镁铟共掺杂铌酸锂晶体的生长及光学性能(英文)

GROWTH OF Mg,In CO-DOPED LITHIUM NIOBATE CRYSTALS AND THEIR OPTICAL PROPERTIES

在同成分铌酸锂(LiNbO3,LN)熔体中掺入3%(摩尔分数,下同)MgO,并分别掺入0.5%,1%,1.5%In2O3,用提拉法生长了一系列Mg:In:LN晶体。通过紫外-可见吸收光谱测试确定了晶体样品的组成和缺陷结构。通过透射光斑畸变法检测Mg:In:LN晶体抗光损伤能力。结果表明:Mg:In:LN晶体抗光损伤能力比纯LN晶体提高2个数量级。以波长为1 064 nm的Nd:YAG激光为基频光源,对Mg:In:LN晶体的倍频性能进行了测试。结果表明:Mg:In:LN晶体的相位匹配温度在室温附近,Mg:In:LN晶体的倍频效率要高于In:LN晶体和Mg:LN晶体。

A series of Mg:In:LiNbO3(Mg:In:LN) crystals co-doped with 3%(mole fraction,the same below) MgO and 0.5%,1% or 1.5% In2O3 were grown by the Czochralski method.The crystal composition and structure defects were analyzed by ultravio-tude compared with that of pure LN crystal.Using a Nd:YAG laser with a wavelength of 1 064 nm as the fundamental frequency light,the second harmonic generation(SHG) property of the Mg:In:LN crystals was measured.The results show that the phase-matching temperature of the Mg:In:LN c...