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Topical Meeting on Holography最新文献

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Maximizing Diffraction Efficiency of Bleached, Time-Integration-Exposure, Silver Halide Holograms 最大化漂白，时间积分曝光，卤化银全息图的衍射效率
Topical Meeting on Holography Pub Date : 1900-01-01 DOI: 10.1364/holography.1986.tud1
W. Rhodes, R. Stroud, E. Gaynor
{"title":"Maximizing Diffraction Efficiency of Bleached, Time-Integration-Exposure, Silver Halide Holograms","authors":"W. Rhodes, R. Stroud, E. Gaynor","doi":"10.1364/holography.1986.tud1","DOIUrl":"https://doi.org/10.1364/holography.1986.tud1","url":null,"abstract":"Time-Integration holograms, where the exposure pattern is recorded as a sequentially applied sum of individual fringe patterns (either sinusoidal \"Young’s\" fringes or Gabor zone plates), suffer from poor diffraction efficiency and, consequently, low signal-to-noise ratio on reconstruction [1,2]. The reason is straightforward: The total exposure pattern, as in the case of incoherent holography [3], has a low signal-to-bias ratio when many contributing exposures--each bringing its own bias with it--are applied. Since the recorded signal exposure is low compared to the bias exposure, the signal variations in the wave amplitude transmittance function of the processed hologram are small, and diffraction efficiency is therefore low. At the same time, noise in the reconstruction, determined by such sources as dust- and film-grain-scattered light, remains at an essentially constant level.","PeriodicalId":394593,"journal":{"name":"Topical Meeting on Holography","volume":"53 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":"128228322","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
Improvement of diffraction efficency by baking for Lippman hologram 李普曼全息图烘烤法提高衍射效率的研究
Topical Meeting on Holography Pub Date : 1900-01-01 DOI: 10.1364/holography.1986.tud3
Atsuhiko Kusakabe, H. Yokota, H. Katsuma
{"title":"Improvement of diffraction efficency by baking for Lippman hologram","authors":"Atsuhiko Kusakabe, H. Yokota, H. Katsuma","doi":"10.1364/holography.1986.tud3","DOIUrl":"https://doi.org/10.1364/holography.1986.tud3","url":null,"abstract":"The diffraction efficiency can be increased by baking for Lippman hologram used silver halide material after developed. In this method, assumed that increaseing of refractive index difference of emulsion from baking process, we can make a report about this experiment and simulation to determined for the assumption.","PeriodicalId":394593,"journal":{"name":"Topical Meeting on Holography","volume":"29 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":"132351660","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
Design and Simulation of Synthetic Hologram Lenses in Uniaxial Media 单轴介质合成全息透镜的设计与仿真
Topical Meeting on Holography Pub Date : 1900-01-01 DOI: 10.1364/holography.1986.tua5
H. Turk, F. Froehlich
{"title":"Design and Simulation of Synthetic Hologram Lenses in Uniaxial Media","authors":"H. Turk, F. Froehlich","doi":"10.1364/holography.1986.tua5","DOIUrl":"https://doi.org/10.1364/holography.1986.tua5","url":null,"abstract":"The aberrations of Fresnel type grating lenses immersed in uniaxial waveguides are studied. Lens designs which account for the anisotropy and which are aplanatic are presented.","PeriodicalId":394593,"journal":{"name":"Topical Meeting on Holography","volume":"10 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":"128224846","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
Holographic Interferometry with Fringe Control and On-Line Digital Phase Measurement 带有条纹控制和在线数字相位测量的全息干涉测量
Topical Meeting on Holography Pub Date : 1900-01-01 DOI: 10.1364/holography.1986.ma4
M. Halioua, Toni Sue Bowins
{"title":"Holographic Interferometry with Fringe Control and On-Line Digital Phase Measurement","authors":"M. Halioua, Toni Sue Bowins","doi":"10.1364/holography.1986.ma4","DOIUrl":"https://doi.org/10.1364/holography.1986.ma4","url":null,"abstract":"Holographic interferometry has developed into a powerful and sensitive tool in industry and research for investigating surface deformation resulting from mechanical, thermal and vibrational stress. However, despite the vast amount of research, it has not yet resulted in a practical quantitative tool, and it remains often limited to the laboratory. In contrast to classical interferometry, the interpretation and quantification of holographic interferograms remains a complex and tedious task. This is essentially due to the fact that holographic interferometers are very sensitive to rigid body motion which can overshadow or even obliterate the deformation fringes, and that commonly used double exposure interferometers are inflexible since the interfering wavefronts are locked together.","PeriodicalId":394593,"journal":{"name":"Topical Meeting on Holography","volume":"185 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":"132672258","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
