SBIR Phase II: Holographic Disk Data Storage on a New Photochromic Glass

这个小型企业创新研究（SBIR）二期项目研究全息数据存储在一个新的离子交换光致变色玻璃磁盘。众所周知，全息数据存储可以显著提高数据存储容量，减少访问时间。然而，全息数据存储技术的成熟被认为受到以下因素的阻碍：缺乏良好的全息材料，可以几乎无限重写周期地擦除和光学记录，具有大容量复用数据记录的大索引调制，以及档案应用的长寿命和抗破坏性读出。正如第一阶段所证明的，新型离子交换光致变色玻璃可以满足上述所有要求。此外，它在全息记录后不需要显影或固定，使其成为全息存储应用中替代其他全息材料的有吸引力的候选者。第二阶段的研究将首先探索增加记录体积厚度的技术。厚度改善后，全息性能参数将再次确定。然后将设计和构造一个紧凑的全息存储系统，以显示磁盘类型存储应用的有效性。将展示高容量存储。将与一些大型仓储公司探讨商业开发。使用新型离子交换玻璃可以显著提高全息数据存储技术的商业和军事应用，如计算机数据存储、在线存储、图书馆档案应用、医学应用和军事目标识别的图像存储和处理，以及快速访问大型智能数据库。

This Small Business Innovation Research (SBIR) Phase II project studies holographic data storage in a new ion-exchanged photochromic glass disk. It is well known that holographic data storage can significantly increase data storage capacity and reduce access time. However, the technology maturity of holographic data storage is believed to be impeded by: the lack of good holographic material that can be erased and recorded optically with almost unlimited rewriting cycles, with large index modulation for large capacity multiplexed data recording, and with long lifetime and immunity to destructive readout for archival applications. As demonstrated in Phase I the new ion-exchanged photochromic glass can satisfy all above requirements. In addition, it does not require developing or fixing after hologram recording making it an attractive candidate to replace other holographic materials in holographic storage applications. The Phase II research will first explore techniques to increase the recording volume thickness. The holographic performance parameters will again be determined after the thickness improvement. A compact holographic storage system will then be designed and constructed to show the effectiveness of disk type storage application. High capacity storage will be demonstrated. Commercial development will be explored with some major storage companies. Using the new ion-exchanged glass can significantly improve the holographic data storage technology for commercial and military applications such as computer data storage, on-line storage, library archival applications, image storage and processing for medical applications and military target identification, and fast access to large intelligent databases.