International Conference on Photonics, Optics and Laser Technology最新文献_第3页

A Digital in-line Holographic Microscope using Fresnel Zone Plate 利用菲涅耳带片的数字直线全息显微镜

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007388802090212

Yonghao Liang, Yilei Hua, Changqing Xie

引用次数: 0

New Photonic Materials based on Ag Nanoparticles Modified with Stilbene Dyes and Its Peculiar Behavior Studied with SERS 二苯乙烯染料修饰银纳米粒子的新型光子材料及其SERS研究

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007569302630267

A. Smirnov, O. V. Odintsova, E. Solovyeva

引用次数: 0

Lead Sulphide Colloidal Quantum Dots for Sensing Applications 传感应用的硫化铅胶体量子点

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007444002350240

A. D. Iacovo, Carlo Venettacci, Simone Antonio Bruno, L. Colace

引用次数: 2

Band-limited Orthogonal Functional Systems for Optical Fresnel Transform 光学菲涅耳变换的带限正交泛函系统

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007367001470153

Tomohiro Aoyagi, Kouichi Ohtsubo, Nobuo Aoyagi

{"title":"Band-limited Orthogonal Functional Systems for Optical Fresnel Transform","authors":"Tomohiro Aoyagi, Kouichi Ohtsubo, Nobuo Aoyagi","doi":"10.5220/0007367001470153","DOIUrl":"https://doi.org/10.5220/0007367001470153","url":null,"abstract":"The fundamental formula in an optical system is Rayleigh diffraction integral. In practice, we deal with Fresnel diffraction integral as approximate diffraction formula. By optical instruments, an optical wave is subject to a band limited. To reveal the band-limited effect in Fresnel transform plane, we seek the function that its total power in finite Fresnel transform plane is maximized, on condition that an input signal is zero outside the bounded region. This problem is a variational one with an accessory condition. This leads to the eigenvalue problems of Fredholm integral equation of the first kind. The kernel of the integral equation is Hermitian conjugate and positive definite. Therefore, eigenvalues are real non-negative numbers. Moreover, we also prove that the eigenfunctions corresponding to distinct eigenvalues have dual orthogonal property. By discretizing the kernel and integral calculus range, the eigenvalue problems of the integral equation depend on a one of the Hermitian matrix in finite dimensional vector space. We use the Jacobi method to compute all eigenvalues and eigenvectors of the matrix. We consider the application of the eigenvectors to the problem of approximating a function and showed the validity of the eigenvectors in computer simulation.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127480399","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

Laser Induced Breakdown Spectroscopy of Diesel Particulate Matter Exhaust Emissions Generated from on Road Diesel Engine: Light Duty Vehicles 激光诱导击穿光谱的柴油微粒物质废气排放产生的道路柴油发动机:轻型车辆

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007618203080314

R. Viskup, Christoph Wolf, W. Baumgartner

{"title":"Laser Induced Breakdown Spectroscopy of Diesel Particulate Matter Exhaust Emissions Generated from on Road Diesel Engine: Light Duty Vehicles","authors":"R. Viskup, Christoph Wolf, W. Baumgartner","doi":"10.5220/0007618203080314","DOIUrl":"https://doi.org/10.5220/0007618203080314","url":null,"abstract":"In this research we apply Laser Induced Breakdown Spectroscopy (LIBS) technique for high resolution spectrochemical analysis of Diesel Particulate Matter - DPM exhaust emissions. DPM has been collected from real, on road - Light - Duty Vehicles, driven by combustion Diesel engine. We have been concerned with the main chemical elements, presents in various type of real Diesel particulate matter. From LIBS measurements, it has been shown, that the plasma electron density can be use for the basic classification of different types of DPM matrices. The excitation temperatures of atoms and ions in plasma can be use for further quantitative analyses of diverse Diesel Particulate Matter. The aim of this study is to reveal the compounds, which are mostly dominant in the Diesel engine exhaust emissions and can affect the overall composition of the DPM. The presence of these elements in exhaust emission may point to different processes, mainly to fuel quality, insufficient engine combustion process, incomplete catalytic reaction, inefficient Diesel particulate filtering technique, or failure of the Diesel engine.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126210090","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

