Abstract

An investigation was made of the photoelectric and photorefractive properties of barium strontium niobate crystals having the composition (SrxBa1–x)1–y(Nb2O6)y where x =0.61 and y =0.4993, doped with 0.05 and 0.10 wt.% CeO2. The crystals have the following characteristics: a sensitivity of 2×10–3 cm2/J at λ = 0.44 μ with spatial frequencies of 700–2000 lines/mm, a data storage time exceeding 9 months, a maximum diffraction efficiency exceeding 50%, and an unlimited number of read-write cycles. It was established that the holograms were recorded by a diffusion mechanism.

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