Transparent glass has been identified as a vital medium for three-dimensional (3D) optical information storage and multi-level encryption. However, it has remained a challenge for directly writing 3D patterning inside a transparent glass using semiconductor blue laser instead of high-cost femtosecond laser. Here, we demonstrate that rare earth ions doped transparent glass can be used as 3D optical information storage and data encryption medium based on their reversible transmittance and photoluminescence manipulation. The color of tungsten phosphate glass doped with rare earth ions change reversibly from light yellow to blue upon alternating 473 nm laser illumination and temperature stimulation, resulting in the reversible luminescence modulation. The information data could be repeatedly written and erased in arbitrary 3D space of transparent glass, not only showing the ability of the excellent reproducibility and storage capacity, but also opening opportunities in information security. The present work expands the application fields of luminescent glass, and it is conducive to develop a novel 3D data storage and information encryption media.

透明玻璃已被确定为三维 (3D) 光学信息存储和多级加密的重要介质。然而，使用半导体蓝色激光代替高成本飞秒激光在透明玻璃内直接写入 3D 图案仍然是一个挑战。在这里，我们证明了稀土离子掺杂的透明玻璃基于其可逆透射率和光致发光操作，可用作 3D 光学信息存储和数据加密介质。在交替的 473 nm 激光照射和温度刺激下，掺杂稀土离子的磷酸钨玻璃的颜色从浅黄色可逆地变为蓝色，从而产生可逆的发光调制。信息数据可以在透明玻璃的任意3D空间中反复写入和擦除，不仅展示了其出色的再现性和存储能力，也为信息安全打开了机遇。目前的工作拓展了发光玻璃的应用领域，有利于开发新型的3D数据存储和信息加密介质。