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High Resolution through Graded-Index Microoptics 通过分级折射率显微光学的高分辨率
Advances in Optical Technologies Pub Date : 2012-07-11 DOI: 10.1155/2012/647165
V. Kotlyar, A. Kovalev, A. Nalimov, S. Stafeev
{"title":"High Resolution through Graded-Index Microoptics","authors":"V. Kotlyar, A. Kovalev, A. Nalimov, S. Stafeev","doi":"10.1155/2012/647165","DOIUrl":"https://doi.org/10.1155/2012/647165","url":null,"abstract":"By solving Helmholtz equations, relationships to describe propagating modes in an arbitrary graded-index planar waveguide are derived. We show that in the quadratic- and secant-index waveguides a minimal mode width is 0.4, where is the wavelength in free space and is the refractive index on the fiber axis. By modeling in FullWAVE, we show that the high-resolution imaging can be achieved with half-pitch graded-index Mikaelian microlenses (ML) and Maxwell’s “fisheye” lenses. It is shown that using a 2D ML, the point source can be imaged near the lens surface as a light spot with the full width at half maximum (FWHM) of 0.12λ. This value is close to the diffraction limit for silicon () in 2D media λ. We also show that half-pitch ML is able to resolve at half-maximum two close point sources separated by a 0.3λ distance.","PeriodicalId":156432,"journal":{"name":"Advances in Optical Technologies","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129951089","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: 7
Investigation of Noble Metals Colloidal Systems Formed by Laser Synthesis at Air 空气激光合成贵金属胶体体系的研究
Advances in Optical Technologies Pub Date : 2012-07-08 DOI: 10.1155/2012/907292
V. K. Goncharov, K. V. Kozadaev, D. Shchehrykovich
{"title":"Investigation of Noble Metals Colloidal Systems Formed by Laser Synthesis at Air","authors":"V. K. Goncharov, K. V. Kozadaev, D. Shchehrykovich","doi":"10.1155/2012/907292","DOIUrl":"https://doi.org/10.1155/2012/907292","url":null,"abstract":"The present work is dedicated to the development of formation and diagnostics methods of water colloids of noble metals (Au, Au, Pt). As anoble nanoparticles formation method, the laser synthesis at air conditions is proposed. By the implantation of noble nanoparticles into water media, the colloidal systems of noble metals can be obtained. For the aims of investigation of noble colloid parameters, the complex diagnostics method is used. Such approach deals with direct methods (scanning electron microscopy and the characteristic radiation registration) and indirect methods (absorption spectroscopy and extinction modeling by Mie theory).","PeriodicalId":156432,"journal":{"name":"Advances in Optical Technologies","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131814661","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
The Information Coding in the Time Structure of the Object of a Laser Pulse in an Optical Echo Processor 光回波处理器中激光脉冲目标时间结构中的信息编码
Advances in Optical Technologies Pub Date : 2012-07-03 DOI: 10.1155/2012/561808
L. Nefediev, A. R. Sakhbieva
{"title":"The Information Coding in the Time Structure of the Object of a Laser Pulse in an Optical Echo Processor","authors":"L. Nefediev, A. R. Sakhbieva","doi":"10.1155/2012/561808","DOIUrl":"https://doi.org/10.1155/2012/561808","url":null,"abstract":"The encoding of information in time intervals of an echelon of laser pulses of an object pulse in the optical echo processor is considered. The measures of information are introduced to describe the transformation of classical information in quantum information. It is shown that in the description of information transformation into quantum information, the most appropriate measure is a measure of quantum information based on the algorithmic information theory.","PeriodicalId":156432,"journal":{"name":"Advances in Optical Technologies","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116629433","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
Cloud Computing for Rigorous Coupled-Wave Analysis 严格耦合波分析的云计算
Advances in Optical Technologies Pub Date : 2012-07-02 DOI: 10.1155/2012/398341
N. Kazanskiy, P. Serafimovich
