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Development Issues for MCP-Based Spatial Light Modulators 基于mcp的空间光调制器的发展问题
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1988.wd2
John N. Lee, A. Fisher
{"title":"Development Issues for MCP-Based Spatial Light Modulators","authors":"John N. Lee, A. Fisher","doi":"10.1364/slma.1988.wd2","DOIUrl":"https://doi.org/10.1364/slma.1988.wd2","url":null,"abstract":"Several of the most critically needed characteristics for two-dimensional (2-D) spatial light modulators (SLMs) include i)high input sensitivity, ii)high resolution, iii)long storage times, iv)high speed, and v)large dynamic range. One would desire to maximize all these characteristics simultaneously, but in actuality there exist tradeoffs that prohibit complete freedom in optimizing one parameter in isolation from the others. The microchannel-plate (MCP) devices, however, can be shown to have tradeoff points allowing unique performance in several of the above characteristics. The use of an MCP electron amplifier allows for internal signal gain, unlike most other SLMs where the output signal gain can be increased only by increasing the readout light level. Thus, detection and processing of very low signal levels, such as often encountered in multistage and feedback processing, becomes feasible. Further, MCP-based devices can intrinsically perform special image-processing operations (see Sec. III below).","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"6 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":"132608289","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: 3
Development and Applications of a Truly Bistable Optically Addressed Spatial Light Modulator 一种真正双稳态光寻址空间光调制器的研制与应用
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1990.tuc6
R. Chittick, W. Crossland, J. Brocklehurst, P. Cambon, M. Killinger, J. de Bougrenet de la Tocnaye
{"title":"Development and Applications of a Truly Bistable Optically Addressed Spatial Light Modulator","authors":"R. Chittick, W. Crossland, J. Brocklehurst, P. Cambon, M. Killinger, J. de Bougrenet de la Tocnaye","doi":"10.1364/slma.1990.tuc6","DOIUrl":"https://doi.org/10.1364/slma.1990.tuc6","url":null,"abstract":"Optically addressed spatial light modulators (OASLMs) have potential applications in a wide range of computing and processing systems. The recent advent of fast devices using ferroelectric liquid crystals 1-3 has led to a rapid expansion of interest in a number of these areas. However, some applications such as beam steering4 and cellular image processing require a device that is not only fast, but is able to retain the image in the absence of write information or drive voltage so that processing with the read beam can proceed without interference from the write beam. In this paper we report the development of such a latching device and some preliminary experiments using it.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","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":"115236677","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 Modulator using Semi-Insulating Multiple Quantum Well Material 半绝缘多量子阱材料空间光调制器
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1993.swa.2
A. Partovi, A. Glass, T. Chiu
{"title":"Spatial Light Modulator using Semi-Insulating Multiple Quantum Well Material","authors":"A. Partovi, A. Glass, T. Chiu","doi":"10.1364/slma.1993.swa.2","DOIUrl":"https://doi.org/10.1364/slma.1993.swa.2","url":null,"abstract":"In recent years, the large excitonic electroabsorptive nonlinearities of multiple quantum wells (MQWs) has been used for electrically as well as optically addressed two dimensional optical modulators.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"76 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":"116304703","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 Image Processing Features of Optically Addressed Liquid Crystal Light Modulators 光寻址液晶光调制器的光学图像处理特性
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1995.lthc3
A. Parfenov
{"title":"Optical Image Processing Features of Optically Addressed Liquid Crystal Light Modulators","authors":"A. Parfenov","doi":"10.1364/slma.1995.lthc3","DOIUrl":"https://doi.org/10.1364/slma.1995.lthc3","url":null,"abstract":"Spatial light modulators (SLM) are considered as the main elements of optical data processing systems. Liquid crystal SLMs (LC SLM) have high performance parameters, and are normally used in optical systems as image transducers and optical filters. Whereas LC SLMs are able to increase the list of their applications due some image processing features. These features are appeared when SLM internal structure properly taken into account during SLM construction. Combination of these features with high performance SLM parameters could improve a flexibility and productivity of optical methods and is able to simplify optical setup.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"71 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":"114910019","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 Spatially Segmented Design Appraoch to Spatial Light Modulators 空间光调制器的空间分段设计方法
