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

这个小型企业创新研究（SBIR）第二阶段项目研究了一种新的离子交换光致变色玻璃盘中的全息数据存储。众所周知，全息数据存储可以显著增加数据存储容量并减少访问时间。 然而，全息数据存储的技术成熟度被认为受到以下因素的阻碍：缺乏良好的全息材料，该材料可以被擦除和光学记录，具有几乎无限的重写周期，具有用于大容量复用数据记录的大折射率调制，以及具有长寿命和对存档应用的破坏性读出的免疫力。如阶段I所示，新型离子交换光致变色玻璃可满足所有上述要求。此外，它不需要在全息记录后显影或定影，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卷厚度的技术。 全息性能参数将在厚度改进后再次确定。 一个紧凑的全息存储系统，然后将设计和建造，以显示磁盘类型的存储应用的有效性。 将展示大容量存储。将与一些主要的存储公司探讨商业发展。使用这种新型离子交换玻璃可以显著提高全息数据存储技术在商业和军事应用中的应用，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，以及对大型智能数据库的快速访问。

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.