基于产生3 μm中红外激光的Er³⁺能量转换过程与能级体系，建立了掺铒氟化物光纤激光器的速率方程和传输方程，系统地研究了泵浦结构和光纤长度对输出功率、斜率效率以及腔内泵浦和激光功率分布的影响，为后续的实验提供理论依据。仿真确定了小泵浦功率的光纤激光器理想的光纤长度为4~8 m，最终实验选择4.7 m光纤完成了中红外掺铒氟化物光纤激光器连续激光输出光路的搭建， 在泵浦功率为5 W、中心波长为2.797 μm处实现了最大功率1.038 W、斜率效率20.4％的连续激光输出。

随着软玻璃光纤的发展和光纤激光器的进步，越来越多的研究人员采用以软玻璃光纤代替石英光纤的方式，得到高功率中红外超连续谱光源。通过广泛阅读国内外关于氟化物玻璃光纤、硫系玻璃光纤和碲酸盐玻璃光纤等软玻璃光纤产生超连续谱的相关文献，本文综述了近年来利用这三类光纤产生中红外超连续谱光源的研究进展。目前氟化物玻璃光纤在实验中的应用最为广泛，且研发进度较快，获得的中红外超连续谱覆盖范围在2~5 μm，最大输出功率可达30 W；硫系玻璃光纤产生的中红外超连续谱光源带宽可达10 μm以上，但输出功率较低；碲酸盐玻璃光纤由于材料中羟基难以去除，在中红外超连续谱的实验中进展较为缓慢；而氟碲酸盐光纤在近几年发展迅速，可能成为未来中红外超连续谱研究的理想介质。

3 μm激光处于分子指纹区，在医疗外科、气体检测、**应用等领域都有重要的应用价值。Er³⁺∶ZBLAN光纤激光器具有效率高、可集成的优点，是3 μm激光的主要输出方式。本文从铒离子跃迁产生3 μm激光出发，围绕Er³⁺∶ZBLAN光纤激光器，介绍了3 μm激光产生的结构原理及能级系统，总结了实现该波段高功率连续输出和脉冲输出的技术方案和研究进展，重点介绍了基于不同材料可饱和吸收体的调Q和锁模激光器实验研究，并对目前实现3 μm波段高功率输出需要解决的问题进行了分析，最后对Er³⁺∶ZBLAN激光器的发展方向进行了展望。

通过传统的熔融淬火技术以及后续热处理法制备了Tm³⁺/Yb³⁺共掺含LaF₃纳米晶锗酸盐微晶玻璃。通过DTA和XRD研究其热性质和LaF₃纳米晶的可控析出。通过透过光谱和上转换发光光谱研究了玻璃的光学性能。利用荧光强度比（FIR）技术研究了微晶玻璃样品在980 nm激光激发下的上转换发光光谱与温度的依赖关系。研究发现，该微晶玻璃样品在313~573 K温度范围内的最大绝对灵敏度S_a和最大相对灵敏度S_r分别为2.6×10^-4 K^-1（573 K）和2.3×10^-2 K^-1（313 K）。结果表明，Tm³⁺/Yb³⁺共掺含LaF₃纳米晶锗酸盐微晶玻璃在温度传感领域具有潜在的应用前景。

As a leader of long persistent luminescence (LPL) materials, the optical properties of aluminate phosphor have remained unsurpassed for many years. As a powder material, its practical application will always be limited to the field of security signs. In this paper, the SrAl2O4:Eu2+, Dy3+ inorganic solid material with comparable LPL properties to powder materials was obtained. The crystallization mechanism and crystallite micro-morphology of inorganic glass materials have been studied, and a new opinion is put forward that the large-size SrAl2O4 crystallites in the glass matrix are stacked by rod-shaped crystals arranged in a regular direction. In addition, the SrAl2O4:Eu2+, Dy3+ glass obtained cannot only collect high-energy photons but also is sensitive to low-energy sunlight. The results show that the material exhibits superior performance in LPL, thermoluminescence, and photostimulable luminescence. Based on this property, a new application of this material in the field of information storage was explored. This paper has a certain reference value for the development and application of aluminate LPL materials in the field of smart optical information storage.

Up-convertion (UC) perovskite Er³⁺-doped PbTiO₃ (Er-PTO) nanoparticles with green and red emissions were synthesized via the hydrothermal method. The UC properties were manipulated by adjusting the concentration of Er³⁺ ions dopant. The green emission intensity was decreased as the doping concentration increased from 1% to 4% (mole fraction), whereas the red emission intensity was increased. The influences of Er³⁺ ions on the temperature-sensing performance were further investigated. The results demonstrated that Er-PTO nanoparticles with doping 1% Er³⁺ ions possessed a sensitivity of 3.1 × 10^-3 K^-1 at 475 K, presenting a high potential in optical heating devices.