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The Effect of Filter Pixelation on Optical Correlation 滤波像素化对光学相关的影响
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1990.tuc12
G. Gheen, E. Washwell, D. Armitage
{"title":"The Effect of Filter Pixelation on Optical Correlation","authors":"G. Gheen, E. Washwell, D. Armitage","doi":"10.1364/slma.1990.tuc12","DOIUrl":"https://doi.org/10.1364/slma.1990.tuc12","url":null,"abstract":"There are a number of factors that impinge upon the design of spatial light modulators (SLMs) for use in 2-dimensional optical correlators. Some of the issues that have received attention include: array size, contrast ratio, gray scale, electronic addressing, and approaches towards amplitude and phase modulation.1-3 Missing from this discussion are the problems associated with using a pixelated spatial filter and ways to remedy this problem. This is most unfortunate since most SLMs used in the filter plane have an inherent pixelated structure. The objective of this paper is to draw attention to this problem and propose a solution.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"26 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":"125372193","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
Spatial Light Modulators: Fundamental and Technological Issues 空间光调制器:基本和技术问题
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1988.we3
C. Kyriakakis, P. Asthana, R. V. Johnson, A. Tanguay
{"title":"Spatial Light Modulators: Fundamental and Technological Issues","authors":"C. Kyriakakis, P. Asthana, R. V. Johnson, A. Tanguay","doi":"10.1364/slma.1988.we3","DOIUrl":"https://doi.org/10.1364/slma.1988.we3","url":null,"abstract":"Numerous applications have been envisioned for spatial light modulators in optical information processing and computing systems [1, 2]. These applications can be summarized within the context of a generalized optical information processor or computer as shown schematically in Fig. 1 [2]. The principal functional roles of both one- and two-dimensional spatial light modulators include those of format, input, output, CPU, and memory devices. In addition, spatial light modulators can be effectively utilized to provide certain types of feedback interconnections, as for example in the case of optical crossbar switches and holographically encoded weighted interconnections.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"40 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":"126412157","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
Novel electron trapping (ET) spatial light modulator 新型电子俘获空间光调制器
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1990.tuc2
S. Jutamulia, G. Storti, J. Lindmayer, W. Seiderman
{"title":"Novel electron trapping (ET) spatial light modulator","authors":"S. Jutamulia, G. Storti, J. Lindmayer, W. Seiderman","doi":"10.1364/slma.1990.tuc2","DOIUrl":"https://doi.org/10.1364/slma.1990.tuc2","url":null,"abstract":"The parallelism and interconnection provided by an optical system is a major potential advantage for data transmission. However, a spatial light modulator (SLM) is required to process the optical information. Either amplitude, phase, or polarization would be modulated by the SLM, but coherence may not be affected. This would allow coherent or holographic processing to take place. However, information can also be carried by only the intensity in incoherent optical processing applications. The electron trapping (ET) SLM described in this paper demonstrates potential applications to both incoherent and coherent processing, although application to incoherent processing will be emphasized in this introductory demonstration.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"55 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":"121459227","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
Limitations of Currently Available Deformable Mirror Spatial Light Modulators 目前可用的可变形镜空间光调制器的局限性
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1988.thb3
D. Gregory, J. Kirsch
{"title":"Limitations of Currently Available Deformable Mirror Spatial Light Modulators","authors":"D. Gregory, J. Kirsch","doi":"10.1364/slma.1988.thb3","DOIUrl":"https://doi.org/10.1364/slma.1988.thb3","url":null,"abstract":"The Spatial Light Modulator (SLM) is perhaps the most critical element in several optical processing architectures such as the Vander Lugt Matched Filter Correlator and the Joint Transform Correlator. The SLM is a device used to encode information onto a laser beam so that it may be processed by a coherent optical system. Several devices are available which perform this critical task. The optical characteristics of these devices will determine, to a large extent, the speed, resolution, and efficiency of an optical system since the SLM is responsible for supplying the system with new information. The Hughes Liquid Crystal Light Valve (LCLV) is a reflection type SLM that is both optically addressed and read. The limitations of the LCLV are its low sensitivity to the write light, low resolution, and slow response time. The Semetex/Litton Magneto-Optic Device (MOD) is a transmission type SLM that is electrically addressed and optically read. The MOD is comparable in resolution to the LCLV but the optical throughput of the device is only 3-5%. Neither device will operate at high frame rates.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"24 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":"122336621","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 requirements for spatial light modulators for optical interconnection 光互连用空间光调制器的要求
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1993.sme.1
Hiroyuki Ichikawa, N. McArdle, M. Taghizadeh
{"title":"The requirements for spatial light modulators for optical interconnection","authors":"Hiroyuki Ichikawa, N. McArdle, M. Taghizadeh","doi":"10.1364/slma.1993.sme.1","DOIUrl":"https://doi.org/10.1364/slma.1993.sme.1","url":null,"abstract":"The spatial light modulator (SLM) is an instrument for real-time wavefront transformation.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"24 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":"121820314","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
