Investigations on growth and two-wavelength holographic storage properties varied with RuO2 codoping in Fe:LiNbO3 crystals

A series of Ru:Fe:LiNbO₃ crystals with fixed concentration of Fe₂O₃(0.1 wt%) and varied RuO₂ were grown by the Czochralski technique via the optimum growth condition. After growth, the crystals were cut to wafers and then oxidized to Nb₂O₅ powder. The X-ray diffraction and UV–vis spectra were measured to analyze the defect structure of the crystals. The blue photorefractive properties of Ru:Fe:LiNbO₃ crystals were investigated in a two-wave mixing experiment at the wavelength of 476 nm. The results showed that Ru:Fe:LiNbO₃ crystals with high concentration of RuO₂ are promising candidates for holographic storage. The two-wavelength nonvolatile holographic storage experiment was carried out with sample 6.

Source:Journal of Crystal Growth

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