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Proceedings of the 1999 Recent advances in Metrology, Characterization, and Standards for optical Digital data Disks

作者： Hofmann, Walter P. Zardini, Gian Anton Bernegger, Daniel Memex Optical Media Solutions AG Zuzwil Switzerland

A method for rapid characterization of DVD multilayer depositions is presented. With a single optical measurement the devised method allows to determine the values of the refractive index (n) and of the extinction coefficient (k) for the wavelength comprised between 400 and 900 nm, and the film thickness. The analysis of these optical and physical properties provides a mean for tracking back possible process deviations in the multilayer sputtering of the DVD-RAM disks.

关键词： optical disk storage

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Thin film magnetic recording

Thin film magnetic recording

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International Conference on Thin Film Physics and Applications - '91 TFPA

作者： Chen, Yi X. Shanghai Jiao Tong Univ. Shanghai China

ISBN: (纸本)0819406465

Magnetic recording now dominates the data, video, and audio storage for both professional and consumer applications. The technology has improved immensely as understanding of the physics of recording and reproducing processes is gained. advances in recording materials and processes for fabricating components, especially with the thin film media and heads, have contributed in a major way to extending the performance of magnetic recording technology into different industries. Some examples of magnetic thin films applicating for recording media and heads studied in Information storage Research Centre of Shanghai Jiao Tong University are described.

关键词： data storage, Magnetic

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

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

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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

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Nanophotonics-enabled optical data storage in the age of machine learning

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APL PHOTONICS 2021年第11期6卷

作者： Lamon, Simone Zhang, Qiming Gu, Min Univ Shanghai Sci & Technol Inst Photon Chips Shanghai 200093 Peoples R China Univ Shanghai Sci & Technol Ctr Artificial Intelligence Nanophoton Sch Opt Elect & Comp Engn Shanghai 200093 Peoples R China

The growing data availability has accelerated the rise of data-driven and data-intensive technologies, such as machine learning, a subclass of artificial intelligence technology. Because the volume of data is expanding rapidly, new and improved data storage methods are necessary. advances in nanophotonics have enabled the creation of disruptive optical data storage techniques and media capable of storing petabytes of data on a single optical disk. However, the needs for high-capacity, long-term, robust, and reliable optical data storage necessitate breakthrough advances in existing optical devices to enable future developments of artificial intelligence technology. Machine learning, which employs computer algorithms capable of self-improvement via experience and data usage, has proven an unrivaled tool to detect and forecast data patterns and decode and extract information from images. Furthermore, machine learning has been combined with physical and chemical sciences to build new fundamental principles and media. The integration of nanophotonics-enabled optical data storage with emerging machine learning technologies promises new methods for high-resolution, accurate, fast, and robust optical data writing and reading, as well as the discovery, design, and optimization of nanomaterials and nanostructures with new functionalities for next-generation nanophotonics-enabled optical data storage. In this Perspective, we review advances in nanophotonics-enabled optical data storage and discuss the role of machine learning in next-generation nanophotonics-enabled optical data storage. (c) 2021 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license(http://***/licenses/by/4.0/).

关键词： optical data storage

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Properties of active waveguide of ultra-small-size laser used in near-field optical recording: Characterization and model

Properties of active waveguide of ultra-small-size laser use...

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Proceedings of the 1999 Recent advances in Metrology, Characterization, and Standards for optical Digital data Disks

作者： Wan, Wu Xiandeng, Pei Huazhong Univ of Science and Technology Wuhan China

The paper introduces characters of Near Field optical Disc (NFOD) Recording Technique. The paper presents electrical and optical waveguide process problems in corn-shaped optical head of NFOD. it also put forward to the three grades approximate model of ultra-small-size laser firstly and simulate calculations in first-grade approximation of corn-shaped optical head of NFOD. The result give the relation between laser's input current and output power and the near field output light intensity pattern, and it is an important basis for the NFOD optical head design with ultra thin active layer and ultra small spot laser.

关键词： optical disk storage

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Methods to characterize the recording layer of phase-change media initialized by induction heating

Methods to characterize the recording layer of phase-change ...

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Proceedings of the 1999 Recent advances in Metrology, Characterization, and Standards for optical Digital data Disks

作者： Yeo, Woon-Seong Kim, Hyung-Kyu Kim, Chang-Jong LG Electronics Inc Cheongju Korea Republic of

The method to measure the apparent reflectivity with gloss meter is applied to the phase-change optical disks before and after initialization process. The apparent reflectivity measurements for relative large area and the reflectivity measured by optical pick-up are compared. The apparent reflectivity measurements are proven to enough for the characterization of recording layer. The measurement with gloss meter has several advantages of speed, simple structure, low price and etc.

关键词： optical disk storage

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Nanoscale energy transport in information technology research with an application to high-density data storage devices and systems

Nanoscale energy transport in information technology researc...