Optical Characterization of Stripe Deformation in an Electroclinic Liquid Crystal 电斜液晶中条纹变形的光学表征
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1995.lthc4
J. Lindle, S. Flom, F. J. Bartoli, R. Shashidhar, B. Ratna, G. Crawford
{"title":"Optical Characterization of Stripe Deformation in an Electroclinic Liquid Crystal","authors":"J. Lindle, S. Flom, F. J. Bartoli, R. Shashidhar, B. Ratna, G. Crawford","doi":"10.1364/slma.1995.lthc4","DOIUrl":"https://doi.org/10.1364/slma.1995.lthc4","url":null,"abstract":"Recently the electroclinic effect in chiral smectic A (Sm A) liquid crystals has been the subject of increased study because of its potential for spatial light modulators with fast response and greyscale operation. For this application, a large contrast ratio is desirable and often essential. However, it has been observed1 that, when smectic A liquid crystals are subjected to an electric field and viewed between crossed polarizers, they exhibit distinctive periodic stripe domains due to a voltage deformation (kink) of the bookshelf geometry.2 The molecular alignment is reported to alternate between stripes, reducing the contrast ratio and imposing performance limitations on electrooptic devices based on these materials. In this investigation, we report spatially resolved measurements on a smectic A liquid crystal, performed using a novel technique to probe the optical properties with micron resolution. The effect of the stripe formation on the electrooptic properties of the Sm A liquid crystal KN125 is investigated.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"14 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":"128034639","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
An Optical Intensity and Polarization Coded Ternary Number System 一种光强偏振编码三进制数系统
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1988.the1
Shing-hong Lin
{"title":"An Optical Intensity and Polarization Coded Ternary Number System","authors":"Shing-hong Lin","doi":"10.1364/slma.1988.the1","DOIUrl":"https://doi.org/10.1364/slma.1988.the1","url":null,"abstract":"The lack of practical multiple-valued logic devices has in the past discouraged extensive investigation into multiple-valued logic. Recently, however, a number of optical processors have been presented to perform either multiple-valued logic functions[1,2], modified signed-digit arithmetic[3], or residue arithmetic[4]. Most of these implementations utilize position coding for the representation of residue numbers or multiple-valued numbers. For example, 9 pixels are needed to represent the combinations of two ternary inputs, and only one of the pixels will be turned ON at a time. As a result, the spatial utilization of input SLM (spatial light modulator) plane is quite low. In this paper, a new ternary number representation, which make use of both intensity and polarization codings, is proposed to perform both ternary logic operations and modified signed-digit arithmetic. The advantages of this system are that only one pixel is used to carry 1-bit information, and the conventional optical logic array[5] and SLMs, which are designed for binary system implementation, can be used in the proposed ternary system.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"28 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":"122656275","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
Optically addressed zero-crossing edge detection spatial light modulator 光寻址过零边缘检测空间光调制器
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1993.smd.5
D. Jared, K. Johnson
{"title":"Optically addressed zero-crossing edge detection spatial light modulator","authors":"D. Jared, K. Johnson","doi":"10.1364/slma.1993.smd.5","DOIUrl":"https://doi.org/10.1364/slma.1993.smd.5","url":null,"abstract":"This paper describes an optoelectronic system that performs zero-crossing edge detection using an VLSI, ferroelectric liquid crystal (FLC) spatial light modulator (SLM).","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"38 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":"131453020","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
Electroholographic Spatial Light Modulators 电全息空间光调制器
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1995.lthb1
A. Agranat
{"title":"Electroholographic Spatial Light Modulators","authors":"A. Agranat","doi":"10.1364/slma.1995.lthb1","DOIUrl":"https://doi.org/10.1364/slma.1995.lthb1","url":null,"abstract":"We present a new generic architecture for spatial light modulators (SLM), based on the concept of electroholography (EH). The pixel of the EH-SLM is a minute prestored volume hologram, the diffraction efficiency of which is controlled by a locally applied electric field.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"39 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":"131560086","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
Issues in Improving the Performance of Liquid-Crystal-over-Silicon Spatial Light Modulators 提高液晶-硅基空间光调制器性能的若干问题
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1993.stua.2
I. Underwood, D. Vass, A. O'hara, D. C. Burns
{"title":"Issues in Improving the Performance of Liquid-Crystal-over-Silicon Spatial Light Modulators","authors":"I. Underwood, D. Vass, A. O'hara, D. C. Burns","doi":"10.1364/slma.1993.stua.2","DOIUrl":"https://doi.org/10.1364/slma.1993.stua.2","url":null,"abstract":"The marriage of the two technologies of Very Large Scale Integrated (VLSI) silicon backplane active drive and Ferroelectric Liquid Crystal (FLC) light modulating layers has attracted much attention as a promising means of implementing compact high performance, smart and advanced Spatial Light Modulators (SLMs)[1].","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"296 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":"116521681","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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