检索结果-内蒙古大学图书馆

European Conference on Quantum Electronics (EQEC)

作者： K.J. Ebeling Department of Optoelectronics University of Ulm Ulm Germany

Semiconductor lasers have made exciting progress in performance over the last few years with prospective applications e.g. in optical communications and data storage, metrology, display technology, material processing, or solid state laser pumping. The short wavelength limit of semiconductor laser emission has now been pushed to 410 nm using GaN based devices. High power broad area lasers in the well established InAlGaAs material system offer several 10 W continuous output power at power conversion efficiencies above 60%. Beam profile control is obtained in hybrid or monolithic master oscillator power amplifier (MOPA) configurations. Communication laser diodes show small signal current modulation bandwidths 40 GHz and are applied for 20 Gbit/s data transmission. Extremely low laser threshold currents of less than 10µA as well as more than 50% conversion efficiency at 1 mW output power are reported from novel selectively oxidized vertical cavity surface emitting laser diodes (VCSELs).

关键词： Semiconductor lasers Surface emitting lasers Atom optics Atomic beams Pump lasers Laser theory Physics optical pumping Quantum mechanics Books

来源：评论

学校读者我要写书评

暂无评论

HOLOGRAPHIC storage - THE QUEST FOR THE IDEAL MATERIAL CONTINUES

引用

optical MATERIALS 1995年第2-3期4卷 370-375页

作者： SINCERBOX, GT IBM Almaden Research Center San Jose CA 95120 USA

Throughout the 30-year history of holographic storage, an enormous number of material systems have been studied for use as the recording medium. In spite of the years and effort expended, the ideal material has not been identified and interest in holographic storage has waned. Recently, however, advances in both organic and inorganic photorefractive materials has rekindled interest in volume holography, not only for information storage but also as a technology that may be important for optical interconnects, neural networks and optical computing. Interest is further enhanced by continuing development in some of the enabling technologies, such as CCD arrays and spatial light modulators, necessary to make a viable storage product. After a brief introduction to holographic storage, this paper will concentrate on defining the systems requirements that drive material selection and review recent advances in photorefractive materials and techniques that address key issues. Included will be a discussion of multiplexing methods as well as various means to inhibit, or at least manage, destructive writing and reading. The paper will conclude with a discussion of the remaining critical issues as a focus for continued research and development.

关键词： optical data storage

来源：评论

学校读者我要写书评

暂无评论

What's driving hard disk storage cost?

What's driving hard disk storage cost?

引用

1995 Topical Meeting on optical data storage

作者： COVAULT, M HEWLETT PACKARD CORP DIV DISK MEMORYBOISEID 83714

advances in hard disk magnetic recording technology are accelerating the increase in areal density. With the advent of MR heads and PRML channels, the drive industry is doubling the capacity of high performance driver... 详细信息

ISBN: (纸本)0819418730

关键词： DISK DRIVES COST/MB MR PRML AREAL DENSITY DUAL STRIPE MR GMR

来源：评论

学校读者我要写书评

暂无评论

Demand paging for video-on-demand servers

Demand paging for video-on-demand servers

引用

IEEE International Conference on Multimedia Computing and Systems (ICMCS)

作者： B. Ozden R. Rastogi A. Silberschatz C. Martin AT and T Bell Laboratories Inc. Murray Hill NJ USA

With recent advances in storage and network technology it is now possible to provide video on demand (VOD) service, thereby eliminating the inflexibility inherent in today's broadcast cable systems. A VOD server is a computer system that stores videos in compressed digital form and provides support for the concurrent transmission of different portions of the compressed video data to the various viewers. We present novel demand paging algorithms that provide rate guarantees while utilizing the limited buffer space effectively and eliminating the disk bandwidth limitation. Our schemes, therefore, increase the number of clients that can be serviced concurrently. A VOD server, which is based on our schemes, is currently being implemented at AT&T.

关键词： Videos Bandwidth Network servers Cable TV optical fiber cables Read-write memory Costs TV broadcasting optical fiber networks Transform coding

来源：评论

学校读者我要写书评

暂无评论

optical storage: technology and applications

Optical storage: Technology and applications

引用

Proceedings of the 1994 13th Symposium on Mass storage Systems

作者： Lenth, Wilfried IBM Almaden Research Cent San Jose United States

optical storage technology is characterized by the combination of high storage density, high data rate, fast access time, high reliability and media removability. The paper discusses innovations in component technologies that are leading to rapid advances in the optical storage technology. The appearance of improved storage management software will continue to extend the application potential of optical disk libraries beyond the more traditional backup and archival functions.

关键词： optical data storage

来源：评论

学校读者我要写书评

暂无评论

advances IN MAGNETO-optical SUPERRESOLUTION FOR VERY HIGH DENSITY MO RECORDING

ADVANCES IN MAGNETO-OPTICAL SUPERRESOLUTION FOR VERY HIGH DE...

