Journal of the European Optical Society-Rapid Publications最新文献_第4页

Scalable sub-cycle pulse generation by soliton self-compression in hollow capillary fibers with a decreasing pressure gradient 压力梯度递减的中空毛细纤维中孤子自压缩产生可扩展的亚周期脉冲

IF 1.5 4区物理与天体物理

Journal of the European Optical Society-Rapid Publications Pub Date : 2023-03-17 DOI: 10.1051/jeos/2023011

Marina Fernández Galán

引用次数: 1

Sorting microplastics from other materials in water samples by ultra-high-definition imaging 超高清成像法从水样中分离微塑料

IF 1.5 4区物理与天体物理

Journal of the European Optical Society-Rapid Publications Pub Date : 2023-03-15 DOI: 10.1051/jeos/2023010

M. Roussey

{"title":"Sorting microplastics from other materials in water samples by ultra-high-definition imaging","authors":"M. Roussey","doi":"10.1051/jeos/2023010","DOIUrl":"https://doi.org/10.1051/jeos/2023010","url":null,"abstract":"In this study a commercial particle analyzer was used to image and help sorting microplastic particles (MPs) dispersed in filtrated and de-aerated tap water. The device provides a relatively easy and fast procedure for obtaining ultra-high-definition imaging, allowing the determination of shape, size, and number of 2D-projections of solid particles. The image analysis revealed clear differences among the studied different MPs originating from the grinding of five common grades of plastic sheets as they affect the image rendering differently, principally due to the light scattering either at the surface or in the volume of the microplastics. The high-quality imaging of the device also allows the discrimination of the microplastics from air bubbles with well-defined spherical shapes as well as to obtain an estimate of the size of MPs in a snapshot. We associate the differences among the shapes of the identified MPs in this study depending on the plastic type with known physical properties, such as brittleness, crystallinity, or softness. Furthermore, as a novel method we exploit a parameter based on the light intensity map from moving particles in cuvette flow to sort MPs from other particles, such as, wood fiber, human hair, and air bubbles. Using the light intensity map, which is related to the plastic-water refractive index ratio, the presence of microplastics in water can be revealed among other particles, but not their specific plastic type.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48754023","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

Novel time-resolved CARS implementation for application in microscopy 用于显微镜的新型时间分辨CARS实现

IF 1.5 4区物理与天体物理

Journal of the European Optical Society-Rapid Publications Pub Date : 2023-03-03 DOI: 10.1051/jeos/2023008

P. Neethling

{"title":"Novel time-resolved CARS implementation for application in microscopy","authors":"P. Neethling","doi":"10.1051/jeos/2023008","DOIUrl":"https://doi.org/10.1051/jeos/2023008","url":null,"abstract":"Vibrational dephasing times for benzene and carbon disulfide are measured using a custom single-beam Coherent Anti-stokes Raman Spectroscopy (CARS) setup. A femtosecond oscillator is used to pump a Polarization Maintaining All Normal Dispersion Photonic Crystal Fibre (PM-ANDi-PCF) to generate a broad band supercontinuum, covering a spectral region from 680 – 900 nm. The dispersion properties of the PM-ANDi-PCF ensures the supercontinuum is stable and there exists a fixed phase relationship between the spectral components of the supercontinuum. This enables its temporal compression using i2PIE, implemented using a liquid crystal spatial light modulator (SLM) in a 4f geometry. This SLM is also used to shape the pulse spectrally and temporally. With this setup we could demonstrate time-resolved CARS, measuring the vibrational relaxation times of a CS2/benzene mixture, and eliminate the non-resonant background completely. The main advantage of this setup is the fact that it is a single beam technique, eliminating the requirement for aligning the overlap of the pump and probe, both spatially and temporally, in the focal plane of the microscope. The strengths and limitations of the technique are highlighted and the route to time-resolved/background free vibrational microscopy is proposed.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47395108","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

DC pulsed plasma magnetron sputtering of CdO/Cu/CdO multilayers thin films for self-cleaning and optoelectronic applications 用于自清洁和光电应用的CdO/Cu/CdO多层薄膜的直流脉冲等离子体磁控溅射

IF 1.5 4区物理与天体物理

Journal of the European Optical Society-Rapid Publications Pub Date : 2023-03-03 DOI: 10.1051/jeos/2023009

