarization states into their orthogonal counterparts. It is also shown that a corresponding acousto-optic cell with a shear acoustic wave propagating in a vitreous medium can be used as a NOT or CNOT gate. The advantage of our method is a possibility for spatial manipulation by qubits via acousto-optic diffraction under condition of changing frequency of the acoustic wave.","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69616409","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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