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International Conference on Photonics, Optics and Laser Technology最新文献

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Ultra-Sensitivity Widefield, Confocal Surface Plasmon Interferometry Using Sequential Coding 使用顺序编码的超灵敏度宽视场共聚焦表面等离子体干涉测量
International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0011892300003408
Suejit Pechprasarn
{"title":"Ultra-Sensitivity Widefield, Confocal Surface Plasmon Interferometry Using Sequential Coding","authors":"Suejit Pechprasarn","doi":"10.5220/0011892300003408","DOIUrl":"https://doi.org/10.5220/0011892300003408","url":null,"abstract":"","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124135880","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
The Role of a Discontinuous Free-Electron Density in Harmonic Generation from Metal Surfaces 不连续自由电子密度在金属表面谐波产生中的作用
International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0006645800980104
M. Scalora, M. Vincenti, D. Ceglia, N. Akozbek, M. Bloemer, J. Trull, C. Cojocaru
{"title":"The Role of a Discontinuous Free-Electron Density in Harmonic Generation from Metal Surfaces","authors":"M. Scalora, M. Vincenti, D. Ceglia, N. Akozbek, M. Bloemer, J. Trull, C. Cojocaru","doi":"10.5220/0006645800980104","DOIUrl":"https://doi.org/10.5220/0006645800980104","url":null,"abstract":"We discuss a dynamical model of harmonic generation that arises from surfaces that demarcate regions of discontinuous free electron densities. These circumstances can arise from a simple metal mirror, to more complex structures such as layered structures composed of different metals or a metal and a conducting oxide. Using a modified hydrodynamic model we examine the simple case of a metal mirror, assuming the surface is characterized by an electron cloud that spills out into vacuum and shields the internal portions of the remaining medium. We also assess the relative importance of additional nonlinear sources that arise when a free electron discontinuity is present, and show that under the right circumstances both second and third harmonic generation can be very sensitive to the nature, density and thickness of the free electron cloud. Our findings suggest the possibility to control surface harmonic generation through surface charge engineering.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125277596","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
Evaluation of Simulator Incorporating Non-equilibrium Green's Function and Improvement of Quantum Cascade Lasers Output using the Simulator 含非平衡格林函数模拟器的评价及利用该模拟器提高量子级联激光器输出
International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0009101100580063
S. Takagi, H. Tanimura, T. Kakuno, R. Hashimoto, K. Kaneko, S. Saito
{"title":"Evaluation of Simulator Incorporating Non-equilibrium Green's Function and Improvement of Quantum Cascade Lasers Output using the Simulator","authors":"S. Takagi, H. Tanimura, T. Kakuno, R. Hashimoto, K. Kaneko, S. Saito","doi":"10.5220/0009101100580063","DOIUrl":"https://doi.org/10.5220/0009101100580063","url":null,"abstract":": We applied a simulator incorporating a non-equilibrium Green’s function (NEGF) to quantum cascade laser (QCL) wavelength prediction, and confirmed its validity including its temperature dependence. In addition, the electroluminescence (EL) intensity of the QCL was increased by a factor of 1.4 by including a structure that made the light-emitting layer barrier thin calculated using the simulator. The NEGF is used to calculate the electron density existing in the QCL and the laser gain. To examine the validity of wavelength calculation, we calculated the oscillation wavelengths for the seven types of film structure in the 3 to 9 µm band in our references, and compared them with the experimental results. As a result, the difference between them was well below 0.36 µm. Furthermore, the film structure for increasing the gain was calculated on the basis of the structure reported in one of the references. The gain was increased 1.17 to 1.28 times by reducing the thicknesses of the barriers by 10%. The QCLs with this film structure were prototyped and their EL output intensity was measured. It was confirmed that the EL output intensity output was improved and the film structure design obtained using the simulator was effective.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114619352","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
Raman Spectroscopy for Tumor Diagnosis in Mammary Tissue 乳腺组织肿瘤的拉曼光谱诊断
International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0009093501310134
S. Pimenta, Marino de Jesus Correia Maciel, Alice Miranda, M. Cerqueira, P. Alpuim, J. Correia
{"title":"Raman Spectroscopy for Tumor Diagnosis in Mammary Tissue","authors":"S. Pimenta, Marino de Jesus Correia Maciel, Alice Miranda, M. Cerqueira, P. Alpuim, J. Correia","doi":"10.5220/0009093501310134","DOIUrl":"https://doi.org/10.5220/0009093501310134","url":null,"abstract":": This paper demonstrates the potential of Raman spectroscopy in the ex-vivo analysis of resected normal and tumor mammary mouse glands, using a commercial confocal Raman microscope. The Raman spectra were acquired with a 785 nm excitation laser at 40 mW and using an integration time of 2 s. The Raman spectra for normal and tumor mouse mammary glands are presented and compared with literature results. The Raman spectrum of normal mammary mouse gland is dominated by lipid signatures. On the other hand, the Raman spectrum of tumor mammary gland is dominated by DNA and protein signatures. The molecular information obtained by using Raman spectroscopy can be fundamental for a more precise and complete diagnosis of tumors, for intraoperative assessment of tumors margins during surgeries and for tumors grade classification.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122400651","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
Barrier Structure for Ga-Free Type-II Superlattice Midwave Infrared Photodetector 无ga型超晶格中波红外光电探测器的势垒结构
International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0011624500003408
P. Christol, M. Bouschet, J. Perez, N. Péré-Laperne
{"title":"Barrier Structure for Ga-Free Type-II Superlattice Midwave Infrared Photodetector","authors":"P. Christol, M. Bouschet, J. Perez, N. Péré-Laperne","doi":"10.5220/0011624500003408","DOIUrl":"https://doi.org/10.5220/0011624500003408","url":null,"abstract":"","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126930047","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
