用于液体激光介质的Nd~(3+)离子掺杂氟化镧纳米颗粒的制备与性能表征

设计并合成了掺杂不同Nd3+离子浓度的氟化镧纳米颗粒,并用油酸进行了表面修饰,使得这类纳米颗粒可分散于常见的有机溶剂中形成透明、均一、稳定的溶液。对纳米颗粒的结构、晶相以及发光性能进行了表征。固体和溶液材料在1 060 nm都有强的发射峰,说明纳米晶格可有效地保护Nd3+离子免受外界环境对发光的猝灭影响。纳米颗粒有机溶液的吸收损耗和散射损耗测试结果表明,其总损耗系数能够满足激光介质材料的损耗要求,为该材料的实用化打下了基础。

Synthesis and Characterization of Nd3+ Doped LaF3 Nanocrystals for Liquid Laser Medium

LaF₃ nanocrytals with different Nd³⁺ concentration were designed, synthesized and modified by oleic acid. This kind of nanocrystals can be dissolved in many organic solvents and form a transparent, uniform and stable solution. The structure, crystal phase and luminescence properties of LaF₃:Nd³⁺ nanocrytals were characterized and studied. The nanocrytals show strong emission at 1 060 nm not only in solid but also in solution. This illustrates that the nanocrystal lattice can efficiently protect Nd³⁺ ions from the influence of environment on the luminescence. Meanwhile, the absorption loss and scattering loss of LaF₃ nanocrystals in organic solution were tested by our own system. The total loss coefficient can meet the requirements for laser medium material. These results show that LaF₃:Nd³⁺ nanocrystals may be used for liquid laser medium in the future.