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Applications of Optics and Photonics最新文献

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Critical discussion on the UV absorption properties of Earth's atmosphere 关于地球大气紫外线吸收特性的关键讨论
Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2271645
T. Döhring
{"title":"Critical discussion on the UV absorption properties of Earth's atmosphere","authors":"T. Döhring","doi":"10.1117/12.2271645","DOIUrl":"https://doi.org/10.1117/12.2271645","url":null,"abstract":"Sun´s ultraviolet radiation is classified into UV-A, UV-B, and UV-C bands. Thereby UV-A passes through Earth´s atmosphere, while UV-B is partially absorbed by ozone. The limitations of the commonly accepted statement, that UV-C is always completely absorbed by Earth´s atmosphere, are discussed critically. Below 200 nm the solar spectrum is strongly absorbed by molecular oxygen. The stratospheric ozone layer has strong absorption between 200 nm and 300 nm. However, the “ozone hole” increases UV-B radiation just below 300 nm and may also open a transmitting atmospheric window for harmful UV-C at the overlap region between oxygen absorption and ozone absorption.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"55 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":"124365712","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: 3
Towards the automatization of the Foucault knife-edge quantitative test 走向自动化的福柯刀口定量检验
Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2272323
G. Rodríguez, J. Villa, G. Martínez, I. de la Rosa, R. Ivanov
{"title":"Towards the automatization of the Foucault knife-edge quantitative test","authors":"G. Rodríguez, J. Villa, G. Martínez, I. de la Rosa, R. Ivanov","doi":"10.1117/12.2272323","DOIUrl":"https://doi.org/10.1117/12.2272323","url":null,"abstract":"Given the increasing necessity of simple, economical and reliable methods and instruments for performing quality tests of optical surfaces such as mirrors and lenses, in the recent years we resumed the study of the long forgotten Foucault knife-edge test from the point of view of the physical optics, ultimately achieving a closed mathematical expression that directly relates the knife-edge position along the displacement paraxial axis with the observable irradiance pattern, which later allowed us to propose a quantitative methodology for estimating the wavefront error of an aspherical mirror with precision akin to interferometry. In this work, we present a further improved digital image processing algorithm in which the sigmoidal cost-function for calculating the transient slope-point of each associated intensity-illumination profile is replaced for a simplified version of it, thus making the whole process of estimating the wavefront gradient remarkably more stable and efficient, at the same time, the Fourier based algorithm employed for gradient integration has been replaced as well for a regularized quadratic cost-function that allows a considerably easier introduction of the region of interest (ROI) of the function, which solved by means of a linear gradient conjugate method largely increases the overall accuracy and efficiency of the algorithm. This revised approach of our methodology can be easily implemented and handled by most single-board microcontrollers in the market, hence enabling the implementation of a full-integrated automatized test apparatus, opening a realistic path for even the proposal of a stand-alone optical mirror analyzer prototype.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"23 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":"123610126","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: 5
Impact of different environmental conditions on lithium-ion batteries performance through the thermal monitoring with fiber sensors 通过光纤传感器热监测不同环境条件对锂离子电池性能的影响
Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2276331
M. Nascimento, M. Ferreira, J. Pinto
{"title":"Impact of different environmental conditions on lithium-ion batteries performance through the thermal monitoring with fiber sensors","authors":"M. Nascimento, M. Ferreira, J. Pinto","doi":"10.1117/12.2276331","DOIUrl":"https://doi.org/10.1117/12.2276331","url":null,"abstract":"In this work, an optical fiber sensing network has been developed to assess the impact of different environmental conditions on lithium batteries performance through the real time thermal monitoring. The battery is submitted to constant current charge and different discharge C-rates, under normal and abusive operating conditions. The results show that for the discharge C-rate of 5.77C, the LiB under cold and dry climates had 32.5% and 27.2% lower temperature variations, when compared with temperate climates, respectively. The higher temperature shift detected in the temperate climate was related to the battery better performance regarding discharge capacity and power capabilities.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"25 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":"123628896","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
Infrared light sensor applied to early detection of tooth decay 红外光传感器应用于早期发现蛀牙
Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2275922
E. Benjumea, J. Espitia, L. Díaz, C. Torres
{"title":"Infrared light sensor applied to early detection of tooth decay","authors":"E. Benjumea, J. Espitia, L. Díaz, C. Torres","doi":"10.1117/12.2275922","DOIUrl":"https://doi.org/10.1117/12.2275922","url":null,"abstract":"The approach dentistry to dental care is gradually shifting to a model focused on early detection and oral-disease prevention; one of the most important methods of prevention of tooth decay is opportune diagnosis of decay and reconstruction. The present study aimed to introduce a procedure for early diagnosis of tooth decay and to compare result of experiment of this method with other common treatments. In this setup, a laser emitting infrared light is injected in core of one bifurcated fiber-optic and conduced to tooth surface and with the same bifurcated fiber the radiation reflected for the same tooth is collected and them conduced to surface of sensor that measures thermal and light frequencies to detect early signs of decay below a tooth surface, where demineralization is difficult to spot with x-ray technology. This device will can be used to diagnose tooth decay without any chemicals and rays such as high power lasers or X-rays.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"32 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":"117107319","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
Onion cell imaging by using Talbot/self-imaging effect 利用Talbot/自成像效应进行洋葱细胞成像
Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2276348
S. Agarwal, Varun Kumar, C. Shakher
