Applications of Optics and Photonics最新文献_第10页

First approach on the Haar Transform applied with a 2 x 2 multimode interferometer 用2 × 2多模干涉仪应用哈尔变换的第一种方法

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2272146

J. Fernandes, Francisco Rodrigues, M. Lima, A. Teixeira

引用次数: 3

Physical ray-tracing method for anisotropic optical media in GPGPU GPGPU中各向异性光介质的物理光线追踪方法

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2272144

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

引用次数: 2

Optical microtopographic inspection of asphalt pavement surfaces 沥青路面表面的光学显微形貌检测

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2270880

Manuel F. M. Costa, E. Freitas, H. Torres, V. Cerezo

引用次数: 1

Using DSLR cameras in digital holography 数码全息摄影中使用数码单反相机

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2275672

D. Hincapie-Zuluaga, J. Herrera-Ramírez, J. Garcia-Sucerquia

{"title":"Using DSLR cameras in digital holography","authors":"D. Hincapie-Zuluaga, J. Herrera-Ramírez, J. Garcia-Sucerquia","doi":"10.1117/12.2275672","DOIUrl":"https://doi.org/10.1117/12.2275672","url":null,"abstract":"In Digital Holography (DH), the size of the bidimensional image sensor to record the digital hologram, plays a key role on the performance of this imaging technique; the larger the size of the camera sensor, the better the quality of the final reconstructed image. Scientific cameras with large formats are offered in the market, but their cost and availability limit their use as a first option when implementing DH. Nowadays, DSLR cameras provide an easy-access alternative that is worthwhile to be explored. The DSLR cameras are a wide, commercial, and available option that in comparison with traditional scientific cameras, offer a much lower cost per effective pixel over a large sensing area. However, in the DSLR cameras, with their RGB pixel distribution, the sampling of information is different to the sampling in monochrome cameras usually employed in DH. This fact has implications in their performance. In this work, we discuss why DSLR cameras are not extensively used for DH, taking into account the problem reported by different authors of object replication. Simulations of DH using monochromatic and DSLR cameras are presented and a theoretical deduction for the replication problem using the Fourier theory is also shown. Experimental results of DH implementation using a DSLR camera show the replication problem.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"43 3 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":"134283047","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

Surface enhanced Raman spectroscopy analysis of HeLa cells using a multilayer substrate 使用多层衬底的HeLa细胞表面增强拉曼光谱分析

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2272026

Iris Aguilar, J. Pichardo-Molina, T. López-Luke, Nancy Ornelas-Soto

引用次数: 0

2.05-μm Holmium-doped all-fiber continuous-wave laser at in-core diode-pumping at 1.125 μm 2.05 μm掺钬全光纤连续波激光器，泵浦波长为1.125 μm

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2276271

A. Kir'yanov, Y. Barmenkov

引用次数: 0

Multi-arm spectrometer for parallel frequency analysis of radio-wave signals oriented to astronomical observations 面向天文观测的无线电波信号平行频率分析的多臂光谱仪

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2276437

A. Shcherbakov, Miguel Chávez Dagostino, Adan Omar Arellanes, E. Tepichín Rodríguez

{"title":"Multi-arm spectrometer for parallel frequency analysis of radio-wave signals oriented to astronomical observations","authors":"A. Shcherbakov, Miguel Chávez Dagostino, Adan Omar Arellanes, E. Tepichín Rodríguez","doi":"10.1117/12.2276437","DOIUrl":"https://doi.org/10.1117/12.2276437","url":null,"abstract":"We describe a potential prototype of modern spectrometer based on acousto-optical technique with three parallel optical arms for analysis of radio-wave signals specific to astronomical observations. Each optical arm exhibits original performances to provide parallel multi-band observations with different scales simultaneously. Similar multi-band instrument is able to realize measurements within various scenarios from planetary atmospheres to attractive objects in the distant Universe. The arrangement under development has two novelties. First, each optical arm represents an individual spectrum analyzer with its individual performances. Such an approach is conditioned by exploiting various materials for acousto-optical cells operating within various regimes, frequency ranges, and light wavelengths from independent light sources. Individually produced beam shapers give both the needed incident light polarization and the required apodization for light beam to increase the dynamic range of the system as a whole. After parallel acousto-optical processing, a few data flows from these optical arms are united by the joint CCD matrix on the stage of the combined extremely high-bit rate electronic data processing that provides the system performances as well. The other novelty consists in the usage of various materials for designing wide-aperture acousto-optical cells exhibiting the best performances within each of optical arms. Here, one can mention specifically selected cuts of tellurium dioxide, bastron, and lithium niobate, which overlap selected areas within the frequency range from 40 MHz to 2.0 GHz. Thus one yields the united versatile instrument for comprehensive studies of astronomical objects simultaneously with precise synchronization in various frequency ranges.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"22 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":"131731474","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

Wavemeter improvements for laser diode calibration 激光二极管校准的波长改进

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2272010

I. Outumuro, J. Diz-Bugarin, J. L. Valencia, J. Blanco, B. Dorrio

引用次数: 0

Detection of low frequency, out-of-plane vibrations by the Talbot effect and adaptive photodetectors 利用塔尔博特效应和自适应光电探测器检测低频面外振动

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2276434

P. Rodríguez-Montero, E. Tepichin-Rodríguez, N. Korneev

{"title":"Detection of low frequency, out-of-plane vibrations by the Talbot effect and adaptive photodetectors","authors":"P. Rodríguez-Montero, E. Tepichin-Rodríguez, N. Korneev","doi":"10.1117/12.2276434","DOIUrl":"https://doi.org/10.1117/12.2276434","url":null,"abstract":"Detection and measurement of low frequency, out-of-plane vibrations play a very important role in several metrological applications. Classical interferometry is well suited for measuring small amplitudes of vibrations, ranging from picometers up to micrometers, but its use is limited to a laboratory environment. Here we consider the Talbot effect and the so-called adaptive photodetectors based on the non-steady-state photo-electromotive force effect for the measuring of low frequency, out-of-plane of vibrations of flat objects with rough surfaces and with amplitudes of vibrations in the order of microns. The adaptive photodetectors produce an electrical current proportional to the square of the visibility of the vibrating intensity pattern impinging on them. In the method here proposed, the vibrating object with rough surface is illuminated with a beam diffracted by a grating (a Ronchi grating), the light reflected by the object is collected by a lens and imaged on to a home-made GaAs adaptive photodetector. The electrical current from the adaptive photodetector is proportional to the instantaneous position of the vibrating object; this signal is monitored and measured with an oscilloscope connected to a lock-in output. The method is very robust and adequate for environments subjected to perturbations and presents the possibility of adjusting its dynamical range by modifying the period of the grating employed. Experimental results that verify our proposal are presented.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"34 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":"127383608","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

Electro-thermal effects in large area white-organic light emitting diodes 大面积白色有机发光二极管的电热效应

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2276382

M. Kumar, J. Gomes, A. Pinto, L. Pereira

引用次数: 1