Mg：Er：LiNbO3晶体的激光性能和550nm寿命特性研究

Study on laser property and 550nm lifetime characteristics of lithium niobate doped with magnesium and erbium

为了测试Mg∶Er∶LiNbO3晶体的光损伤阈值和红外光谱,采用Czochralski技术生长出优质的Mgx∶Ery∶LiNbO3(x=0.02,0.04,0.06,0.08,y=0.01(摩尔分数))晶体。通过实验得出Mg(0.06)∶Er∶LiNbO3和Mg(0.08)∶Er∶LiNbO3晶体抗光损伤阈值比LiNbO3晶体提高2个数量级以上,且它们的红外光谱OH-吸收峰移到3535cm-1附近;在波长510nm^580nm范围内得到Mg∶Er∶LiNbO3晶体稳态发射谱。结果表明,Mg2+浓度增加抗光损伤能力增加,掺进摩尔分数为0.04的MgO是Mg∶Er∶LiNbO3晶体寿命最长的晶体。

In order to measure the photo damage threshold and infrared spectra of Mg：Er：LiNbO3 crystals, the high quality Mgx：Ery： LiNbO3 （ x = 0.02,0.04,0.06,0.08, y = 0.01 （ mole fraction） ） crystals were grown by Czochralski technique. The experiment indicated that the photo damage resistance ability of Mg （0.06） ： Er： LiNbO3 and Mg （0.08） ： Er： LiNbO3 crystals improved the two orders magnitude over higher than that of LiNbO3 crystals and their OH- absorption peak of infrared spectra shifts to 3535cm^-1 nearby. The experiment gained the steady state shoot spectra of Mg：Er：LiNbO3 crystals in wavelength 510nm 580nm finding doped with mole fraction 0.04 of MgO. The results showed that the Mg^2＋ concentration increased the photo damage resistance ability increased and the lifetime of Mg： Er： LiNbO3 crystal doped with mole fraction 0.04 of MgO was the longest.