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Crystal Research and Technology |
Cryst. Res. Technol. 41, 812 (2006) - Abstract -
Growth and photorefractive properties of Mg:Ce:Cu:LiNbO3 crystals grown by Czochralski method
Y. X. Fan, H. T. Li, and L. C. Zhao
School of Material Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| Keywords | photorefractive properties, Czochralski method, two-wave coupling, Mg:Ce:Cu:LiNbO3 |
| PACS | 42.70.Nq, 61.80.Ba, 71.35.Cc |
| DOI | 10.1002/crat.200510675 |
In this paper, photorefractive properties of Mg:Ce:Cu:LiNbO3 crystals were studied. The crystals doped with different concentration of Mg ions have been grown by the Czochralski method. Mg concentrations in grown crystals were analyzed by an inductively coupled plasma optical emission spectrometry (ICP-OE/MS). The crystal structures were analyzed by the X-ray powder diffraction (XRD), ultraviolet-visible (UV-Vis) absorption spectra and infrared (IR) transmitatance spectra. The photorefractive properties of crystals were experimentally studied by using two-beam coupling. In this experiment we determined the writing time, maximum diffraction efficiency and the erasure time of crystals samples with He-Ne laser. The results showed that the dynamic range, sensitivity and diffraction efficiency were dependent on the Mg doping concentration, and the Mg(4.58mol%):Ce:Cu:LiNbO3 crystal was the most proper holographic recording media material among the six crystals studied in the paper.
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