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在LiNbO3(LN)中分别掺入0.5%(摩尔分数,下同),1%和2% MgO,0.03%(质量分数)Fe2O3,配料中n(Li)/n(Nb)=1.38,采用顶部籽晶溶液生长法生长近化学计量比Fe:Mg:LiNbO3(near-stoichiometric Fe:Mg:LiNbO3,Fe:Mg:SLN)晶体。测试了晶体的红外光谱、抗光损伤能力和存储性能。结果表明:Fe:2%Mg:LN晶体的OH-吸收峰移到3535cm-1,抗光损伤能力比Fe:LN提高3个数量级。Fe:0.5%Mg:LN晶体的灵敏度、动态范围和抗光损伤能力比Fe:LN晶体分别高2.5倍,2倍和1个数量级。以Fe:2%Mg:LN晶体和Fe:LN晶体分别作为存储介质,进行大容量存储实验。在一个公共体积内实现1200幅体全息图的存储。Fe:2%Mg:LN晶体的存储质量优于Fe:LN晶体。
0.5% (mole fraction), 1% and 2% MgO, 0.03% (mass fraction) Fe2O3 and n (Li) / n (Nb) = 1.38 in LiNbO3 (LN) The growth of near-stoichiometric Fe: Mg: LiNbO3, Fe: Mg: SLN crystals by the seed crystal growth method was studied. The crystal’s infrared spectrum, light damage resistance and storage properties were tested. The results show that the OH-absorption peak of Fe: 2% Mg: LN crystal shifts to 3535cm-1, and the light damage resistance is 3 orders of magnitude higher than that of Fe: LN. The sensitivity, dynamic range and optical damage resistance of Fe: 0.5% Mg: LN crystal are 2.5 times, 2 times and 1 order of magnitude higher than that of Fe: LN crystal respectively. Fe: 2% Mg: LN crystals and Fe: LN crystals were used as the storage medium for large-capacity storage experiments. In a public volume to achieve 1200 volume hologram storage. The storage quality of Fe: 2% Mg: LN crystals is better than that of Fe: LN crystals.