Alzahra A. Abd El-Moula, M. Raaif, F. El-Hossary, Mohamed Abo El-Kassem

{"title":"DC pulsed plasma magnetron sputtering of CdO/Cu/CdO multilayers thin films for self-cleaning and optoelectronic applications","authors":"Alzahra A. Abd El-Moula, M. Raaif, F. El-Hossary, Mohamed Abo El-Kassem","doi":"10.1051/jeos/2023009","DOIUrl":"https://doi.org/10.1051/jeos/2023009","url":null,"abstract":"In this study, CdO/Cu/CdO multilayers thin films were organized on glass substrates with different Cu intermetallic layer thickness engaging DC plasma magnetron sputtering. The optoelectronic properties and structural characteristics of the multilayers at various Cu intermetallic layer thicknesses which were varied from 4 to 16 nm were explored. The calculated band gap was reduced from 2.66 eV to 2.48 eV as the Cu intermetallic layer thickness increased from 4 to 16 nm. The refractive index and coefficient of extinction of CdO/Cu/CdO multilayers increased with increasing the Cu intermetallic layer thickness. The resistivity is reduced from 1.8×10−2 Ω.cm for CdO single layer to reach a value of 2.7×10−4 Ω.cm for CdO/Cu (16nm)/CdO multilayer. Further, the sheet resistance is decreased from 1000 to 13.8 /sq with the variation in Cu intermetallic layer thickness from 0 to 16 nm. CdO/Cu (4 nm)/CdO multilayer film recorded the best figure of merit (2.3x10-4 Ω−1). After sunlight illumination for the multilayers, the surface wettability was improved and the contact angle recorded lowest value of nearly 24 for CdO/Cu (8nm)/CdO and CdO/Cu (12nm)/CdO.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49480098","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

Monitoring and meaning of vibrations in robot polishing 机器人抛光振动的监测及其意义

IF 1.5 4区物理与天体物理

Journal of the European Optical Society-Rapid Publications Pub Date : 2023-02-12 DOI: 10.1051/jeos/2023007

M. Schneckenburger, Sven Hoefler, R. Boerret, R. Almeida, Ines Braga

{"title":"Monitoring and meaning of vibrations in robot polishing","authors":"M. Schneckenburger, Sven Hoefler, R. Boerret, R. Almeida, Ines Braga","doi":"10.1051/jeos/2023007","DOIUrl":"https://doi.org/10.1051/jeos/2023007","url":null,"abstract":"Robot polishing is increasingly used in the production of high-end glass work pieces such as astronomy mirrors, lithography lenses, laser gyroscopes or high-precision coordinate measuring machines. The quality of optical components such as lenses or mirrors can be described by shape errors and surface roughness. Whilst the trend towards sub nanometre level surfaces finishes and features progresses, matching both form and finish coherently in complex parts remains a major challenge. With larger or more precise optics, the influence of process instabilities on the quality of the optics to be polished has a greater impact. Vibrations at a polishing head have a negative influence on the polishing result. These vibrations are caused by bearing damage, motors and other excitations (e.g. gears, belts). The aim of this work is the determination of vibrations at a polishing head and their avoidance strategies. Different bearing conditions are considered: new and perfect bearing, a bearing that has been in contact with polish (rust) and a bearing with repeatable damage (groove milled on the running surface). It can be shown that the frequencies of bearings affect the polishing tool. Furthermore, reasons for and against vibrations in the process are discussed. For the case of vibrationless machining, avoidance strategies were presented.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49613921","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

Transient Optical Simulation by Coupling Elastic Multibody Systems, Finite Elements, and Ray Tracing 耦合弹性多体系统、有限元和光线追踪的瞬态光学模拟

IF 1.5 4区物理与天体物理

Journal of the European Optical Society-Rapid Publications Pub Date : 2023-02-09 DOI: 10.1051/jeos/2023006

L. Hahn, Fabian Matter, P. Eberhard

引用次数: 0

Environmental Pollution Detection: A Novel Chirped Spectral Modulation Algorithm for a more Accurate Monitoring of Gas Pollutants in air 环境污染检测：一种新的Chirped光谱调制算法，用于更准确地监测空气中的气体污染物

IF 1.5 4区物理与天体物理

Journal of the European Optical Society-Rapid Publications Pub Date : 2023-01-17 DOI: 10.1051/jeos/2023005

