无机材料学报2023，Vol.38Issue(3)：350-356,7.DOI:10.15541/jim20220386
Dy3+:Y3Al5O12晶体的光谱与黄色激光性能
Spectroscopic and Yellow Laser Features of Dy3+: Y3Al5O12 Single Crystals
摘要
Abstract
In recent years, yellow laser crystals have raised great attentions owing to their comprehensive applications in the fields such as laser display, laser medical treatment, light detection and ranging (LIDAR), Bose-Einstein condensates, and atomic cooling and trapping. With the development of commercial blue light LD, the direct pumping of Dy3+ doped laser crystals has realized yellow laser based on its transition 4F9/2→6H13/2. In this work, Dy3+: Y3Al5O12 (Dy: YAG) crystals with 0.5％, 1.0％, 2.0％, 3.0％, and 4.0％ (atomic fraction) nominal concentration of Dy3+ were grown using Czochralski method, the reason of crystal crack was discussed. Based on Judd-Ofelt (J-O) theory, the J-O intensity parameters and utilization, and other laser parameters of Dy: YAG crystals with different doping concentrations were evaluated. The effect of the doping concentration of Dy3+ on the spectroscopic performances like fluorescence branching ratio, stimulated emission cross-section, quantum efficiency, were analyzed comprehensively. Among all the five crystals, 1.0％ Dy: YAG has the largest stimulated emission cross-section for 582 nm yellow emission, an intense fluorescence intensity with the 447 nm excitation, and a longer decay time of 0.823 ms. The fluorescence intensity and stimulated emission cross-section of 2.0％ Dy: YAG are slightly less than that of 1.0％ Dy: YAG, but the former has a higher absorption coefficient. Hence, the spectroscopic analysis results show that 1.0％ and 2.0％ are the suitable concentrations of Dy3+ ion in YAG crystal for yellow laser operation by diode pumping. The continuous wave laser with peak at 582.5 nm and the maximum output power of 166.8 μW yellow laser operation were realized in 2.0％ Dy: YAG crystal.关键词
YAG晶体/Dy3+/晶体生长/荧光特性/黄色激光Key words
YAG crystal/Dy3+/crystal growth/fluorescence features/yellow laser分类
信息技术与安全科学引用本文复制引用
杨佳雪,李雯,王燕,朱昭捷,游振宇,李坚富,涂朝阳..Dy3+:Y3Al5O12晶体的光谱与黄色激光性能[J].无机材料学报,2023,38(3):350-356,7.基金项目
National Natural Science Foundation of China(51872286,51832007) （51872286,51832007）
Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China(2021ZR204) （2021ZR204）
Science and Technology Plan Leading Project of Fujian Province(2022H0043,2020H0036) （2022H0043,2020H0036）
Natural Science Foundation of Jiangxi Province(20181BAB211009) （20181BAB211009）
