无机材料学报2021，Vol.36Issue(2)：210-216,7.DOI:10.15541/jim20200143
固体激光用Nd:Lu2O3透明陶瓷的制备和光学性能研究
Fabrication and Optical Property of Nd:Lu2O3 Transparent Ceramics for Solid-state Laser Applications
摘要
Abstract
Nd3+ doped Lu2O3 crystal has been suggested to be potential gain medium for high-power solid-state lasers due to the high thermal conductivity, low phonon energy and excellent optical properties. Because of the extremely high melting point of above 2400 ℃, great attention has been paid to the Lu2O3-based transparent ceramics considering the comparable optical properties and laser performance with single crystal. In this work, we aimed at fabricating highly transparent Nd:Lu2O3 ceramics and investigating the optical properties and laser performance. 1.0at％Nd:Lu2O3 ceramics were fabricated by two-step sintering, namely vacuum sintering along with hot isostatic pressing (HIP) method, from coprecipitated nano-powders. The microstructures of the as-prepared powder, green body and ceramics were studied. The average grain size of the HIPed ceramics is 724.2 nm. The final ceramic sample has the in-line transmittance of 82.4％ at 1100 nm (1.0 mm thickness). The absorption cross-section of 1.0at％Nd:Lu2O3 ceramics at 806 nm is 1.50×10-20 cm2 and the calculated emission cross-section from fluorescence spectrum at 1080 nm is about 6.5×10-20 cm2. The mean fluorescence lifetime, 169 μs, of the 4F3/2→4I11/2 was measured at the two excitation wavelengths of 878.8 and 895.6 nm, respectively. Laser performance of the annealed ceramic sample was investigated in quasi-continuous wave (QCW) condition. A maximum laser output power of 0.47 W with a slope efficiency of 8.7％ is obtained by using an output coupler with a transmission of TOC=2.0％. Briefly, laser level Nd:Lu2O3 transparent ceramics with high optical transparency and uniform microstructure have been fabricated, which are promising gain media for solid-state lasers.关键词
Nd:Lu2O3透明陶瓷/共沉淀法/两步烧结/光学性能/激光性能Key words
Nd:Lu2O3 transparent ceramics/co-precipitation/two-step sintering/optical property/laser performance分类
化学化工引用本文复制引用
刘子玉,VANNINI Matteo,李江,TOCI Guido,PIRRI Angela,PATRIZI Barbara,冯亚刚,陈肖朴,胡殿君,田丰,吴乐翔..固体激光用Nd:Lu2O3透明陶瓷的制备和光学性能研究[J].无机材料学报,2021,36(2):210-216,7.基金项目
National Key R&D Program of China (2017YFB0310500) （2017YFB0310500）
Key Research Project of the Frontier Science of the Chinese Academy of Sciences (QYZDB-SSW-JSC022) （QYZDB-SSW-JSC022）
