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Operation of a multidither COAT system with a continuous-surface deformable mirror 具有连续面可变形镜的多抖动COAT系统的操作
Conference on Laser and Electrooptical Systems Pub Date : 1900-01-01 DOI: 10.1364/cleos.1976.thf7
J. Pearson, K. Brown, R. Finucane, S. Hansen, F. Mcclung, K. Price
{"title":"Operation of a multidither COAT system with a continuous-surface deformable mirror","authors":"J. Pearson, K. Brown, R. Finucane, S. Hansen, F. Mcclung, K. Price","doi":"10.1364/cleos.1976.thf7","DOIUrl":"https://doi.org/10.1364/cleos.1976.thf7","url":null,"abstract":"The use of multidither coherent optical adaptive techniques (COAT) is rapidly gaining acceptance as a useful tool for removing phase distortions that are introduced on a transmitted laser beam by its associated optical system or by the atmosphere. Earlier multidither COAT system demonstrations1,2 have used planar segmented-aperture piston mirrors for both the phase dither and phase correction functions. High-power laser applications will require continuous-surface mirrors for both the dither and correction functions. The operating characteristics of COAT systems employing deformable mirrors are expected to be significantly different from systems that utilize segmented, pistonlike mirrors. In particular, the deformable mirror can introduce significant coupling between control channels, it can point the entire beam rather than merely changing the transmitted beam phase front in a stepwise manner, and it can cause the servo system to converge with detrimental 2π phase ambiguities in the error signal.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"27 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113934709","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
Split beam system for laser drawing of optical fibers 光纤激光拉伸分束系统
Conference on Laser and Electrooptical Systems Pub Date : 1900-01-01 DOI: 10.1364/cleos.1976.tub3
M. Saifi, R. Borutta
{"title":"Split beam system for laser drawing of optical fibers","authors":"M. Saifi, R. Borutta","doi":"10.1364/cleos.1976.tub3","DOIUrl":"https://doi.org/10.1364/cleos.1976.tub3","url":null,"abstract":"Development of low-loss glass-fiber optical waveguides has intensified research in the area of fiber drawing techniques. Many of these fibers are made from fused silica with suitable dopants in the core and clad region, requiring a drawing temperature of over 1900°C. As compared with a furnace or a gas torch, CO2 lasers offer an excellent alternative highly responsive heat source. However, since the output of a laser is a collimated beam, it is necessary to restructure it to provide uniform distribution around the preform circumference.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","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":"114816630","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
Room temperature cw GaAs and GaAIAs lasers 室温连续GaAs和GaAIAs激光器
Conference on Laser and Electrooptical Systems Pub Date : 1900-01-01 DOI: 10.1364/cleos.1976.wb3
R. Gill
{"title":"Room temperature cw GaAs and GaAIAs lasers","authors":"R. Gill","doi":"10.1364/cleos.1976.wb3","DOIUrl":"https://doi.org/10.1364/cleos.1976.wb3","url":null,"abstract":"During the past 8 years, compounds of Ga1−\u0000 x\u0000 Al\u0000 x\u0000 As have been the subject of intensive study for the reproducible fabrication of reliable ir emitting lasers capable of sustained cw operation at and above room temperature. Numerous types of stripe-geometry double heterojunction lasers have been proposed and demonstrated including:\u0000 (1) lasers with contact stripes isolated using an insulator such as silicon dioxide;\u0000 (2) lasers with contact stripes isolated by bounding regions of high resistivity GaAs formed by proton bombardment;\u0000 (3) lasers with contact stripes isolated by bounding p−n junction regions which are reversed biased during laser operation.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"50 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":"121721798","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
Engineering advances in environmental remote sensing 环境遥感的工程进展
Conference on Laser and Electrooptical Systems Pub Date : 1900-01-01 DOI: 10.1364/cleos.1976.wf1
S. Melfi, J. A. Eckert, A. Pressman
{"title":"Engineering advances in environmental remote sensing","authors":"S. Melfi, J. A. Eckert, A. Pressman","doi":"10.1364/cleos.1976.wf1","DOIUrl":"https://doi.org/10.1364/cleos.1976.wf1","url":null,"abstract":"Remote sensing, especially from aircraft, has provided invaluable data to assess the environmental impact of man’s activity. The primary techniques that have been successfully demonstrated include aerial photography, thermal scanning, and multi-spectral scanning. In addition, laser probing techniques have also been used recently, from airborne platforms, to monitor specific pollutants over wide geographical areas. The success of these activities has prompted increased research and development to improve the utility of this class of monitoring technique.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"9 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":"122113461","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
Advances in electrooptic TIR diffraction modulators/deflectors as industrial devices 工业用电光TIR衍射调制器/偏转器的研究进展
Conference on Laser and Electrooptical Systems Pub Date : 1900-01-01 DOI: 10.1364/cleos.1976.wd6
M. Scibor-Rylski
