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Electronic band structure of cubic solid-state CdTe1�xSex solutions 立方固态cdte1xsex溶液的电子能带结构
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/2/101/2021
H. Ilchuk, B. Andriyevsky, O. Kushnir, A. Kashuba, I. Semkiv, R. Petrus
{"title":"Electronic band structure of cubic solid-state CdTe1�xSex solutions","authors":"H. Ilchuk, B. Andriyevsky, O. Kushnir, A. Kashuba, I. Semkiv, R. Petrus","doi":"10.3116/16091833/22/2/101/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/2/101/2021","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":"69616490","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: 3
Stationary optical solitons with nonlinear chromatic dispersion for Lakshmanan-Porsezian-Daniel model having Kerr law of nonlinear refractive index 具有克尔非线性折射率定律的Lakshmanan-Porsezian-Daniel模型的非线性色散稳态光学孤子
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/2/83/2021
A. R. Adem, B. P. Ntsime, A. Biswas, Salam Khan, A. K. Alzahrani, M. Belić
{"title":"Stationary optical solitons with nonlinear chromatic dispersion for Lakshmanan-Porsezian-Daniel model having Kerr law of nonlinear refractive index","authors":"A. R. Adem, B. P. Ntsime, A. Biswas, Salam Khan, A. K. Alzahrani, M. Belić","doi":"10.3116/16091833/22/2/83/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/2/83/2021","url":null,"abstract":". We study stationary optical solitons for the case of Lakshmanan– Porsezian–Daniel model with nonlinear chromatic dispersion and a Kerr law of nonlinear refractive index. The solution is expressed in terms of a special function and its structure is described in details.","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":"69616564","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: 107
Jones formalism for image fusion 琼斯图像融合的形式主义
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/3/151/2021
Khaustov D. Ye, Khaustov Ya. Ye, Ryzhov Ye, Lychkowskyy, R. Vlokh, Nastishin Yu, Hetman Petro Sahaidachnyi
{"title":"Jones formalism for image fusion","authors":"Khaustov D. Ye, Khaustov Ya. Ye, Ryzhov Ye, Lychkowskyy, R. Vlokh, Nastishin Yu, Hetman Petro Sahaidachnyi","doi":"10.3116/16091833/22/3/151/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/3/151/2021","url":null,"abstract":". We suggest a novel approach for the fusion of visible ( u ) and infrared (  ) images, basing on analogy between the mathematical forms of a Jones vector of elliptically polarized light wave and a complex 2D vector 0   composed of the images u and  . Since there is no restriction on which of the two images should be chosen as a real (or imaginary) component, one can construct 0 u i     or     0 1 2 , Tr pos iu     , where the superscript “ Tr ” denotes the operation of transposing, i.e. 0   the analogy with the Jones vector of light wave, the vector 0 , pos neg   can be transformed as 0 , neg pos J      , with J being a complex 2 2  -matrix, an analogue of the Jones matrix for optically anisotropic medium. The above analogy with the Jones formalism allows one to synthesize the fused images using three types of the fusion algorithms, ‘amplitude’, ‘azimuth’ and ‘ellipticity’ ones. Varying the components of","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":"69616300","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
Software for design and analysis of multi-pass absorption cells 用于设计和分析多通道吸收细胞的软件
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/1/1/2021
A. Brzozowski, M. Winkowski, T. Stacewicz
{"title":"Software for design and analysis of multi-pass absorption cells","authors":"A. Brzozowski, M. Winkowski, T. Stacewicz","doi":"10.3116/16091833/22/1/1/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/1/1/2021","url":null,"abstract":". We present interactive calculative approach and relevant software for designing multi-pass optical cells. Our technique performs the analysis of these cells for any sets of concave spherical mirrors and finds the optimal parameters for both laser cavity and optical system that controls laser beam. In particular, we suggest an open-source, free-of-charge and user-friendly tool for simulating","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":"69616312","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
Supervised regression modelling for mitigation of four-wave mixing in dense wavelength-division multiplexing systems 稠密波分复用系统中缓解四波混频的监督回归模型
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/1/12/2021
Venkateasn Kesavel, A. Chandrasekar, P. Ramesh
