Applications of Optics and Photonics最新文献_第4页

Ultrasensitive detection of phenolic antioxidants by surface enhanced Raman spectroscopy 表面增强拉曼光谱超灵敏检测酚类抗氧化剂

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2272054

N. Ornelas-Soto, I. Aguilar-Hernández, N. K. Afseth, T. López-Luke, F. F. Contreras‐Torres, J. Wold

引用次数: 0

MIMO processing based on higher-order Poincaré spheres 基于高阶庞卡罗球的MIMO处理

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2276251

G. Fernandes, N. Muga, A. Pinto

引用次数: 0

Modeling of dynamics of nanosecond laser ablation in phase explosion regime 相位爆炸条件下纳秒激光烧蚀动力学建模

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2271981

V. Mazhukin, V. Mazhukin, A. V. Shapranov, A. V. Shapranov, M. Demin, A. Mazhukin, A. Mazhukin

引用次数: 1

Laser based manufacturing of channels and improvement of their lifetime with sol-gel coatings 激光通道制造及其溶胶-凝胶涂层寿命的改善

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2271778

M. Aymerich, A. I. Gómez-Varela, Ezequiel Álvarez, M. Flores-Arias

引用次数: 0

Study of photo activation reaction of experimental graphene dental nanocomposites through dynamic laser speckle 动态激光散斑法研究实验性石墨烯牙科纳米复合材料的光活化反应

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2272419

M. Salas, A. Yebra, A. M. Pozo, C. Lucena, M. M. Pérez

引用次数: 1

An advanced arrangement of the optical spectrograph based on acousto-optical and cross-disperser techniques for astronomical applications 一种基于声光交叉分散技术的天文用光谱仪的先进布置

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2276366

A. Shcherbakov, Adan Omar Arellanes, E. Tepichín Rodríguez, V. Chavushyan

{"title":"An advanced arrangement of the optical spectrograph based on acousto-optical and cross-disperser techniques for astronomical applications","authors":"A. Shcherbakov, Adan Omar Arellanes, E. Tepichín Rodríguez, V. Chavushyan","doi":"10.1117/12.2276366","DOIUrl":"https://doi.org/10.1117/12.2276366","url":null,"abstract":"We develop a new avenue to creating the optical spectrometer for the Guillermo Haro astrophysical observatory (Mexico), which combines specifically progressed prism spectrometer with modern acousto-optical approach in the frame of a joint instrument. This schematic arrangement includes two principal novelties. First, we exploit recently developed acousto-optical nonlinearity of the two-phonon light scattering in crystals with linear acoustic losses, which admits an additional physical degree of freedom. This effect allows us to use nonlinear acousto-optical effect for linear processing of optical signals in parallel regime within all the visible range. Similar effect is based on the possibility for tuning the frequency of elastic waves and admits the nonlinear apodization improving the dynamic range. Secondly, we are using the cross-disperser technique with acousto-optical processing for the first time to our knowledge. Additionally, the acousto-optical spectrometers can provide almost 100% efficiency in the acousto-optical interaction in the optimized regime. In the case of 4% Mg doped LiNbO3 crystal the absorption edge can be shifted down to 370 nm for limited intensity of incoming light. The observation window of optical spectrometer in that observatory is ~ 9 cm, so that the theoretical estimations of maximal performances for a low-loss LiNbO3-crystal for this optical aperture at 405 nm give the spectral resolution 0.0523 Å, resolving power 77,400, and number of spots 57,500. The illustrative proof-of-principle experiments with available for us 6-cm LiNbO3-crystal have been performed and demonstrated the spectral resolution 0.0782 Å at 405 nm and resolving power 51,790.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"349 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116351234","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

Dental resins properties studied by Bragg gratings 用Bragg光栅研究牙用树脂的性能

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2275877

H. Kalinowski, Ana Paula Gebert de Oliveira Franco, L. Z. Karam

引用次数: 1

SPaCe-GEM: solver of the Einstein equations using GPUs under the gravitoelectromagnetic approximation 空间- gem:在引力电磁近似下使用gpu求解爱因斯坦方程

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2272069

M. Gomes, João C. Costa, R. Alves, N. Silva, A. Guerreiro

引用次数: 1

Spectrophotometric characterization of hemozoin as a malaria biomarker 疟原虫色素作为疟疾生物标志物的分光光度表征

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2270995

I. Silva, R. Lima, G. Minas, S. Catarino

{"title":"Spectrophotometric characterization of hemozoin as a malaria biomarker","authors":"I. Silva, R. Lima, G. Minas, S. Catarino","doi":"10.1117/12.2270995","DOIUrl":"https://doi.org/10.1117/12.2270995","url":null,"abstract":"Malaria is a parasitic disease with more than a billion people worldwide at risk of contraction. The disease is predominantly widespread in regions with precarious healthcare conditions and resources. Despite the several available malaria diagnostic methods, only two are predominantly used in the field in malaria-endemic countries: microscopy and rapid diagnostic tests. In this work, an alternative diagnostic system is proposed, based on optical absorption spectrophotometry. The main objective of this paper is the spectrophotometric study of hemozoin as a malaria biomarker, since it is a sub-product of the malaria infection. The optical absorbance of hemoglobin and hemozoin solutions in purified water was measured in the visible spectrum range using a spectrophotometric setup. The results showed main absorbance peaks at 540 nm and 574 nm for hemoglobin, and at 672 nm for hemozoin. The tests performed in aqueous solutions have shown that both hemoglobin and synthetic hemozoin, when alone in solution, were detected by absorbance, with sensitivity of 0.05 g/L, and with a high linearity (R2> 0.92 for all wavelength peaks). Furthermore, it was found that the whole blood and the hemoglobin spectra have similar absorption peaks. By combining whole blood and synthetic hemozoin solutions, it was proved that both the hemozoin and the hemoglobin absorbance peaks could still be detected by spectrophotometry. For instance, in polydimethylsiloxane wells, the proposed method was able to detect hemozoin in whole blood samples for optical paths as low as 3 mm in cylindrical wells, thus proving the capability for this method’s miniaturization. With this work, it is possible to conclude that hemozoin is a viable candidate as a biomarker for malaria detection by optical absorption spectrophotometry and also, that an autonomous, fully integrated and low cost miniaturized system, based on such a principle, could provide an efficient diagnosis of malaria.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114672588","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

Studying tunability of some NIR semiconductor lasers by external cavity setup 采用外腔装置研究了几种近红外半导体激光器的可调谐性

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2272170

M. A. Bani, M. Nazeri, Hamed Abbasi

引用次数: 0