Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications最新文献_第5页

Optical and electrical characterization of CdS-Glycine thin films with ammonia free buffer grown at different temperatures for solar cells applications 具有无氨缓冲液的cds -甘氨酸薄膜在不同温度下的光学和电学特性

Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications Pub Date : 2013-11-18 DOI: 10.1117/12.2026481

D. Berman-Mendoza, D. Quiñones-Urías, S. Ferra-González, A. Vera-Marquina, A. Rojas-Hernández, R. Gómez Fuentes, A. García-Juárez, A. L. Leal-Cruz, A. Ramos-Carrasco

{"title":"Optical and electrical characterization of CdS-Glycine thin films with ammonia free buffer grown at different temperatures for solar cells applications","authors":"D. Berman-Mendoza, D. Quiñones-Urías, S. Ferra-González, A. Vera-Marquina, A. Rojas-Hernández, R. Gómez Fuentes, A. García-Juárez, A. L. Leal-Cruz, A. Ramos-Carrasco","doi":"10.1117/12.2026481","DOIUrl":"https://doi.org/10.1117/12.2026481","url":null,"abstract":"In this work we report the fabrication and electro-optical characterization of CdS thin films using glycine as complexing agent with ammonia and ammonia free buffer by the Chemical Bath Deposition (CBD) method. The CdS thin films were grown at different temperatures of 50, 60, 70 and 80 °C in a thermal water bath. The morphology of these films was determined using atomic force microscopy; the resultant films were homogeneous, well adhered to the substrate, and specularly reflecting with a varying color depending on the deposition temperature. Transmittance and reflectance measurements of thermally treated CdS films were carried to study the effect of the ammonia buffer on its optical properties and bandgap. The crystallinity of the CdS thin films was determined by means of X Ray diffraction measurements. Therefore, for this study, an ammonia-free complexing agent has been taken for the deposition of CdS. Among different methods, which are being used for the preparation of CdS films, Chemical Bath Deposition (CBD) is the most attractive due to its low cost, easy to handle and large possibilities regarding doping and deposition on various substrates. In particular it can be used to easily obtain field effect devices by depositing CdS thin films over a SiO2/Si substrate. Heterostructures with interesting physical properties can be imagined, realized and tested in this way.. Structures CdS/PbS also were realized and have shown good solar cell characteristics.","PeriodicalId":135913,"journal":{"name":"Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115292782","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

Determining the quality of optical fiber splice by fusion by electric arc through spectral image processing 通过光谱图像处理确定电弧熔接光纤接头的质量

Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications Pub Date : 2013-11-18 DOI: 10.1117/12.2025271

F. Vega, C. Torres, L. Díaz, L. Mattos

引用次数: 0

Analysis of temporal stability of autostereoscopic 3D displays 自动立体三维显示器的时间稳定性分析

Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications Pub Date : 2013-11-18 DOI: 10.1117/12.2025807

M. Rubiño, C. Salas, A. M. Pozo, J. J. Castro, F. Pérez-Ocón

{"title":"Analysis of temporal stability of autostereoscopic 3D displays","authors":"M. Rubiño, C. Salas, A. M. Pozo, J. J. Castro, F. Pérez-Ocón","doi":"10.1117/12.2025807","DOIUrl":"https://doi.org/10.1117/12.2025807","url":null,"abstract":"An analysis has been made of the stability of the images generated by electronic autostereoscopic 3D displays, studying the time course of the photometric and colorimetric parameters. The measurements were made on the basis of the procedure recommended in the European guideline EN 61747-6 for the characterization of electronic liquid-crystal displays (LCD). The study uses 3 different models of autostereoscopic 3D displays of different sizes and numbers of pixels, taking the measurements with a spectroradiometer (model PR-670 SpectraScan of PhotoResearch). For each of the displays, the time course is shown for the tristimulus values and the chromaticity coordinates in the XYZ CIE 1931 system and values from the time periods required to reach stable values of these parameters are presented. For the analysis of how the procedure recommended in the guideline EN 61747-6 for 2D displays influenced the results, and for the adaption of the procedure to the characterization of 3D displays, the experimental conditions of the standard procedure were varied, making the stability analysis in the two ocular channels (RE and LE) of the 3D mode and comparing the results with those corresponding to the 2D. The results of our study show that the stabilization time of a autostereoscopic 3D display with parallax barrier technology depends on the tristimulus value analysed (X, Y, Z) as well as on the presentation mode (2D, 3D); furthermore, it was found that whether the 3D mode is used depends on the ocular channel evaluated (RE, LE).","PeriodicalId":135913,"journal":{"name":"Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121183905","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

Lightons: phonons with light 光子:带光的声子

Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications Pub Date : 2013-11-18 DOI: 10.1117/12.2027613

N. Silva, M. Carvalho, Ariel Guerreiro

引用次数: 1

Ag-nanowire metamaterials: spectral reflectance analysis and homogenization models 银纳米线超材料:光谱反射分析和均匀化模型

Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications Pub Date : 2013-11-18 DOI: 10.1117/12.2027626

I. Leite, Anderson O. Silva, A. Hierro-Rodríguez, C. T. Sousa, M. P. Fernández-García, J. Teixeira, J. P. Araújo, M. T. Giraldi, João Costa, Diana Viegas, Pedro A. S. Jorge, Ariel Guerreiro

引用次数: 7

Analysis of the propagation of flat-topped beam in nonlinear optical fiber 平顶光束在非线性光纤中的传播分析

Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications Pub Date : 2013-11-18 DOI: 10.1117/12.2021149

D. Avila, C. Torres

引用次数: 3

Coupling for capturing an displaying hologram systems for real-time digital holographic interferometry 用于实时数字全息干涉测量的捕获和显示全息图系统的耦合

Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications Pub Date : 2013-11-18 DOI: 10.1117/12.2021692

R. Porras-Aguilar, W. Zaperty, M. Kujawińska

{"title":"Coupling for capturing an displaying hologram systems for real-time digital holographic interferometry","authors":"R. Porras-Aguilar, W. Zaperty, M. Kujawińska","doi":"10.1117/12.2021692","DOIUrl":"https://doi.org/10.1117/12.2021692","url":null,"abstract":"Conventional (analog) holographic interferometry (HI) has been used as a powerful technique in optical metrology since sixties of XX century. However, its practical applications have been constrained because of the cumbersome procedures required for holographic material development. Digital holography has brought significant simplifications due to digital capture of holograms and their further numerical reconstruction and manipulation of reconstructed phases and amplitudes. These features are the fundamentals of double exposure digital holographic interferometry which nowadays is used in such applications as industrial inspection, medical imaging, microscopy and metrology. However another very popular HI technique, namely real time holographic interferometry has not been demonstrated in its digital version. In this paper we propose the experimental-numerical method which allows for real-time DHI implementation. In the first stage a set of digital phase shifted holograms of an object in an initial condition is captured and the phase of an object wavefront in the hologram plane is calculated. This phase is used to address a spatial light modulator, which generates the initial object wavefront. This wavefront (after proper SLM calibration) propagates toward an object and interfere with an actual object wavefront giving real-time interference fringes. The procedure works correctly in the case when CCD camera and SLM LCOS pixel sizes are the same. Usually it is not the case. Therefore we had proposed two different methods which allow the overcome of this mismatch pixel problem. The first one compensates for lateral magnification and the second one is based on re-sampling of a captured phase. The methods are compared through numerical simulations and with experimental data. Finally, the implications of setting up the experiment with the object reference phase compensated by the two approaches are analyzed and the changes in an object are monitored in real time by DHI.","PeriodicalId":135913,"journal":{"name":"Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122776629","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

Influence of irradiation parameters in nanosecond Nd:YVO4 laser micro-machining of stainless steel for biomedical applications 辐照参数对纳秒Nd:YVO4激光生物医学用不锈钢微加工的影响

Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications Pub Date : 2013-11-18 DOI: 10.1117/12.2026162

M. P. Fiorucci, Ana J. López, A. Ramil

引用次数: 1

A diffuse reflectance spectroscopy system to study biological tissues 用于研究生物组织的漫反射光谱系统

Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications Pub Date : 2013-11-18 DOI: 10.1117/12.2026477

A. de la Cadena, S. Stolik, J. M. de la Rosa

{"title":"A diffuse reflectance spectroscopy system to study biological tissues","authors":"A. de la Cadena, S. Stolik, J. M. de la Rosa","doi":"10.1117/12.2026477","DOIUrl":"https://doi.org/10.1117/12.2026477","url":null,"abstract":"Diffuse reflectance spectroscopy (DRS) is a technique that allows the study of the structural and biochemical condition of tissues in a noninvasive-nonionizing way. DRS has been widely used in biomedical applications, mainly as an alternative to biopsy. Generally, the technique consists in the irradiation of a specific zone of a tissue with a reference spectrum. Then, the reemitted by the tissue light is detected. The changes suffered by the backscattered spectrum (after light-tissue interaction) with respect to the incident one carry information about the tissue properties. This work presents a novel system designed and developed to use DRS in biomedical applications. The system uses a LED as a light source and a specially designed optical fiber probe as a mean to deliver the light to the tissue surface, and to collect the reemitted photons from the studied sample. This probe was designed to accomplish two different tasks: to increase the sensitivity of the diagnosis; and to study the radial dependence of the backscattered light. The measuring probe was built in a way that allows taking readings when the exerted pressure on the tissue reaches certain predetermined values.","PeriodicalId":135913,"journal":{"name":"Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132540460","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 discord of bipartite entangled non-linear coherent states 二部纠缠非线性相干态的量子不和谐

Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications Pub Date : 2013-11-18 DOI: 10.1117/12.2021622

E. Castro, A. Zambrano, C. Ladera, R. Gómez

{"title":"Quantum discord of bipartite entangled non-linear coherent states","authors":"E. Castro, A. Zambrano, C. Ladera, R. Gómez","doi":"10.1117/12.2021622","DOIUrl":"https://doi.org/10.1117/12.2021622","url":null,"abstract":"Quantum discord measures the fraction of the pair-wise mutual information that is locally inaccessible in a multipartite system. Nonzero quantum discord has interesting and significant applications because although non-zero entanglement guarantees the existence of quantum correlation in a bipartite quantum system, zero entanglement does not guarantee the absence of a quantum correlation. On the other hand, many quantum optics systems can be described as deformed quantum oscillators. In this work, we investigate the quantum discord of bipartite entangled nonlinear coherent states, in the context of the so-called f-deformed coherent states algebra. To calculate the quantum discord, we consider quasi- Werner mixed states bases on bipartite entangled f-deformed coherent states. Two explicit analytic expressions are derived for the quantum discord of two different nonlinear deformed coherent states. The first one considers deformed coherent states obtained as eigenstates of the annihilation deformed operator, and the second one is obtained by using a deformed displacement operator. We compare the quantum discord of those states, when the nonlinear deformation function is either associated with the SU(1,1) coherent states in the Gilmore-Perelomov or Barut-Girardello representations, respectively.","PeriodicalId":135913,"journal":{"name":"Iberoamerican Meeting of Optics and the Latin American Meeting of Optics, Lasers and Their Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133271215","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