Thermal Analysis for Quantum Cascade Lasers using Experiments, Simulations and Structure Function Obtained by Static Measurement 量子级联激光器的实验、模拟和静态测量结构函数热分析

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007612903030307

S. Takagi, H. Tanimura, T. Kakuno, R. Hashimoto, S. Saito

{"title":"Thermal Analysis for Quantum Cascade Lasers using Experiments, Simulations and Structure Function Obtained by Static Measurement","authors":"S. Takagi, H. Tanimura, T. Kakuno, R. Hashimoto, S. Saito","doi":"10.5220/0007612903030307","DOIUrl":"https://doi.org/10.5220/0007612903030307","url":null,"abstract":"In order to increase the output of quantum cascade lasers (QCLs), it is important to improve the heat dissipation. For investigating the relationship between the device structure and heat dissipation properties, three kinds of different QCL devices were prepared as follows. One is a device which has the ridge covered with SiO2 and thin Au, another is a device which has the ridge covered with SiO2 embedded with Au, and the other is a device which has the ridge covered with SiO2 embedded with Cu. The temperature distributions was measured with a thermos-viewer. In addition, relationship between structure and heat dissipation properties in these structure devices are analysed with a three-dimensional model. As a result, it was clarified from experiments and simulations to improve heat dissipation properties by embedding ridge with Au or Cu. Furthermore, the thermal properties of the QCL device was measured by the statics method to separate the thermal resistance of the ridge, that of substrate, and that of mount parts. It was shown that the thermal resistance improves by more than 2 K/W from 9.3 K/W to 6.9 K/W by embedding ridge with Au or Cu.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"1947 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129272801","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

Solar Pumped Lasers for Free Space Laser Communication 用于自由空间激光通信的太阳能泵浦激光器

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007569702680275

Changming Zhao, Haiyang Zhang, Z. Guan, Zitao Cai, Dongbing He, Yongheng Wang

引用次数: 4

Construction and Characterization of a Pump Source for a Microchip Laser for Space Applications 用于空间应用的微芯片激光器的泵浦源的构造和特性

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007400602130219

Bruno Couto, P. Gordo, A. Amorim

引用次数: 3

Residual Stress Analysis of Aluminum-doped Zinc Oxide Films under Laser-Induced Recovery Process 掺铝氧化锌薄膜在激光诱导恢复过程中的残余应力分析

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007363601340138

Y. Hsieh, Ching-Ching Yang, Chih-Chung Yang, Yu-Hsuan Lin, Kuo-Cheng Huang, W. Hsiao

{"title":"Residual Stress Analysis of Aluminum-doped Zinc Oxide Films under Laser-Induced Recovery Process","authors":"Y. Hsieh, Ching-Ching Yang, Chih-Chung Yang, Yu-Hsuan Lin, Kuo-Cheng Huang, W. Hsiao","doi":"10.5220/0007363601340138","DOIUrl":"https://doi.org/10.5220/0007363601340138","url":null,"abstract":"In this study, a low-temperature annealing technique using an ultraviolet laser was proposed for inducing the crystallization of transparent conductive aluminum-doped zinc oxide (AZO) films. The technique was used in conjunction with a galvanometer scanner to adjust the laser energy density and scanning speed, thereby inducing the amorphous crystallization of thin films. X-ray diffraction was used to analyze the structural properties of annealed thin films. Analysis with different galvanometer scanning speed during annealing and laser pulse repetition rates during annealing revealed that the two diffraction peaks (i.e., the (002) and (103) peaks) of the zinc oxide thin films became more noticeable as the laser pulse repetition rate increased. When the galvanometer scanning speed during annealing was set to 400 mm/s and 600 mm/s, the full width at half of the maximum (FWHM) of the AZO thin films decreased while the annealing frequency increased. By contrast, when the annealing speed was 800 mm/s, increasing the annealing frequency caused the FWHM to decrease and then increase. An analysis of the residual stress of the annealed thin film confirmed that when the annealing speed was reduced from 800 mm/s to 400 mm/s, increases in laser pulse repetition rate resulted in increased residual stress.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129540497","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

Quantum Bit Error Rate Analysis of the Polarization based BB84 Protocol in the Presence of Channel Errors 存在信道错误时基于偏振的BB84协议的量子误码率分析

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007384101810189

Ágoston Schranz, E. Udvary

引用次数: 2