{"title":"Cloud Computing for Rigorous Coupled-Wave Analysis","authors":"N. Kazanskiy, P. Serafimovich","doi":"10.1155/2012/398341","DOIUrl":"https://doi.org/10.1155/2012/398341","url":null,"abstract":"Design and analysis of complex nanophotonic and nanoelectronic structures require significant computing resources. Cloud computing infrastructure allows distributed parallel applications to achieve greater scalability and fault tolerance. The problems of effective use of high-performance computing systems for modeling and simulation of subwavelength diffraction gratings are considered. Rigorous coupled-wave analysis (RCWA) is adapted to cloud computing environment. In order to accomplish this, data flow of the RCWA is analyzed and CPU-intensive operations are converted to data-intensive operations. The generated data sets are structured in accordance with the requirements of MapReduce technology.","PeriodicalId":156432,"journal":{"name":"Advances in Optical Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128702845","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: 13
Carrier Formation Dynamics of Organic Photovoltaics as Investigated by Time-Resolved Spectroscopy 用时间分辨光谱研究有机光伏的载流子形成动力学
Advances in Optical Technologies Pub Date : 2012-06-27 DOI: 10.1155/2012/316045
Kouhei Yonezawa, M. Ito, H. Kamioka, T. Yasuda, Liyuan Han, Y. Moritomo
{"title":"Carrier Formation Dynamics of Organic Photovoltaics as Investigated by Time-Resolved Spectroscopy","authors":"Kouhei Yonezawa, M. Ito, H. Kamioka, T. Yasuda, Liyuan Han, Y. Moritomo","doi":"10.1155/2012/316045","DOIUrl":"https://doi.org/10.1155/2012/316045","url":null,"abstract":"Bulk heterojunction (BHJ) based on a donor (D) polymer and an acceptor (A) fullerene derivative is a promising organic photovoltaics (OPV). In order to improve the incident photon-to-current efficiency (IPCE) of the BHJ solar cell, a comprehensive understanding of the ultrafast dynamics of excited species, such as singlet exciton (D*), interfacial charge-transfer (CT) state, and carrier (D","PeriodicalId":156432,"journal":{"name":"Advances in Optical Technologies","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114297862","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: 11
Optimization Efficiency of Monte Carlo Simulation Tool for Evanescent Wave Spectroscopy Fiber-Optic Probe 倏逝波光谱光纤探头蒙特卡罗仿真工具的效率优化
Advances in Optical Technologies Pub Date : 2012-05-31 DOI: 10.1155/2012/187678
D. Khankin, S. Mordechai, S. Mark
{"title":"Optimization Efficiency of Monte Carlo Simulation Tool for Evanescent Wave Spectroscopy Fiber-Optic Probe","authors":"D. Khankin, S. Mordechai, S. Mark","doi":"10.1155/2012/187678","DOIUrl":"https://doi.org/10.1155/2012/187678","url":null,"abstract":"In a previous work, we described the simulation tool (FOPS 3D) (Khankin et al., 2001) which can simulate the full three-dimensional geometrical structure of a fiber and the propagation of a light beam sent through it. In this paper we are focusing on three major points: the first concerns the improvements made with respect to the simulation tool and the second, optimizations implemented with respect to the calculations' efficiency. Finally, the major research improvement from our previous works is the simulation results of the optimal absorbance value, as a function of bending angle for a given uncladded part diameter, that are presented; it is suggested that fiber-bending may improve the efficiency of recording the relevant measurements. This is the third iteration of the FOPS development process (Mann et al., 2009) which was significantly optimized by decreasing memory usage and increasing CPU utilization.","PeriodicalId":156432,"journal":{"name":"Advances in Optical Technologies","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121957581","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
Cross-Shaped Terahertz Metal Mesh Filters: Historical Review and Results 十字形太赫兹金属网滤波器:历史回顾和结果
Advances in Optical Technologies Pub Date : 2012-05-13 DOI: 10.1155/2012/530512
A. M. Melo, A. Gobbi, M. H. Piazzetta, Alexandre Monteiro da Silva
{"title":"Cross-Shaped Terahertz Metal Mesh Filters: Historical Review and Results","authors":"A. M. Melo, A. Gobbi, M. H. Piazzetta, Alexandre Monteiro da Silva","doi":"10.1155/2012/530512","DOIUrl":"https://doi.org/10.1155/2012/530512","url":null,"abstract":"Terahertz frequencies experiments has motivated the development of new sources, detectors and optical components. Here we will present a review of THz bandpass filters ranging from 0.4 to 10 THz. We also demonstrate our fabrication process, simulations and experimental results.","PeriodicalId":156432,"journal":{"name":"Advances in Optical Technologies","volume":"231 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124288790","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: 55