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2002 ASME International Mechanical Engineering Congress and Exposition

作者： Asheghi, Mehdi Yang, Yizhang Sadeghipour, Sadegh M. Bain, James A. Barmak, Katayun Jhon, Myung S. Gellman, Andrew J. Schlesinger, Ed Zhu, Jian-Gang White, Robert M. Data Storage System Center Carnegie Mellon University PA 15213 United States

ISBN: (纸本)079183638X

By all measures, the data storage industry is one of the most important components of the Information technology (IT) revolution. In recent years, many of the emerging technologies rely heavily on energy transport at extremely short time and length scales as a mean to overcome the superparamagnetic limit - a serious impediment to future advancement of storage technology. Additionally, thermally induced failure and reliability issues at the nanoscale are becoming increasingly important due to rapid device miniaturization in data storage applications. Further advances in high-technology data storage systems will be difficult, if not impossible, without rigorous treatment of nanoscale energy transport. This manuscript reviews the thermal design issues and challenges in thermally assisted magnetic disk recording, thermally assisted scanned probe recording, phase change optical data recording, magnetoresistive random access memory (MRAM) and giant magnetoresistive (GMR) heads. Relevant thermally induced failures in GMR heads, write coil, interconnects and MRAM will be discussed as well. Copyright ©2002 by ASME.

关键词： MRAM devices

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Adaptive aberration compensation in high NA optics

Adaptive aberration compensation in high NA optics

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International Symposium on optical Memory and optical data storage Topical Meeting, ISOM/ODS 2002 - Joint International Symposium on optical Memory and optical data storage 2002

作者： Shimano, T. Ariyoshi, T. Sukeda, H. Maruyama, K. Murata, K. Central Research Laboratory Hitachi Ltd. 1-280 Higashi-Koigakubo KokubunjiTokyo185-8601 Japan Asahi Optical Co. Ltd. 2-36-9 Maeno-cho Itabashi-kuTokyo174-8639 Japan Asahi Glass Co. Ltd. 1150 Hazawa-cho Kanagawa-ku Yokohama221-8755 Japan

ISBN: (纸本)0780373790

Two approaches have been proposed for achieving 25-50 Gbyte capacity on one side of a 120 mm disc: using a two-element high numerical-aperture (NA) objective and using a dual-layered disc. One of the problems with these approaches is that an error in the cover-layer thickness of only a few microns can lead to serious spherical aberration. (SA). This is a particularly serious problem in dual-layered discs due to the distance between the two recording layers. Another problem is the narrow working distance (WD) of the two-element objective lens, which can result in the lens crashing onto the disc. To overcome these problems, we previously described accurate detection of and dynamic compensation for SA (Jpn. J. Appl. Phys., 40, 2001, and Proc. of SPIE, 4342, 2002) and a single-element high NA objective with a wide WD (Tech. Dig. of ISOM, 2001). In this paper, we review our related previous work and describe the latest advances. © 2002 IEEE.

关键词： Digital storage

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Quantum nonlinear optics - photon by photon

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NATURE PHOTONICS 2014年第9期8卷 685-694页

作者： Chang, Darrick E. Vuletic, Vladan Lukin, Mikhail D. Inst Ciencies Foton ICFO Barcelona 08860 Spain MIT Dept Phys Cambridge MA 02139 USA MIT Elect Res Lab Cambridge MA 02139 USA Harvard Univ Dept Phys Cambridge MA 02138 USA

The realization of strong interactions between individual photons is a long-standing goal of both fundamental and technological significance. Scientists have known for over half a century that light fields can interact inside nonlinear optical media, but the nonlinearity of conventional materials is negligible at the light powers associated with individual photons. Nevertheless, remarkable advances in quantum optics have recently culminated in the demonstration of several methods for generating optical nonlinearities at the level of individual photons. Systems exhibiting strong photon-photon interactions enable a number of unique applications, including quantum-by-quantum control of light fields, single-photon switches and transistors, all-optical. deterministic quantum logic, and the realization of strongly correlated states of light and matter.

关键词： Atom optics Nonlinear optics Quantum optics Quantum physics nature photonics Nature Photonics nature publishing group content journal optoelectronics optics biophotonics quantum optics cryptography spectroscopy terahertz technology light propagation lasers LEDs photovotaics fibre optics optical data storage

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advances in OPC technology and development of ZOPC tool

Advances in OPC technology and development of ZOPC tool

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Quantum Optics, optical data storage, and Advanced Microlithography

作者： Yan, Xiaolang Shi, Zheng Chen, Ye Chen, Qijun Institute of VLSI Design Zhejiang University Hangzhou 310027 China

ISBN: (纸本)9780819470027

As the most important RET (Resolution Enhancement technology), OPC (optical Proximity Correction) technology has been widely used in today's IC manufacturing and is still developing very fast both in its principle and its practice. In this invited paper, key techniques of OPC are classified and overviewed;progresses of OPC technology in recent years published in major SPIE symposiums are reviewed as well. Recent research results produced by Zhejiang University's team are described and reviewed with highlighting. An OPC tool suite named ZOPC, which has been designed to enable new OPC techniques to be integrated into one platform, is presented. The framework of ZOPC as well as its working scheme is demonstrated with real examples.

关键词： Distance measurement

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