体全息存储技术研究

Research on Volume Holographic Storage Technology

指出体全息存储技术具有密度高、容量大和数据传输速率快等优势,引起了研究者的广泛关注,定量分析了光学元件对体全息存储系统中光束质量的影响,研究了光学元件对再现图像峰值信噪比的影响。研究结果表明,高反射率的镀银反射镜对光束影响较小,光束强度分布影响再现图像的质量,光束强度分布不均匀会导致再现图像峰值信噪比下降。

Volume holographic storage technology has the advantages of high density, high capacity and high transfer rate, and it has attracted the attention from researchers. In this paper, the influence of optical components on beam quality in volume holographic storage system is analyzed quantitatively and the influence of optical components on the peak signal to noise ratio of reproduced image is studied. The results show that the silvered mirror with high reflectivity has little effect on light beam, the beam intensity distribution influences the quality of reproduced image and the uneven distribution of beam intensity will lead to the decrease of peak signal to noise ratio of reproduced image.