Numerical Self-Consistent Analysis of VCSELs VCSELs的数值自洽分析
Advances in Optical Technologies Pub Date : 2012-05-10 DOI: 10.1155/2012/689519
R. Sarzała, T. Czyszanowski, M. Wasiak, M. Dems, Ł. Piskorski, W. Nakwaski, K. Panajotov
{"title":"Numerical Self-Consistent Analysis of VCSELs","authors":"R. Sarzała, T. Czyszanowski, M. Wasiak, M. Dems, Ł. Piskorski, W. Nakwaski, K. Panajotov","doi":"10.1155/2012/689519","DOIUrl":"https://doi.org/10.1155/2012/689519","url":null,"abstract":"Vertical-cavity surface-emitting lasers (VCSELs) yield single-longitudinal-mode operation, low-divergence circular output beam, and low threshold current. This paper gives an overview on theoretical, self-consistent modelling of physical phenomena occurring in a VCSEL. The model has been experimentally confirmed. We present versatile numerical methods for nitride, arsenide, and phosphide VCSELs emitting light at wavelengths varying from violet to near infrared. We also discuss different designs with respect to optical confinement: gain guidance using tunnel junctions and index guidance using oxide confinement or photonic crystal and we focus on the problem of single-transverse-mode operation.","PeriodicalId":156432,"journal":{"name":"Advances in Optical Technologies","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126061461","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: 26
Generation of Atomic Optical Lattices by Dammann Gratings 用达曼光栅产生原子光学晶格
Advances in Optical Technologies Pub Date : 2012-04-17 DOI: 10.1155/2012/647657
X. Ji., Shuwu Xu, S. Gu
{"title":"Generation of Atomic Optical Lattices by Dammann Gratings","authors":"X. Ji., Shuwu Xu, S. Gu","doi":"10.1155/2012/647657","DOIUrl":"https://doi.org/10.1155/2012/647657","url":null,"abstract":"We first calculated the diffraction intensity distributions of the Dammann gratings illuminated by Gaussian light wave. The empirical equations were deduced by numerical calculations to calculate the parameters, such as the spatial period, the maximum intensity, and the maximum intensity gradient, of the optical trap array composed by a set of Dammann gratings and a focus lens. Thus, a novel type of optical trap array for trapping cold atoms (or molecules) was proposed and its features were discussed. The results showed the optical trap array with very short period could be generated. High optical dipole potential could be presented so as to have strong attractive force to the atoms to form atomic optical lattices of high lattice density. Compared with the optical lattices formed by standing wave interferences of CO2 laser, there are many unique advantages of which are formed by Dammann gratings.","PeriodicalId":156432,"journal":{"name":"Advances in Optical Technologies","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127636657","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 Performance of 1% at. Yb : Ceramic 1% at的激光性能。Yb:陶瓷
Advances in Optical Technologies Pub Date : 2012-04-12 DOI: 10.1155/2012/484235
A. Pirri, G. Toci, M. Vannini
{"title":"Laser Performance of 1% at. Yb : Ceramic","authors":"A. Pirri, G. Toci, M. Vannini","doi":"10.1155/2012/484235","DOIUrl":"https://doi.org/10.1155/2012/484235","url":null,"abstract":"We present the performance of a laser prototype based on 1% at. Yb :  ceramic, longitudinally pumped in quasi-CW regime at 968 nm. A slope efficiency of 49% with respect to the absorbed pump power was obtained for laser operation at 1032.5 nm. We studied the effects on the laser oscillation due to the reinjection of the residual pump. The thermal behavior of the sample was investigated by means of numerical simulations, accounting for the different thermal load resulting from spontaneous and laser emission. Finally, we report the measured level of the Amplified Spontaneous Emission, which is found to be less than 0.1 mW.","PeriodicalId":156432,"journal":{"name":"Advances in Optical Technologies","volume":"65 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126693159","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
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