{"title":"Supervised regression modelling for mitigation of four-wave mixing in dense wavelength-division multiplexing systems","authors":"Venkateasn Kesavel, A. Chandrasekar, P. Ramesh","doi":"10.3116/16091833/22/1/12/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/1/12/2021","url":null,"abstract":"A recent global crisis associated with COVID-19 has encouraged millions of people to work from home, thus causing a drastic increase in overall network traffic, data-rate requirements and end network capabilities This has also produced more noise, cross-talk and undesirable optical-fibre nonlinearities, especially a four-wave mixing (FWM) effect that deteriorates performance of dense wavelength-division multiplexing (DWDM) systems A presence of FWM in the DWDM systems imposes increasing complexity and latency of networks, and decreases their spectral efficiency In its turn, this degrades efficient utilization of optical bandwidth To mitigate the above problems, we suggest a supervised regression modelling (SRM) A relevant SRM-DWDM approach performs self-parametric optimization of the DWDM systems with machine-learning techniques and finds real trade-offs among various factors that affect the FWM Our model reduces complexity of modelling and computational time, resulting in accurate and reliable prediction of parameter values We also evaluate the performance of our SRM-DWDM technique by comparing its data with the iterative results obtained for different parameters (e g , output signal-to-noise ratio, Q-factor, signal power and noise power) Finally, we specify the procedures necessary for global optimization of DWDM systems © 2021, Institute of Physical Optics All rights reserved","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":"69616332","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
Anisotropy of acousto-optic figure of merit in the XZ plane of Pl5Ge3O11 crystals Pl5Ge3O11晶体XZ平面声光优值的各向异性
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/2/110/2021
O. Mys, I. Orykhivskyi, M. Kostyrko, R. Vlokh
{"title":"Anisotropy of acousto-optic figure of merit in the XZ plane of Pl5Ge3O11 crystals","authors":"O. Mys, I. Orykhivskyi, M. Kostyrko, R. Vlokh","doi":"10.3116/16091833/22/2/110/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/2/110/2021","url":null,"abstract":". We use both numerical and analytical approaches when deriving phenomenological relations for the effective elasto-optic coefficients. Anisotropies of the effective elasto-optic coefficients and the acousto-optic (AO) figure of merit are calculated for a particular case of AO interactions in the principal XZ plane of Pb 5 Ge 3 O 11 crystals. Using the approximation of linearly polarized optical eigenwaves, we find that the maximal AO figure of merit for the isotropic diffraction is equal to 30.3×10 –15 s 3 /kg. It is achieved for the AO interactions of the type II at the angle  = 10 deg with respect to the X axis. In case of the anisotropic AO diffraction, the appropriate maximum, 12.4×10 –15 s 3 /kg, is reached for the AO interactions of the type IX at the angle  = 187.9 deg.","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":"69616507","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
Photo-alignment control of topological defects in nematic liquid-crystal cells 向列液晶胞中拓扑缺陷的光对准控制
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/2/87/2021
P. Golub, M. Vasnetsov
{"title":"Photo-alignment control of topological defects in nematic liquid-crystal cells","authors":"P. Golub, M. Vasnetsov","doi":"10.3116/16091833/22/2/87/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/2/87/2021","url":null,"abstract":". We report the experiments aimed at controlling the position of linear topological defect (disclination) in a so-called  -cell filled with a nematic liquid crystal sandwiched between circularly rubbed polyimide (Kapton) layer and photoaligning PVCN material oriented unidirectionally. To satisfy surface-alignment conditions, the director within this cell experiences a twist. The topological defect appears in a plane where the twist angle of the director becomes indeterminate (  90º). In an achiral liquid crystal, orientation of the disclination coincides with the alignment occurring on the unidirectionally oriented substrate. The idea of this work is to control the alignment direction on the substrate by a polarized ultraviolet light. Photo-induced director reorientation on the substrate changes the twist angle in the bulk and so varies the azimuthal angle of the disclination. We monitor reorientation of the disclination as a function of light-polarization angle and irradiation dose.","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":"69616584","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
