A proposed beam-addressable memory
A proposed beam-addressable memory
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提出的波束可寻址存储器
DOI：
10.1109/tmag.1967.1066003
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发表时间：
1967
影响因子：
2.1
通讯作者：
G. Fan
中科院分区：
文献类型：
--
作者：
C. Mee;G. Fan
评估了光束操作的磁存储系统的可行性。描述了激光技术和透明磁性材料的最新进展以及写入和读取信息的方法。在写入过程中，考虑了薄膜上的热磁记录，并计算了写入速度和分辨率，说明与现有磁记录技术相比，可获得较大的性能提升。材料的进步超越了以前使用的金属，已经朝着更透明的磁性介质发展，同时保留了大的固有磁光旋转。因此，获得了大的信噪比，从而放宽了对材料均匀性的要求。将铁氧体、石榴石和稀土化合物的特性与金属进行比较，以说明这一进步。目前光束实现大视场随机访问存在技术问题。然而，在某些类型的存储器中，访问要求结合了顺序运动和随机运动，这种限制得到了缓解。作为示例，讨论了用于具有某些性能优势的计算机输入输出系统的原型存储器。在该存储器中，通过旋转镜实现顺序访问，通过数字光偏转器实现随机访问。
The feasibility of optical beam-operated magnetic storage systems is assessed. Recent advances in laser technology and in transparent magnetic materials are described along with methods for writing and reading information. In the writing process, thermomagnetic recording on thin films is considered and the writing speed and resolution is calculated, illustrating the large performance improvement obtainable compared with existing magnetic recording techniques. The progress in materials, beyond the previously used metals, has developed towards more transparent magnetic media while retaining large intrinsic magneto-optical rotation. Consequently, large signal-to-noise ratios are obtained which relax the material uniformity requirements. The properties of ferrites, garnets, and rare-earth compounds are compared with metals to illustrate this advance. At the present time, technical problems exist with a light beam in achieving random access to a large field. This limitation is alleviated, however, in certain types of memories where the access requirements combine sequential and random motions. As an example, a prototype memory is discussed for a computer input-output system having certain performance advantages. In this memory, sequential access is achieved with a rotating mirror and random access by means of a digital light-deflector.