Research Progress of Fiber-based Coherent Polarization Beam Combining for Free-Space Optical Communications in IOE, CAS 自由空间光通信光纤相干偏振束组合技术研究进展
International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0006533200170023
Yan Yang, C. Geng, Xinyang Li, Feng Li, Guan Huang
{"title":"Research Progress of Fiber-based Coherent Polarization Beam Combining for Free-Space Optical Communications in IOE, CAS","authors":"Yan Yang, C. Geng, Xinyang Li, Feng Li, Guan Huang","doi":"10.5220/0006533200170023","DOIUrl":"https://doi.org/10.5220/0006533200170023","url":null,"abstract":"Multi-aperture receiver with phased array is an effective approach to overcome the atmospheric turbulence effect on the performance of the fiber-based free-space optical (FSO) communications, where how to combine the multiple beams received by the sub-apertures efficiently is one of the key techniques. In this paper, we report on the research progress of the fiber-based coherent polarization beam combining (CPBC) in IOE, CAS, which is a promising beam combining solution for coherent FSO communications employing the multi-aperture receiver. Phase-locking control and polarization-transforming control were proposed to combine linearly polarized beams with orthogonal polarizations into one linearly polarized beam efficiently, and three fiber-based CPBC schemes were proposed and experimentally validated.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123028140","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
Imaging System Front-End at 202GHz Using LO/RF Isolation of Harmonic Mixer for Illumination 采用LO/RF隔离谐波混频器照明的202GHz成像系统前端
International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0011685400003408
A. Torabi
{"title":"Imaging System Front-End at 202GHz Using LO/RF Isolation of Harmonic Mixer for Illumination","authors":"A. Torabi","doi":"10.5220/0011685400003408","DOIUrl":"https://doi.org/10.5220/0011685400003408","url":null,"abstract":"","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127882905","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
A Sensor for the Optical Detection of Dangerous Road Condition 一种用于危险路况光学检测的传感器
International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0007572002830288
A. Piccardi, L. Colace
{"title":"A Sensor for the Optical Detection of Dangerous Road Condition","authors":"A. Piccardi, L. Colace","doi":"10.5220/0007572002830288","DOIUrl":"https://doi.org/10.5220/0007572002830288","url":null,"abstract":"We present the design, realization and characterization of a sensor for the optical detection of hazardous road condition. The device exploits the radiation from a incoherent source to detect the polarized components of the light scattering from a rough surface and calculate a signal dependent on the surface state. We propose two distinct geometries, working with forward and backward scattering components, assessing the device performance in terms of reliability and compactness. In both cases, the sensor allows to discriminate potentially dangerous states like the presence of water (either wet surface or covered by a layer) or ice on an asphalt sample, in opposition to the dry surface representing a safe condition.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"44 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128916050","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
Optimization of Coupling Efficiency of Fiber Optic Rotary Joint by Ray Tracing 光线追踪法优化光纤旋转接头耦合效率
International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0008895200710075
C. Chou, Rou-Jhen Chen, H. Tsai, Kuo-Cheng Huang, Chih-Chung Yang
{"title":"Optimization of Coupling Efficiency of Fiber Optic Rotary Joint by Ray Tracing","authors":"C. Chou, Rou-Jhen Chen, H. Tsai, Kuo-Cheng Huang, Chih-Chung Yang","doi":"10.5220/0008895200710075","DOIUrl":"https://doi.org/10.5220/0008895200710075","url":null,"abstract":"In the paper, a misalignment and field magnification tolerance analysis for the coupling efficiency of fiber optic rotary joint was presented. The analysis consisted of output position deviations from different wavelengths, dove prism manufacturing errors, light tilt and decenter errors. It helped manufacturers easily defined component specifications and assembly tolerances for fiber optic rotary joint. The 2 mm spot size was best suited for current assembly tolerances. The 2 mm beam diameter of coupling efficiency was over 80% in the tilt error ±10 arcmin and decenter error ±250 μm. In the future, we could create a FORJ system according to the simulation parameters. The practice experiment data would compare to our simulation results that used to prove our simulation results.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115607400","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
Comparative Study of Two Approaches for Application of Terrestrial Laser Scanner in Structural Health Monitoring and Damage Assessment 地面激光扫描仪在结构健康监测和损伤评估中的两种应用方法的比较研究
International Conference on Photonics, Optics and Laser Technology Pub Date : 1900-01-01 DOI: 10.5220/0010992000003121
S. Takhirov
{"title":"Comparative Study of Two Approaches for Application of Terrestrial Laser Scanner in Structural Health Monitoring and Damage Assessment","authors":"S. Takhirov","doi":"10.5220/0010992000003121","DOIUrl":"https://doi.org/10.5220/0010992000003121","url":null,"abstract":"The main objective of the paper was to evaluate two approaches aimed at tracking small displacements. The first approach is based on the usage of laser targets commonly used for stitching point clouds together. The second approach is based on the estimation of a corner of a prismatic shape and utilizes thin horizontal slices of the shape’s point cloud. The corner’s location is estimated as an intersection of two straight lines best fitted to the point clouds before and after the corner. It was shown that for both approaches a sub-millimetre accuracy can be achieved. The first approach requires the installation of two laser targets in order to measure the change of the distance between them. The second approach offers more flexibility because it does not require the installation of a laser target. Hence it can be used in the quantitative assessment of structural damage in the aftermath of natural disasters such as earthquakes, fires, tsunamis, landslides and hurricanes,","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114930947","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
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