International Conference on Correlation Optics最新文献_第9页

Three-dimensional optical transfer function of optical system: from sophisticated calculation to simple approximation 光学系统的三维光学传递函数:从复杂计算到简单近似

International Conference on Correlation Optics Pub Date : 2021-12-21 DOI: 10.1117/12.2620537

V. Borovytsky

引用次数: 0

Formation a photonic zigzag by a half cylinder 由半圆柱体形成光子之字形

International Conference on Correlation Optics Pub Date : 2021-12-21 DOI: 10.1117/12.2615193

M. Gavryliak, A. Maksimyak, P. Maksimyak

引用次数: 0

Performance of CdTe-based p-n junction-diode X/γ-ray detectors 基于cdte的p-n结二极管X/γ射线探测器的性能

International Conference on Correlation Optics Pub Date : 2021-12-21 DOI: 10.1117/12.2615569

V. Gnatyuk, S. Levytskyi, O. Maslyanchuk, O. Kulyk, T. Aoki

{"title":"Performance of CdTe-based p-n junction-diode X/γ-ray detectors","authors":"V. Gnatyuk, S. Levytskyi, O. Maslyanchuk, O. Kulyk, T. Aoki","doi":"10.1117/12.2615569","DOIUrl":"https://doi.org/10.1117/12.2615569","url":null,"abstract":"The electrical and spectroscopic properties of the CdTe-based p-n junction-diode X/γ-ray detectors have been studied by the measurements of I-V characteristics and emission spectra of 137Cs, 57Co, and 241Am radioisotopes. The In/CdTe/Au diodes were fabricated by the frontside laser irradiation doping technique. Detector-grade p-like CdTe(111) crystals, pre-coated with an In dopant (electrode) film, were irradiated with nanosecond KrF laser pulses in distilled water. Laser stimulated solid-phase doping was attributed to generation and propagation of stress and shock waves, barodiffusion of In dopant atoms into the thin CdTe surface region and thus, creation of high concentration donors. The second contact (quasi-ohmic) was formed on the opposite (Cd-terminated) crystal side by vacuum evaporation of Au. In addition, some diodes were created on CdTe crystals, which were preliminary annealed in vacuum prior to deposition of metal films. The I-V characteristics of the In/CdTe/Au p-n junction diodes evidenced that the reverse dark current in the initial part was described by the Sah-Noyce-Shockley theory. Creation of the favorable conditions for efficient collection of photogenerated charge carriers, decrease in the reverse dark current in the In/CdTe/Au detectors ensured obtaining the high-energy resolution spectra. Based on the electric field dependence of the 137Cs isotope spectrum, it was established that the applied bias V = 800 V was the optimal for the diodes formed on preliminary annealed CdTe crystals which ensured the energy resolution FWHM = 0.62 % at the 662 keV line","PeriodicalId":250235,"journal":{"name":"International Conference on Correlation Optics","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124919511","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: 2

Polarization-based skin cancer detection in vivo 基于极化的体内皮肤癌检测

International Conference on Correlation Optics Pub Date : 2021-12-21 DOI: 10.1117/12.2621081

L. Tchvialeva, Daniel C. Louie, Yuheng Wang, S. Kalia, H. Lui, Tim K. Lee

{"title":"Polarization-based skin cancer detection in vivo","authors":"L. Tchvialeva, Daniel C. Louie, Yuheng Wang, S. Kalia, H. Lui, Tim K. Lee","doi":"10.1117/12.2621081","DOIUrl":"https://doi.org/10.1117/12.2621081","url":null,"abstract":"Recently optical imaging is focused on non-invasive methods which could be automated and provide diagnostics in vivo. Coherence and polarization encoding the wave phase transformation create additional channels of information compared with the amplitude-based techniques. The modification of polarization properties like depolarization, birefringence, and diattenuation are the subject of polarimetry. One of the depolarization metrics is the Degree of Polarization (DOP), which represent the fraction of polarized light maintained while light propagates in media, ranging from 1 for fully polarized to 0 for totally depolarized light. After constructing a one-shot Stokes polarimetry probe, we conducted a preliminary clinical trial including 20 benign, 28 malignant skin lesions. Also 59 normal skin sites where tested. Using DOP as a diagnostics criterion we were able to separate Malignant Melanomas against all other lesions. Another depolarization metric tested was the Polarization Memory Rate (PMR) which characterizes the decay of circularly polarized light relative to linearly polarized light as light propagates in a medium. PMR demonstrates a strong diagnostics potential separating all cancer against benign lesions.","PeriodicalId":250235,"journal":{"name":"International Conference on Correlation Optics","volume":"12126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129535822","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: 1

Ellipse field to vector field singularities through diffraction 椭圆场到矢量场的衍射奇异性

International Conference on Correlation Optics Pub Date : 2021-12-21 DOI: 10.1117/12.2615493

B. Komal, S. Deepa, S. K. Pal, Sunil Kumar, P. Senthilkumaran

{"title":"Ellipse field to vector field singularities through diffraction","authors":"B. Komal, S. Deepa, S. K. Pal, Sunil Kumar, P. Senthilkumaran","doi":"10.1117/12.2615493","DOIUrl":"https://doi.org/10.1117/12.2615493","url":null,"abstract":"Ellipse fields and vector fields refer to the electric fields with predominant states of polarization as elliptical and linear, respectively. Singularities in these ellipse fields (C points and L lines) and vector fields (V points) refer to points where some of the parameters related to polarization are not defined. A simple technique for transforming a C point to a V point is suggested by diffracting a higher order integral C points from a fork grating. The fork grating transfers the orbital angular momentum (OAM) in each of the diffraction orders yielding polarization singularities with different OAM and spin angular momentum (SAM) compositions. A V point singularity is obtained in one of the diffracted orders depending on the OAM content in each of the superposing circular basis of the input C point, and the charge of the fork grating. The index of the desired V point and the order in which it occurs can be engineered by appropriately choosing the input C point beam and the charge of the fork grating. Therefore, this diffraction technique can be used for the transformation of an ellipse field singularity to a vector field singularity through just a single element, i.e., a fork grating.","PeriodicalId":250235,"journal":{"name":"International Conference on Correlation Optics","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125957025","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