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1988.thc4
R. Athale, Sing H. Lee, Sadik Essner
{"title":"A Spatially Segmented Design Appraoch to Spatial Light Modulators","authors":"R. Athale, Sing H. Lee, Sadik Essner","doi":"10.1364/slma.1988.thc4","DOIUrl":"https://doi.org/10.1364/slma.1988.thc4","url":null,"abstract":"All optically addressed spatial light modulators (SLM) contain the functionalities of detection of input light pattern and corresponding modulation of the readout beam. These two functions are often performed by two physically distinct parts, although in some cases the same material or structure performs these two functions. The isolation between these two functionalities of an SLM is an important feature, which can be achieved using several different approaches: (1) wavelength seperation between read and write signals, (2) seperation along the direction perpendicular to the device plane, (3) seperation along a direction within the device plane.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"87 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":"123542276","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
Bipolar Joint Transform Image Correlator 双极联合变换图像相关器
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1988.fb2
B. Javidi, C. Kuo, S. Odeh
{"title":"Bipolar Joint Transform Image Correlator","authors":"B. Javidi, C. Kuo, S. Odeh","doi":"10.1364/slma.1988.fb2","DOIUrl":"https://doi.org/10.1364/slma.1988.fb2","url":null,"abstract":"Recently, we have introduced a bipolar joint transform image correlator+ with substantially superior performance compared to the classical optical correlator. The bipolar image correlator uses nonlinearity at the Fourier plane to binarize the Fourier transforms’ interference intensity to only two values, 1 and -1. The performance of the bipolar optical correlator has been compared to the classical optical correlator in the areas of light efficiency, correlation peak to sidelobe ratio, autocorrelation bandwidth, and cross-correlation sensitivity. The correlation signals obtained by the conventional technique suffer from low light efficiency, large correlation sidelobes, large autocorrelation bandwidth, and low discrimination ability. It was shown that compared to the classical correlator, the bipolar joint transform correlator provides significantly higher peak intensity, larger peak to sidelobe ratio, narrower autocorrelation bandwidth, and better cross-correlation sensitivity. The bipolar joint transform correlator produces delta function-like autocorrelation signals, and much narrower and smaller zero order term on the optical axis. Since the autocorrelation functions have delta function features, larger reference images can be used and the restrictions on the locations of the images and their autocorrelation bandwidth, which exists for the classical joint Fourier transform correlator, is eliminated.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"20 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":"123640920","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 of an optically addressed spatial light modulator sensitive to 1.55-μm write light 对1.55 μm写入光敏感的光寻址空间光调制器设计
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1995.ltha2
Li Wang, G. Moddel, G. Burdge
{"title":"Design of an optically addressed spatial light modulator sensitive to 1.55-μm write light","authors":"Li Wang, G. Moddel, G. Burdge","doi":"10.1364/slma.1995.ltha2","DOIUrl":"https://doi.org/10.1364/slma.1995.ltha2","url":null,"abstract":"Most optically addressed spatial light modulators (OASLMs) utilize photosensors of hydrogenated amorphous silicon (a-Si:H), Si, GaAs, CdS, CdSe or other photosensors which are sensitive from visible to near IR wavelengths (< 1.1 µm). Some applications such as correction of atmospheric turbulence in the eye-safe region of the spectrum for free-space optical communication demand OASLMs that have high sensitivity at 1.55 µm, high frame rate (> 1 kHz), and high resolution (MTF = 50% at 40 lp/mm). Ferroelectric liquid crystal (FLC) has very fast response and FLC OASLMs can be operated at frame rates of a few kHz[l]. An IR-OASLM with an In0.53Ga0.47As-InP photosensor and an FLC light modulating layer is being developed in our laboratories. The design, preliminary experimental results, and practical issues for such an IR-OASLM will be presented and discussed.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"12 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":"128519781","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