Holography as a Tool in the Gas Turbine Industry 全息术在燃气轮机工业中的应用
Topical Meeting on Holography Pub Date : 1900-01-01 DOI: 10.1364/holography.1986.mc3
K. Stetson
{"title":"Holography as a Tool in the Gas Turbine Industry","authors":"K. Stetson","doi":"10.1364/holography.1986.mc3","DOIUrl":"https://doi.org/10.1364/holography.1986.mc3","url":null,"abstract":"Jet aircraft engines comprise what is probably the most important segment of the gas turbine industry, and it is because these engines are critical to aircraft safety and performance that holographic techniques of measurement and inspection have found cost effective applications. The three major ones are vibration analysis, nondestructive bonding inspection, and flow visualization. Vibration analysis usually consists of recording time-average holograms of an object under vibration and observing Bessel-function fringes in the reconstructions. Bonding inspection is usually done by recording either time-average holograms with the object excited by high frecquency vibration or double-exposure holograms of the object before and after some form of stress. The hologram reconstructions show the differential movement of the regions of the object that are poorly bonded and allow identification of bonding flaws. Flow visualization usually involves recording double-exposure holograms of diffusely reflecting or transmitting objects through the gas flow. The fringes in the reconstruction allow determination of shock waves and gas density.","PeriodicalId":394593,"journal":{"name":"Topical Meeting on Holography","volume":"17 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":"124102218","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
Quantification of Holographic Interferograms: State of the Art Methods 全息干涉图的量化:最新的方法
Topical Meeting on Holography Pub Date : 1900-01-01 DOI: 10.1364/holography.1986.ma1
R. Pryputniewicz
{"title":"Quantification of Holographic Interferograms: State of the Art Methods","authors":"R. Pryputniewicz","doi":"10.1364/holography.1986.ma1","DOIUrl":"https://doi.org/10.1364/holography.1986.ma1","url":null,"abstract":"The problem of quantification of holographic interferograms is not trivial. Even today, 20 years after the invention of hologram interferometry, there is not yet a general method available that can be used reliably to interpret holographic fringe patterns to obtain information on displacements and/or deformations of arbitrary objects. However, a number of methods and systems have been developed for specific applications. The results that are being obtained using these methods are contributing to the further growth of holographic interferometry; the most promising of the methods used are those allowing automated interpretation of holograms.","PeriodicalId":394593,"journal":{"name":"Topical Meeting on Holography","volume":"19 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":"130470772","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
Anamorphic Imaging for Synthetic Holograms 合成全息图的变形成像
Topical Meeting on Holography Pub Date : 1900-01-01 DOI: 10.1364/holography.1986.md3
Michael A. Teitel, S. Benton
{"title":"Anamorphic Imaging for Synthetic Holograms","authors":"Michael A. Teitel, S. Benton","doi":"10.1364/holography.1986.md3","DOIUrl":"https://doi.org/10.1364/holography.1986.md3","url":null,"abstract":"Holographic stereograms synthesized from computer-graphic 2-D images rendered through idealized anamorphic optical systems permit penetration of the hologram plane without 3-D distortions.","PeriodicalId":394593,"journal":{"name":"Topical Meeting on Holography","volume":"3 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":"124414148","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: 4
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