{"title":"Onion cell imaging by using Talbot/self-imaging effect","authors":"S. Agarwal, Varun Kumar, C. Shakher","doi":"10.1117/12.2276348","DOIUrl":"https://doi.org/10.1117/12.2276348","url":null,"abstract":"This paper presents the amplitude and phase imaging of onion epidermis cell using the self-imaging capabilities of a grating (Talbot effect) in visible light region. In proposed method, the Fresnel diffraction pattern from the first grating and object is recorded at self-image plane. Fast Fourier Transform (FFT) is used for extracting the 3D amplitude and phase image of onion epidermis cell. The stability of the proposed system, from environmental perturbation as well as its compactness and portability give the proposed system a high potential for several clinical applications.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"9 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":"130054054","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
Optical properties of an anterior lamellar human cornea model based on fibrin-agarose 基于纤维蛋白-琼脂糖的人角膜前板层模型的光学特性
Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2276266
A. Ionescu, J. C. Cardona, R. Ghinea, I. Garzón, M. Gonzalez-Andrades, M. Alaminos, M. M. Pérez
{"title":"Optical properties of an anterior lamellar human cornea model based on fibrin-agarose","authors":"A. Ionescu, J. C. Cardona, R. Ghinea, I. Garzón, M. Gonzalez-Andrades, M. Alaminos, M. M. Pérez","doi":"10.1117/12.2276266","DOIUrl":"https://doi.org/10.1117/12.2276266","url":null,"abstract":"The optical evaluation carried out using the Inverse Adding-Doubling (IAD) method to determine the scattering and the absorption coefficients of the bioengineered human corneal stromas showed that this type of artificial biomaterials shared many similarities with native control cornea after four weeks of development in culture. Their absorption and reduced scattering coefficients values were higher than the ones of the control cornea, but their spectral behaviors of both coefficients were similar. Time of development in culture was an influencing factor on the results.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"15 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":"122489424","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: 4
THz metrology for active electronic devices: state of the art and challenges 有源电子设备的太赫兹测量:现状和挑战
Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2276354
M. Naftaly
{"title":"THz metrology for active electronic devices: state of the art and challenges","authors":"M. Naftaly","doi":"10.1117/12.2276354","DOIUrl":"https://doi.org/10.1117/12.2276354","url":null,"abstract":"The area of terahertz science and applications has grown dramatically in the last 30 years. Instrumental platforms for THz measurements have also proliferated, and now include laser-based, electronic, opto-electronic, and microwave photonics devices. As the field matured, metrology and standardization have gained focused attention, resulting in an increasing number of publications and a book devoted to the subject. However, these have been primarily focused on photonic-based free-space techniques and their particular demands and issues. This paper presents a brief review of metrology requirements for active THz electronic devices, the available instrumentation, state of the art, and challenges.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"12 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":"132747592","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
On the behavior of linear polarizers on highly focused radially polarized beams 高聚焦径向偏振光束上线性偏振器的特性
Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2271772
D. Maluenda, A. Carnicer, I. Juvells, R. Martínez-Herrero
{"title":"On the behavior of linear polarizers on highly focused radially polarized beams","authors":"D. Maluenda, A. Carnicer, I. Juvells, R. Martínez-Herrero","doi":"10.1117/12.2271772","DOIUrl":"https://doi.org/10.1117/12.2271772","url":null,"abstract":"In this communication we analyze the light field distribution of a highly focused radially polarized beam when passes through a linear polarizer. The polarizer is modeled as a plane-parallel uniaxial absorbing medium with the optical axis parallel to the plate surfaces of the polarizer. Analytical results and numerical calculations are provided.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"90 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":"131935341","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
Dissipative solitons in 4-level atomic optical systems 四能级原子光学系统中的耗散孤子
Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2272064
N. Silva, A. Almeida, J. C. Costa, M. Gomes, R. Alves, A. Guerreiro
{"title":"Dissipative solitons in 4-level atomic optical systems","authors":"N. Silva, A. Almeida, J. C. Costa, M. Gomes, R. Alves, A. Guerreiro","doi":"10.1117/12.2272064","DOIUrl":"https://doi.org/10.1117/12.2272064","url":null,"abstract":"In this work we develop a theoretical model to describe the propagation of an optical pulse in a 4-level atomic system. We investigate the existence of dissipative soliton solutions and analyze the stability of these solitary waves, comparing the analytical results with computational simulations based on the effective (1+1)-dimensional model derived from the Maxwell-Bloch equation under the slowly-varying envelope approximation.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"162 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132192970","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
Analytical transient analysis of Peltier device for laser thermal tuning 激光热调谐Peltier器件的解析瞬态分析
Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2276372
Y. Sheikhnejad, Z. Vujicic, A. J. Almeida, R. Bastos, A. Shahpari, A. Teixeira
{"title":"Analytical transient analysis of Peltier device for laser thermal tuning","authors":"Y. Sheikhnejad, Z. Vujicic, A. J. Almeida, R. Bastos, A. Shahpari, A. Teixeira","doi":"10.1117/12.2276372","DOIUrl":"https://doi.org/10.1117/12.2276372","url":null,"abstract":"Recently, industrial trends strongly favor the concepts of high density, low power consumption and low cost applications of Datacom and Telecom pluggable transceiver modules. Hence, thermal management plays an important role, especially in the design of high-performance compact optical transceivers. Extensive care should be taken on wavelength drift for thermal tuning lasers using thermoelectric cooler and indeed, accurate expression is needed to describe transient characteristics of the Peltier device to achieve maximum controllability. In this study, the exact solution of governing equation is presented, considering Joule heating, heat conduction, heat flux of laser diode and thermoelectric effect in one dimension.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"31 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":"133398860","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: 6
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