Holographic Image Storage in Eu(3+)-Doped Alkali-Aluminosilicate Glasses

摘要

In this paper, we demonstrate that holographic information can be stored in Eu(3+)- doped alkali-aluminosilicate glasses. The holograms were developed using a two beam mixing configuration with a write-beam wavelength (465.8 nm) corresponding to the 7F0 yields 5D0 transition of the Eu(3+) ions. The images were reconstructed either with the wavelength used to record them or with wavelengths below this transition (543, 633 nm). Clear holographic images were stored using a total writing power of 5 mW and an exposure time of 20 Seconds. In addition, clear holograms were recorded using an exposure time of 200 ms when 100 mW of the writing power was used. The exposure time and the writing power required for obtaining clear holographic images are dependent on the Eu(3+) concentration.