Cubic�quartic optical solitons in Lakshmanan�Porsezian�Daniel model derived with semi-inverse variational principle 利用半逆变分原理导出Lakshmanan - Porsezian - Daniel模型中的三次四次光学孤子
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2021-01-01 DOI: 10.3116/16091833/22/3/128/2021
Defa Hu, Hailiang Shi
{"title":"Cubic�quartic optical solitons in Lakshmanan�Porsezian�Daniel model derived with semi-inverse variational principle","authors":"Defa Hu, Hailiang Shi","doi":"10.3116/16091833/22/3/128/2021","DOIUrl":"https://doi.org/10.3116/16091833/22/3/128/2021","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":"69616688","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
Tracking of optic axis with an acousto-optically diffracted beam: generation of vector-vortex beam in triglycine sulfate crystals 声光衍射光束对光轴的跟踪:硫酸甘油三酯晶体中矢量涡旋光束的产生
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2020-01-01 DOI: 10.3116/16091833/21/1/1/2020
O. Krupych, M. Kostyrko, D. Adamenko, I. Skab, R. Vlokh
{"title":"Tracking of optic axis with an acousto-optically diffracted beam: generation of vector-vortex beam in triglycine sulfate crystals","authors":"O. Krupych, M. Kostyrko, D. Adamenko, I. Skab, R. Vlokh","doi":"10.3116/16091833/21/1/1/2020","DOIUrl":"https://doi.org/10.3116/16091833/21/1/1/2020","url":null,"abstract":"We analyze acousto-optic interactions for the case when a divergent diffracted optical beam propagates along one of the optic axes in biaxial crystals. We demonstrate that the diffracted beam reveals a specific spatial distribution of polarization states and transfers an optical vector-vortex field. It can be referred to as an optical vector-vortex beam with inseparable polarization and spatial states. At least intra-system entanglement occurs between different degrees of freedom, which are represented by the spin and orbit angular momentums in our case. The spatial orientation of the beam can be controlled while changing the angle between the optic axes. This is achieved by tuning the wavelength of optical radiation and the acoustic wave frequency. We have performed basic calculations using a particular example of optically biaxial triglycine sulfate crystals and assuming that the initial acoustic wave frequency amounts to 50 MHz and the light wavelength changes from 400 to 675 nm. Then the resulting acoustic frequency can increase up to 133 MHz for the longitudinal acoustic mode and 93 MHz or 89 MHz for the two transverse modes. In other words, one can build a generator of optical vortices and operate their spatial orientation, using triglycine sulfate.","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69615567","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
Temperature dependences of optical indicatrix and thermal expansion parameters of TlIn(S1�xSex)2 solid solutions (x = 0, 0.02 and 0.06) TlIn(S1 × xSex)2固溶体(x = 0、0.02和0.06)光学指标和热膨胀参数的温度依赖性
IF 3.9 4区 物理与天体物理
Ukrainian Journal of Physical Optics Pub Date : 2020-01-01 DOI: 10.3116/16091833/21/2/57/2020
A. Say, I. Martynyuk-Lototska, O. Mys, D. Adamenko, M. Kostyrko, O. Gomonnai, R. Vlokh
{"title":"Temperature dependences of optical indicatrix and thermal expansion parameters of TlIn(S1�xSex)2 solid solutions (x = 0, 0.02 and 0.06)","authors":"A. Say, I. Martynyuk-Lototska, O. Mys, D. Adamenko, M. Kostyrko, O. Gomonnai, R. Vlokh","doi":"10.3116/16091833/21/2/57/2020","DOIUrl":"https://doi.org/10.3116/16091833/21/2/57/2020","url":null,"abstract":". Temperature dependences of relative elongation, thermal expansion coefficient, birefringence increment and angle of optical indicatrix rotation are studied for TlIn(S 1–x Se x ) 2 crystals (x = 0, 0.02 and 0.06). We have found that all of these crystals reveal at least two diffused phase transitions (PTs), from normal phase to incommensurate phase and from incommensurate phase to ferroelectric phase. The temperature regions where these PTs take place are determined. A low-temperature PT represents a diffused PT of the first order. We have detected with our techniques that the solid solution with x = 0.02 is non-uniformly stressed. These internal stresses can be caused by a polytype structure. An additional anomaly in the temperature dependence of thermal expansion coefficient occurring at the temperature T 1 = 214 K in the compound with x = 0.06 also points to the existence of polytype structure.","PeriodicalId":23397,"journal":{"name":"Ukrainian Journal of Physical Optics","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69615901","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: 4
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