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Proceedings Paper

Growth and properties of a new holographic storage material: Ce:Pr:LiNO3 crystal
Author(s): Wei Zheng; Liancheng Zhao; Rui Wang; Yuheng Xu
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Paper Abstract

Pr:LiNbO3 crystal can be used in two-color gated storage process for its special energy-level structure. Compared with other crystals used as volume holographic storage media, it has a great merit that an image recording does not erase the recorded one in multiplex storage process. But its photorefractive effect appears weaker than other crystals in the same conditions. We doped photorefractive sensitizing element Ce into Pr:LibNO3 to get Ce:Pr:LiNbO3 crystal with Czochralski method. The structure of crystals has been determined by X-ray powder diffraction method. The results indicate Pr:LiNbO3 and Ce:Pr:LiNbO3 keep the same structural characteristics as pure lithium niobate. In the absorption spectra of Pr:LiNbO3 and Ce:Pr:LiNbO3 samples with non-polarized light in wavelength of 300 - 900 nm, the absorption edge of Ce:Pr:LiNbO3 shifts to the red compared with that of Pr:LiNbO3. The diffraction efficiency, writing time and especially erasing time of Ce:Pr:LiNbO3 have been measured. We find that maximum diffraction efficiency of Ce:Pr:LiNbO3 has increased without at cost of decreasing the erasing time. The effect of doping ions on the optical properties of Ce:Pr:LiNbO3 crystal as holographic recording media has been studied systematically.

Paper Details

Date Published: 17 September 2002
PDF: 4 pages
Proc. SPIE 4930, Advanced Optical Storage Technology, (17 September 2002); doi: 10.1117/12.483294
Show Author Affiliations
Wei Zheng, Harbin Institute of Technology (China)
Liancheng Zhao, Harbin Institute of Technology (China)
Rui Wang, Harbin Institute of Technology (China)
Yuheng Xu, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 4930:
Advanced Optical Storage Technology
Duanyi Xu; Seiya Ogawa, Editor(s)

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