Optical single-bit recording and fluorescent readout utilizing aluminum oxide single crystals
    2.
    发明授权
    Optical single-bit recording and fluorescent readout utilizing aluminum oxide single crystals 有权
    使用氧化铝单晶的光学单位记录和荧光读数

    公开(公告)号:US07072275B2

    公开(公告)日:2006-07-04

    申请号:US10419726

    申请日:2003-04-22

    IPC分类号: G11B7/24 G11B7/00

    摘要: The present invention provides methods and apparatuses for writing information to, reading information from, and erasing information on a luminescent data storage medium comprising Al2O3. The method includes writing and erasing of the information using photoionization via sequential two-photon absorption and non-destructive reading the information using fluorescent detection. The apparatuses for writing and reading the information incorporate confocal detection and spherical aberration correction for multilayer volumetric fluorescent data storage. The methods also allow multilevel recording and readout of information for increased storage capacity.

    摘要翻译: 本发明提供了用于向包括Al 2 O 3 N 3的发光数据存储介质写入信息,读取信息和从中擦除信息的方法和装置。 该方法包括通过使用荧光检测的顺序双光子吸收和非破坏性读取信息的光电离来写入和擦除信息。 用于写入和读取信息的装置包括用于多层体积荧光数据存储的共焦检测和球面像差校正。 这些方法还允许多级记录和读出信息以增加存储容量。

    Optical relay for pixel-based holographic storage and retrieval
    4.
    发明授权
    Optical relay for pixel-based holographic storage and retrieval 有权
    用于基于像素的全息存储和检索的光学继电器

    公开(公告)号:US6108110A

    公开(公告)日:2000-08-22

    申请号:US258162

    申请日:1999-02-25

    CPC分类号: G11B7/0065 G11C13/042

    摘要: A holographic storage and retrieval system for use in co-propagating or counter-propagating geometries having a common optical relay for guiding a signal beam and a reference beam along a common optical axis to a holographic medium to write a hologram therein. The optical relay has an object region imaging quality such that at least 65% and preferably at least 80% of the nominal luminous energy from object pixels is encompassed or "ensquared" by the corresponding image pixels. Additionally, the optical relay has a high total numerical aperture (N.A.) of about 0.83, a pixel N.A. of approximately 0.04 for the signal beam. The system of the invention can be used with holographic storage media in the form of disks, tapes or bulk holographic crystals.

    摘要翻译: 一种用于共同传播或反向传播的几何形状的全息存储和检索系统,其具有用于将信号光束和参考光束沿着公共光轴引导到全息介质以在其中写入全息图的公共光学继电器。 光学继电器具有物体区域成像质量,使得来自对象像素的标称光能的至少65%,优选地至少80%被相应的图像像素包围或“被遗漏”。 此外,光学继电器具有约0.83的高总数值孔径(N.A.),信号光束的像素N.A.大约为0.04。 本发明的系统可以与盘,带或体全息晶体的形式的全息存储介质一起使用。