Mohamed Shalaby, F. Alorifi

{"title":"Environmental Pollution Detection: A Novel Chirped Spectral Modulation Algorithm for a more Accurate Monitoring of Gas Pollutants in air","authors":"Mohamed Shalaby, F. Alorifi","doi":"10.1051/jeos/2023005","DOIUrl":"https://doi.org/10.1051/jeos/2023005","url":null,"abstract":"This work presents a new technique based on modulating the IR absorbance of each element in a mixture in a chirped manner to reduce the effect of their partial spectral absorption overlap on the accuracy of determining their concentrations. This Chirped Spectral Modulation CSM algorithm can deal with mixtures containing unknown elements rather than the elements whose concentrations are aimed. This novel algorithm, when compared to existing pattern recognition techniques, makes it easy to analyze the constituents of a mixture with high accuracy in the presence of traces of unknown components. It is found that the new algorithm can detect the presence of gas pollutants such as sulfur dioxide, carbon monoxide, carbon dioxide, nitrogen dioxide in a sample containing many other unknown polluting elements. This new algorithm is tested on air samples composed of predetermined percentages of air constituents and the results of calculations are compared with those of Classical Least Squares CLS pattern recognition algorithm. The comparison showed that the new algorithm can detect down to very small traces of harmful gases such as NO2, and SO2, at least one order of magnitude less than those detected by the CLS approach. Finally, the new algorithm is used to examine collected air samples from an industrial zone, and in the middle and at the exit of a road tunnel in Riyadh area which showed that the percentages of sulfur dioxide, nitrogen dioxide, and carbon monoxide are well below the safe levels.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":"20 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41299653","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

Exploring the hidden dimensions of an optical extreme learning machine 探索光学极限学习机的隐藏维度

IF 1.5 4区物理与天体物理

Journal of the European Optical Society-Rapid Publications Pub Date : 2023-01-12 DOI: 10.1051/jeos/2023001

Duarte Silva

引用次数: 1

Space Debris Laser Ranging with range-gate-free Superconducting Nanowire Single-Photon Detector 利用距离门自由超导纳米线单光子探测器进行空间碎片激光测距

IF 1.5 4区物理与天体物理

Journal of the European Optical Society-Rapid Publications Pub Date : 2023-01-12 DOI: 10.1051/jeos/2023002

Haitao Zhang, Yuqiang Li, Zhulian Li, Xiao-ping Pi, Yongzhang Yang, Rufeng Tang

引用次数: 1

An Attempt to Apply Laser Combustion to Palm Waste 激光燃烧处理棕榈废弃物的尝试

IF 1.5 4区物理与天体物理

Journal of the European Optical Society-Rapid Publications Pub Date : 2023-01-12 DOI: 10.1051/jeos/2023003

Ali Abdel-Rahman Marouf, Fatima Awad, Yousef A. Alsabah, Mohammed U. Orsod

{"title":"An Attempt to Apply Laser Combustion to Palm Waste","authors":"Ali Abdel-Rahman Marouf, Fatima Awad, Yousef A. Alsabah, Mohammed U. Orsod","doi":"10.1051/jeos/2023003","DOIUrl":"https://doi.org/10.1051/jeos/2023003","url":null,"abstract":"The focus of this study was to develop a method to demonstrate the feasibility of obtaining useful and high-value resources from Phoenix dactylifera residues and, to determine the physical and chemical properties of the ash of dates-palm-tree remains. Date-palm leaves and fiber samples were combusted for 50 s, using an Nd: YAG laser with 40 W output power. It was found, that combustion of agricultural waste could be completed in 30 seconds by laser while it required 1-2 minutes by microwave and at least 2 hours for conventional heating. The subjects of this treatment, the leaves and fiber samples, before and after combustion were investigated by X-ray diffraction (XRD) and Fourier transform infrared (FTIR). The XRD results of the palm-fiber after combustion reveal that the samples were crystallized with a rhombohedral phase of acetamide and hatrurite, orthorhombic finite, and Ca4Si2O6 (CO3)(OH)2, and a monoclinic phase of ikaite properties. The XRD patterns of palm-leaf after combustion reveal that the samples were crystallized with orthorhombic hillebrandite, rhombohedral acetamide, and the monoclinic phase of each karpatite, morganite, and howlite. Finally, the FTIR exhibited several absorbance peaks, assigned to silica.","PeriodicalId":674,"journal":{"name":"Journal of the European Optical Society-Rapid Publications","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49307602","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