引用

1994 Topical Meeting on optical data storage

作者： OWA, H KANNO, M TANAKA, S SONY CORP RES CTRSHINAGAWA KUTOKYO 141JAPAN

ISBN: (纸本)0819416711

Large capacity is a strong requirement for the next generation of magneto-optical disks in order to manage huge amount of data such as digital images. We reported that superresolution can be realized by using an exchange-coupled multilayer disk in 199 1. This novel technology is called Magnetically Induced Super Resolution (MSR) and it more than doubles the readout resolution limit of the conventional optical disk system without shortening the laser wavelength or increasing the numerical aperture (NA) of the optical lens 1),2)• The essence of MSR is that a part of the focused light spot used for readout is masked, so the effective aperture becomes much narrower than that for conventional detection. Figure 1 shows two types of detection, front aperture detection (FAD) and rear aperture detection (BAD). Since dc light is irradiated onto moving media, the medium at the rear of the light spot is much hotter. In FAD, the light spot area overlapped by the heated area is optically masked, so the signal is detected from the crescent-shaped aperture. In BAD, the crescent-shaped area is masked because the signal is erased by the initializing field prior to the readout. We would like to review some of our investigations and clarify what is important to realize an MSR system.

关键词： Molybdenum Modulation Super resolution Magnetism optical storage Pulsed laser operation Standards development Signal detection optical discs Spatial frequencies

来源：评论

学校读者我要写书评

暂无评论

optical COMPUTING, optical MEMORY, AND SBIRS AT FOSTER-MILLER 5

OPTICAL COMPUTING, OPTICAL MEMORY, AND SBIRS AT FOSTER-MILLE...

引用

5th Conference on optical Pattern Recognition

作者： DOMASH, LH FOSTER MILLER INC WALTHAMMA 02154

ISBN: (纸本)0819415413

A desktop design and manufacturing system for binary diffractive elements, MacBEEP, was developed with the optical researcher in mind. optical processing systems for specialized tasks such as cellular automation computation and fractal measurement were constructed. A new family of switchable holograms has enabled several applications for control of laser beams in optical memories. New spatial light modulators and optical logic elements have been demonstrated based on a more manufacturable semiconductor technology. Novel synthetic and polymeric nonlinear materials for optical storage are under development in an integrated memory architecture. SBIR programs enable creative contributions from smaller companies, both product oriented and technology oriented, and support advances that might not otherwise be developed.

关键词： Optics manufacturing optical storage Fractal analysis Holograms Polymers Binary data Holography optical signal processing Computer aided design optical computing

来源：评论

学校读者我要写书评

暂无评论

storage technology initiatives - NSIC (National storage Industry Consortium)

Storage technology initiatives - NSIC (National Storage Indu...

引用

Proceedings of the 1994 13th Symposium on Mass storage Systems

作者： Hoagland, A.S. Santa Clara Univ Santa Clara United States

A consortium of American companies and universities - called The National storage Industry Consortium (NSIC) - has been formed for the purpose of soliciting US Government funding to support `preproprietary' technology initiatives focused on accelerating technical advances in data storage technology. A set of 5-year projects was funded last year. The goals of these projects include attaining a recording density of 10 gigabits per square inch on magnetic disk and 1 terabyte per cubic inch on magnetic tape;goals for optical storage are similar to these. A brief review will be given of the NSIC organization, its technical program structure, and the status of the ARPA-funded technical activities.

关键词： data storage equipment

来源：评论

学校读者我要写书评

暂无评论

USE OF PERSONAL-COMPUTER technology IN SUPPORTING A RADIOLOGICAL REVIEW WORKSTATION

USE OF PERSONAL-COMPUTER TECHNOLOGY IN SUPPORTING A RADIOLOG...

引用

Conference on PACS: Design and Evaluation

作者： RAMASWAMY, MR AVRIN, DE ANDRIOLE, KP WONG, AWK BAZZILL, TM ARENSON, RL UNIV CALIF SAN FRANCISCO SCH MEDDEPT RADIOLRADIOL INFORMAT LABSAN FRANCISCOCA 94143

ISBN: (纸本)0819414603

Recent advances in personal computer technology have made these low-cost platforms quite attractive for the implementation of radiological workstations, particularly in those cases where high throughput is not critical (such as clinical review workstations). In light of this observation, the objectives of this on-going project are threefold: (1) to identify the characteristics and performance specifications that are desirable in a radiological review workstation (within the UCSF PACS architecture), (2) to review current personal computer technology in terms of its ability to support such a workstation, and (3) to design and implement a prototype hardware and software architecture. This paper outlines our progress to data and discusses some of our projections for the near future.

关键词： Image processing Human-machine interfaces Picture Archiving and Communication System Image storage Computed tomography Computer architecture data storage Diagnostics Chromium Multimedia

来源：评论

学校读者我要写书评

暂无评论

Future of digistore: Modular design for the spot playback server

Future of digistore: Modular design for the spot playback se...

引用

Proceedings of the International Broadcasting Convention

作者： Danilowicz, M.J. Dynatech Video Group United States

The paper presents that modular separation of open systems components is vital to the success of disc based video server solutions. For application of spot playback, systems such as Dynatech's digistore are poised to exploit the cast rate of technology change in computer peripherals, including storage media. Manufacturers and users can leverage these advances without obsolescence of the systems as a whole, potentionally extending functionality to new applications such as a program.

关键词： optical data storage

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：