A 2-D Optically Addressed Silicon/PLZT Spatial Light Modulator Array 二维光寻址硅/PLZT空间光调制器阵列
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1988.thc3
T. Lin, J. Wang, S. Dasgupta, S. Esener, S. H. Lee
{"title":"A 2-D Optically Addressed Silicon/PLZT Spatial Light Modulator Array","authors":"T. Lin, J. Wang, S. Dasgupta, S. Esener, S. H. Lee","doi":"10.1364/slma.1988.thc3","DOIUrl":"https://doi.org/10.1364/slma.1988.thc3","url":null,"abstract":"Optically addressed spatial light modulators (OSLM) are an important component for the implementation of massively parallel high performance opto-electronic computers. Such devices are particularly useful for applications such as optical logic and memory, wavelength and coherence transformations and 2-D filtering. The technology which combines silicon for detection and computation and electro-optic PLZT (Pb0.9La0.1 [Zr0.65Ti0.35]0.97503) for optical modulation allows the realization of such SLMs. These two materials combine the computational power of silicon and the parallel communication capability of optics. In this paper we report the successful fabrication of 2 × 2 OSLM arrays using polycrystalline silicon deposited on a PLZT substrate. We detail the device design considerations, describe the experimental techniques utilized and discuss the resulting OSLM performance.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"6 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":"130819157","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
Nonlinear spatial operators using optically addressed ferroelectric spatial light modulators 使用光学寻址铁电空间光调制器的非线性空间算子
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1990.tuc7
M. Killinger, P. Cambon, J. de Bougrenet de la Tocnaye, R. Chittick, J. Brocklehurst
{"title":"Nonlinear spatial operators using optically addressed ferroelectric spatial light modulators","authors":"M. Killinger, P. Cambon, J. de Bougrenet de la Tocnaye, R. Chittick, J. Brocklehurst","doi":"10.1364/slma.1990.tuc7","DOIUrl":"https://doi.org/10.1364/slma.1990.tuc7","url":null,"abstract":"Non linear operators have been proved to play a major part in optical computing particularly for neural networks or more generally for Artificial Intelligence procedures involving complex decision rules [1]. Usually a nonlinear operator (NL) gives a zero response for a low input level, a fixed saturated one for a high sufficient value and shows a monotonic transition regime. The latter is generally not considered in the literature for applications in optics, although some recent studies have demonstrated the importance of the degree of the NL characteristic for pattern recognition invariancy, based on template matching classifiers using multilinear pattern decomposition and counting networks [2], Although NL operators are generally the domain of electronics because of higher flexibility, speed and easier handling, electronics is no longer of any interest as soon as such operations have to be performed spatially, which is the case in the latter example. Optical devices exhibiting NL behaviour are numerous [3]. In this paper, we present a solution which seems promising because of its easy handling, its high spatial resolution, the presence of different NL phases as well as the possibility of adjusting these NL characteristics, hence allowing, in the short term, the evaluation of many optical implementations of complex procedures such as described in [2].","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":"122830583","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
Potential Field Computation for Robotic Path Planning Using a Microchannel SLM 基于微通道SLM的机器人路径规划位场计算
Spatial Light Modulators and Applications Pub Date : 1900-01-01 DOI: 10.1364/slma.1993.swc.1
M. B. Reid
{"title":"Potential Field Computation for Robotic Path Planning Using a Microchannel SLM","authors":"M. B. Reid","doi":"10.1364/slma.1993.swc.1","DOIUrl":"https://doi.org/10.1364/slma.1993.swc.1","url":null,"abstract":"A microchannel SLM is employed to demonstrate the optical calculation of potential field maps for mobile robot navigation. In one MSLM mode, written patterns expand spatially, and this characteristic is used to create an extended two dimensional function representing the influence of the goal in a robot's workspace. The optical calculation time scales favorably in comparison to digital electronic computation.","PeriodicalId":188204,"journal":{"name":"Spatial Light Modulators and Applications","volume":"27 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":"127677913","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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