Nd:Lu2O3材料由于具有高热导率、低声子能量和优异的光学特性而成为非常有前景的高功率固体激光器用的增益介质.但Lu2O3单晶的熔点超过2400℃,难以生长,而Lu2O3陶瓷既能在低温下制备,又具有与晶体相当的光学性质和激光性能从而备受关注.本研究制备了高透明的Nd:Lu2O3陶瓷并对其光学性质和激光性能进行探究.以共沉淀法制备的纳米粉体为原料,采用真空烧结结合热等静压(HIP)两步烧结法制备了1.0at％Nd:Lu2O3透明陶瓷.对制备的粉体、素坯和陶瓷的微结构进行了表征:HIP后处理的陶瓷平均晶粒尺寸是724.2 nm.厚度为1.0 mm的1.0at％Nd:Lu2O3透明陶瓷在1100 nm处的直线透过率是82.4％,样品在806 nm处的吸收截面为1.50×10-20 cm2,而根据荧光光谱计算得到的发射截面为6.5×10-20 cm2.分别在878.8和895.6 nm波长激发下,1.0at％Nd:Lu2O3透明陶瓷4F3/2→4I11/2跃迁的平均荧光寿命均为169μs.当输出耦合镜的透过率TOC=2.0％时,退火后的1.0at％Nd:Lu2O3透明陶瓷获得了最大输出功率为0.47 W的准连续(QCW)激光输出,斜率效率为8.7％.本研究成功制备了显微结构均匀、高透明度的1.0at％Nd:Lu2O3陶瓷,并展示了其在固体激光增益介质领域的广阔应用潜力.“,”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.