{"title":"Advances in electrooptic TIR diffraction modulators/deflectors as industrial devices","authors":"M. Scibor-Rylski","doi":"10.1364/cleos.1976.wd6","DOIUrl":"https://doi.org/10.1364/cleos.1976.wd6","url":null,"abstract":"Modulator/deflector applications in communications addressing and data processing call for simple, inexpensive, reliable, and fast devices that can be mass produced from readily available materials. The newly introduced TIR modulators using low voltages (<90 V at 0.63 μm) fit this description.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","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":"115629704","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
Wavefront distortion sensing for control of an adaptive optics system 用于自适应光学系统控制的波前畸变传感
Conference on Laser and Electrooptical Systems Pub Date : 1900-01-01 DOI: 10.1364/cleos.1976.thf2
D. Fried
{"title":"Wavefront distortion sensing for control of an adaptive optics system","authors":"D. Fried","doi":"10.1364/cleos.1976.thf2","DOIUrl":"https://doi.org/10.1364/cleos.1976.thf2","url":null,"abstract":"By sensing the wavefront distortion in the propagation path, between an aperture and some distant point of interest, and using this information to control the deformation of some adaptive element in the optical train behind the aperture, it is possible to achieve nearly diffraction-limited performance in an imaging system viewing the point of interest through the aperture, or to achieve the same in a laser transmitter irradiating the point of interest through the aperture. The key to this process lies in the ability to sense accurately the wavefront distortion. Methods have been discussed in the published literature1,2 for directly sensing the random phase distortion at each point in the aperture relative to the aperture average phase. These methods have a noise sensitivity such that the error in the estimate of the wavefront distortion increases rapidly as the total aperture size, or the number of adjustment degrees of freedom encompassed by the aperture, increases. As a result, in many applications the useful aperture size of an adaptive optics system is significantly limited by SNR considerations in the wavefront distortion sensing.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"7 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":"127609765","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
KMSF Laser fusion systems overview KMSF激光聚变系统概述
Conference on Laser and Electrooptical Systems Pub Date : 1900-01-01 DOI: 10.1364/cleos.1976.thd1
C. Thomas
{"title":"KMSF Laser fusion systems overview","authors":"C. Thomas","doi":"10.1364/cleos.1976.thd1","DOIUrl":"https://doi.org/10.1364/cleos.1976.thd1","url":null,"abstract":"The unique requirements of a laser fusion experimental facility have led to the development of many new optical engineering and manufacturing techniques over the past several years. This paper will discuss some of these developments in the areas of high-power Nd+ glass laser systems and target illumination systems. The success of our laser fusion program to date has also required significant engineering advances in pellet fabrication techniques and in plasma diagnostic devices, but these nonoptical developments are not included in this paper.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","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":"121554912","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
Lasers for fiber optics 光纤激光器
Conference on Laser and Electrooptical Systems Pub Date : 1900-01-01 DOI: 10.1364/cleos.1976.the5
B. D. De Loach
{"title":"Lasers for fiber optics","authors":"B. D. De Loach","doi":"10.1364/cleos.1976.the5","DOIUrl":"https://doi.org/10.1364/cleos.1976.the5","url":null,"abstract":"The characteristics of lasers designed for use in optical fiber transmission systems will be presented. These devices have excellent optical properties that allow efficient coupling to optical fibers. Their electrooptical properties are compatible with silicon integrated circuit driver and feedback control design, and a companion paper discusses both the electrical and optical coupling problems.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","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":"116238397","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
Microprocessor controlled sixty-four element pulsed optical receiver 微处理器控制的64元脉冲光接收机
Conference on Laser and Electrooptical Systems Pub Date : 1900-01-01 DOI: 10.1364/cleos.1976.tuf6
M. E. Fossey, J. Holmes, R. Jacob
{"title":"Microprocessor controlled sixty-four element pulsed optical receiver","authors":"M. E. Fossey, J. Holmes, R. Jacob","doi":"10.1364/cleos.1976.tuf6","DOIUrl":"https://doi.org/10.1364/cleos.1976.tuf6","url":null,"abstract":"A microprocessor controlled, sixty-four element, pulsed optical receiver system has been developed. It is used in conjunction with a double pulse ruby laser (1 J/pulse) for remotely sensing crosswind in the atmosphere by analyzing the laser energy scattered from a diffuse target.1","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"33 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113965253","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
Infrared transparent materials and components 红外透明材料及组件
Conference on Laser and Electrooptical Systems Pub Date : 1900-01-01 DOI: 10.1364/cleos.1976.wa3
G. Enrique Bernal
{"title":"Infrared transparent materials and components","authors":"G. Enrique Bernal","doi":"10.1364/cleos.1976.wa3","DOIUrl":"https://doi.org/10.1364/cleos.1976.wa3","url":null,"abstract":"Infrared transparent components are critical elements of laser and electrooptical systems where they are used as environmental interface elements, as in detectors and laser windows, refractive elements, and beam combiners.","PeriodicalId":301658,"journal":{"name":"Conference on Laser and Electrooptical Systems","volume":"85 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":"121362994","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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