Abstract
In:Ce:Mn:LiNbO3 crystals were grown by Czochralski technique with various [Li]/[Nb] ratios of 0.946, 1.05, 1.20, 1.38 in the melt. The infrared (IR) spectrum and inductively coupled plasma–atomic emission spectroscopy (ICP–AES) were used to investigate defect structure of these crystals. The nonvolatile holographic storage properties of In:Ce:Mn:LiNbO3 crystals were studied with the two-wave mixing technique. The grating was recorded by a Kr+ laser (476nm) and read by a He–Ne laser (633nm). Experimental results indicated In:Ce:Mn:LiNbO3 crystals with the [Li]/[Nb] ratios of 1.38 has the shortest access times of 310s and the highest photorefractive sensitivity of 3.23mm/J.
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