Abstract

A series of ${\mathrm{ZrO}}_2$-doped $\mathrm{Ru}\text{:}\mathrm{Fe}\text{:}{\mathrm{LiNbO}}_3$ crystals with various Li composition were grown by conventional Czochralski technique. The ${\mathrm{OH}}^{-}$ absorption spectra were measured, and the Lorentzian fitting was employed to analyze the defect structures. The photorefractive properties in these crystals were investigated as a function of Li/Nb ratios. The recording sensitivity of Li-enriched $\mathrm{Zr}\text{:}\mathrm{Ru}\text{:}\mathrm{Fe}\text{:}{\mathrm{liNbO}}_3$ crystal was $1.70\mathrm{cm}/\mathrm{J}$, and the diffraction efficiency was as high as 44.3%, while this crystal could withstand a laser intensity of $3.4\times {10}^4\mathrm{W}/{\mathrm{cm}}^2$ at 476 nm irradiation. Experimental results definitely showed that $\mathrm{Zr}\text{:}\mathrm{Ru}\text{:}\mathrm{Fe}\text{:}{\mathrm{LiNbO}}_3$ crystals were promising blue photorefraction materials for holographic volume storage.

© 2012 Optical Society of America

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