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采用提拉法生长了不同Sc掺杂的Sc:Mn:Fe:LiNbO_3晶体,通过紫外-可见光谱测试分析了Sc:Mn:Fe:LiNbO_3晶体的缺陷结构,利用光斑畸变法表征了其抗光损伤能力。结果表明:当Sc_2O_3的浓度超过阈值浓度(1.5%,摩尔分数)时,Sc:Mn:Fe:LiNbO_3晶体的抗光损伤能力远远高于未达到阈值浓度的晶体,其紫外-可见光谱将发生红移;当Sc_2O_3的浓度未达到阈值浓度时,随着Sc掺量的增加.Sc:Mn:Fe:LiNbO_3晶体的紫外-可见光谱将发生紫移。
The Sc-doped Sc: Mn: Fe: LiNbO_3 crystal was grown by Czochralski method. The defect structure of Sc: Mn: Fe: LiNbO_3 crystal was analyzed by UV-Vis spectroscopy. ability. The results show that the Sc: Mn: Fe: LiNbO_3 crystal has a much better ability to resist light damage than the one that does not reach the threshold concentration when the concentration of Sc_2O_3 exceeds the threshold concentration (1.5%, mole fraction), and its UV- When the concentration of Sc_2O_3 does not reach the threshold concentration, the UV-Vis spectrum of Sc: Mn: Fe: LiNbO_3 crystal will shift with increasing Sc content.