Er:Lu2O3单晶的导模法生长及性能表征

本文以高纯Lu₂O₃、Er₂O₃为原料,使用自主设计、制造的自动等径导模炉,采用导模法(EFG)生长了φ25 mm×20 mm的7.82%(原子数分数)Er:Lu₂O₃单晶,分凝系数为0.92,并探索了退火条件。X射线衍射仪(XRD)结果为纯相,X射线荧光光谱仪(XRF)结果证明杂质含量较低。利用吸收光谱计算在972 nm及1 535 nm附近的吸收截面,分别为3.24×10^-21 cm²、8.43×10^-21 cm²,半峰全宽(FWHM)分别为28.22 nm、27.31 nm。热学性能测试结果表明,在30 ℃时热导率为13.28 W·m^-1·K^-1。利用扫描电子显微镜(SEM)对晶体表面微观形貌进行了表征。

Growth and Property Characterization of Er:Lu2O3 Single Crystals by EFG Method

The high-purity Lu₂O₃ and Er₂O₃ were used as raw materials, using independently design and manufacture automatic equal diameter EFG furnace, 7.82% (atomic fraction) Er:Lu₂O₃ single crystal of φ25 mm×20 mm was grown by the EFG method, and the segregation coefficient is 0.92. Annealing conditions were explored. XRD result is a pure phase, and the XRF result proves that the impurity content is low. The absorption cross-sections around 972 nm and 1 535 nm are calculated using absorption spectra to be 3.24×10^-21 cm²and 8.43×10^-21 cm², and FWHM are 28.22 nm and 27.31 nm, respectively. The thermal property test results show that the thermal conductivity is 13.28 W·m^-1·K^-1 at 30 ℃. The crystal surface micromorphology was characterized by SEM.