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光信息存储是目前数字化信息存储的主要手段,传统二维光信息存储中存在的不足限制了存储密度及存储容量的进一步提高。基于光致漂白材料的三维光信息存储机理,建立了共焦/双光子扫描荧光显微镜系统。采用一种新型光致漂白芴类衍生物ATFTBAr作为存储材料,利用飞秒激光实现了在该材料上的三维光信息存储和读取。存储层达到四层,每层间距和信息点间距分别达到了10μm和8μm。对信息点进行了信号强度的识别和对比,详细分析了由于折射率失配所引起的信号串扰问题。研究表明,建立的实验系统和选用的存储材料能够较好地实现三维光信息存储。
Optical information storage is the main means of digital information storage at present. The deficiencies in traditional two-dimensional optical information storage limit the further increase of storage density and storage capacity. Based on the three-dimensional optical information storage mechanism of photobleaching materials, a confocal / two-photon scanning fluorescence microscope system was established. A novel photobleaching fluorene derivative, ATFTBAr, was used as a storage material, and three-dimensional optical information storage and reading on the material was realized by femtosecond laser. The storage layer reaches four layers, and the distance between each layer and the information point are respectively 10μm and 8μm. The information points are identified and compared with the signal intensity, and the signal crosstalk caused by the mismatch of refractive index is analyzed in detail. The research shows that the established experimental system and the selected storage materials can well achieve the three-dimensional optical information storage.