Fourier energy analysis of Kikuchi patterns for investigation of defect system of diamond crystals 用于金刚石晶体缺陷系统研究的菊池图的傅里叶能量分析

International Conference on Correlation Optics Pub Date : 2021-12-21 DOI: 10.1117/12.2615864

I. Fodchuk, S. Ivakhnenko, V. Tkach, S. Balovsyak, M. Solodkyi, M. Borcha, I. Hutsuliak, A. Kuzmin, Y. Roman, Y. Smusenko, P. Pynuk

引用次数: 0

Fabrication and investigation photosensitive of Graphite/PEDOT:PSS/n-CdZnTe organic-inorganic heterojunction 石墨/PEDOT:PSS/n-CdZnTe有机-无机异质结的制备及光敏性研究

International Conference on Correlation Optics Pub Date : 2021-12-21 DOI: 10.1117/12.2615775

A. Mostovyi, S. Kuryshchuk, T. Kovaliuk, I. Koziarskyi, M. Solovan

引用次数: 0

The effect of photonic correction on the optical and photoelectric characteristics of the In4Se3, In4Тe3 and GaP epitaxial structures 光子校正对In4Se3、In4Тe3和GaP外延结构光学和光电特性的影响

International Conference on Correlation Optics Pub Date : 2021-12-21 DOI: 10.1117/12.2616570

M. O. Sorokatyi, V. Pylypko, V. Strebezhev, I. Yuriychuk, V. Strebezhev, V. M. Lipka, Y. Dobrovolsky

{"title":"The effect of photonic correction on the optical and photoelectric characteristics of the In4Se3, In4Тe3 and GaP epitaxial structures","authors":"M. O. Sorokatyi, V. Pylypko, V. Strebezhev, I. Yuriychuk, V. Strebezhev, V. M. Lipka, Y. Dobrovolsky","doi":"10.1117/12.2616570","DOIUrl":"https://doi.org/10.1117/12.2616570","url":null,"abstract":"Optimizing effect of pulsed laser radiation on the structure of the In4Se3 and In4Тe3 epitaxial layers obtained by liquid phase epitaxy was studied by SEM, AFM, and EDS techniques. Ordered quasi-periodic micro- and nanostructures were created on the samples by laser melting. When studying the transverse chips of the structures based on the In4Se3, it was found that laser treatment leads to the formation of both narrow band gap and wide band gap phases of the In – Se system in the epitaxial layer. The action of laser treatment leads to the inversion of the conductivity type and to the formation of the laser photosensitive surface-barrier structures, reduces the influence of recombination processes on the heteroboundary. Optical studies have shown the efficiency of controlled laser action on the structural-phase state of the In4Se3 and In4Тe3 layers and improving their optical characteristics and photosensitivity. An increase in the sensitivity of the FTO-GaP diode structure at the wavelength 254 nm, as well as in the entire spectral range is observed with the laser treatment action","PeriodicalId":250235,"journal":{"name":"International Conference on Correlation Optics","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131789366","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

Optical methods development for banknote deterioration evaluation 纸币劣化评价光学方法的发展

International Conference on Correlation Optics Pub Date : 2021-12-21 DOI: 10.1117/12.2615675

T. Kyrychok, Z. Kazhmuratov, P. Kyrychok, T. Klymenko, O. Sokol

{"title":"Optical methods development for banknote deterioration evaluation","authors":"T. Kyrychok, Z. Kazhmuratov, P. Kyrychok, T. Klymenko, O. Sokol","doi":"10.1117/12.2615675","DOIUrl":"https://doi.org/10.1117/12.2615675","url":null,"abstract":"We have developed a model of the medium color of the image, according to which the image moves away from the viewer at a certain distance, at which all the colors of the image are mixed, forming an inseparable color spot. That is, the image is converted into a conditional pixel, which is a mixture of colors of all its pixels. Based on the proposed model, it is possible to estimate the degree of closeness of the optical characteristics of the two images by the deviation of the average color. The method of medium color was realized with a specially designed program application for Kazakh Tenge as well as for Ukrainian Hryvnia evaluation. The measurement of optical characteristics was performed in the non-printed area near the watermark on both the face and reverse of the banknotes. The results show that the evaluation of the image by the deviation of the medium color according to the developed model is a fairly accurate indicator of wear of the printed layer, has an arithmetic mean error less than traditional optical evaluation methods - brightness change and color difference. Thus, the deviation of the medium color describes the human perception of banknote soiling fairly well. This method of medium color, which aims to eliminate the subjectivity of image evaluation, can be used to process both digital images and imprints.","PeriodicalId":250235,"journal":{"name":"International Conference on Correlation Optics","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132897049","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

Biochemical and laser-polarimetric markers of hepatocyte cytolysis syndrome under conditions of toxic damage and protein deficiency 肝细胞溶解综合征在毒性损伤和蛋白质缺乏条件下的生化和激光极化标记物

International Conference on Correlation Optics Pub Date : 2021-12-21 DOI: 10.1117/12.2617041

H. Kopylchuk, I. Nikolaychuk, O. Voloshchuk, A. Motrich, O. Konovchuk

引用次数: 0