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System and material aspects of volumetric bit-wise optical data storage.

机译:体积逐位光学数据存储的系统和材料方面。

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摘要

There are several primary factors that limit the data capacity of a volumetric bit-wise optical data storage system. Firstly, the data density in each layer is limited by the spot size formed at the focus of the objective lens. The spherical aberration induced by the medium also limits the maximum depth that an optical system can reach with diffraction limited focus. A second primary factor is the undesired detection of data from layers other than the layer at the laser focus, which is an effect called inter-layer crosstalk. In the last, the transmission and the reflection rate of the medium sets the limit of the number of the data layers for a given laser diode.;In the modeling, the inter-layer crosstalk of volumetric bit-wise storage systems is simulated by using three methods. Several far-field and near-field systems with spherical aberration compensators are presented. In addition, the maximum surface densities of these systems are discussed.;A dynamic test stand equipped with a tracking servo is built for testing the fluorescent material performance in a simulated space environment. Coupon samples made of Super-Rens material are tested in another dynamic test stand equipped with a focus servo. Controls of writing conditions for Super-Rens material are investigated with respect to the focus spot speed and data rate.;Overall, this dissertation provides a description of volumetric bit-wise optical data storage technology, in terms of the system and material aspects, through simulation and experiments.
机译:有几个主要因素限制了按位光学数据存储系统的数据容量。首先,每一层的数据密度受到在物镜焦点处形成的光斑尺寸的限制。介质引起的球面像差还限制了光学系统在有限的衍射焦点下可以达到的最大深度。第二个主要因素是不希望从激光聚焦处的层以外的层检测数据,这种现象称为层间串扰。最后,介质的透射率和反射率设置了给定激光二极管的数据层数限制。在建模中,通过使用来模拟体积位存储系统的层间串扰三种方法。介绍了几种带有球面像差补偿器的远场和近场系统。此外,还讨论了这些系统的最大表面密度。建立了配备跟踪伺服器的动态测试台,用于在模拟的空间环境中测试荧光材料的性能。由Super-Rens材料制成的优惠券样本将在另一个配有聚焦伺服系统的动态测试台中进行测试。从焦点速度和数据速率的角度研究了Super-Rens材料的写条件控制。总的来说,本文从系统和材料方面对体积位光学数据存储技术进行了描述。模拟和实验。

著录项

  • 作者

    Zhang, Yan.;

  • 作者单位

    The University of Arizona.;

  • 授予单位 The University of Arizona.;
  • 学科 Physics Optics.
  • 学位 Ph.D.
  • 年度 2004
  • 页码 132 p.
  • 总页数 132
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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