中文摘要：

利用水热法制备了新型氟化镧掺钕（LaF3：Nd）纳米材料，其结构为六方晶型，纳米尺寸在25nm左右；利用超声波分散技术，制备成了一系列具有不同稀土分散浓度的纳米分散液。其钕离子浓度可达到1×10^20cm^-3。可见一近红外透射光谱表明，对于5mm光程的纳米分散液，其在1053nm处的透射率大于85％，与掺钕透明陶瓷的透射率相当。荧光寿命测试结果显示，该稀土纳米材料（La0.95Nd0.05F3）在分散液中的寿命值为200μs，与粉末相比，降低了3．8％，表明这种低荧光猝灭率、高离子浓度、高透射率的纳米分散液将是一种可用于高重复率、高功率、超短脉冲的流体激光工作物质。

英文摘要：

A new type of neodymium-doped lanthanum fluoride （LaF3： Nd） nanoparticles are synthesized by hydrothermal method. It exhibits hexagonal structure and a size of about 25 nm. A series of different concentrations of LaF3 ： Nd nanoparticles dispersion are prepared by ultrasonic technology. The visible-near-infrared spectra show that the dispersion with the optical path of 5 mm and neodymium ion concentration of 1×10^20cm^-3 shows high transmittance of 85 % at 1053 nm. The lifetime of the La0.95 Nd0.05 F3 nanoparticles dispersion is 200μs, compared with that of the powder, it is reduced by 3.8 %. These results indicate that the LaF3： Nd nanoparticles dispersion with low fluorescence quenching rate, high ion concentration and high transmittance is a kind of promising material used for high repetition rate, high-power and ultra short pulse liquid laser.