研究目的
To fabricate and characterize the optical properties of 2at.%Yb:LuYAG mixed crystal using nanocrystalline powders and optical floating zone method, aiming to reduce antisite defects compared to traditional methods.
研究成果
The OFZ method combined with MPP-derived powders successfully produces high-quality Yb:LuYAG crystals with reduced antisite defects, as evidenced by lower XEL intensity at 320 nm and good optical properties, suggesting a promising route for optical applications.
研究不足
The study is limited to specific growth conditions and materials; potential optimizations could include varying doping concentrations or exploring other growth parameters to further reduce defects.
1：Experimental Design and Method Selection:
The study uses a wet chemical mixed precipitant co-precipitation (MPP) method for powder synthesis and optical floating zone (OFZ) method for crystal growth to achieve high-quality crystals with reduced defects.
2：Sample Selection and Data Sources:
High purity powders (Lu2O3, Y2O3, Yb2O3, HNO3, Al(NO3)3, NH4HCO3, NH4OH) are used as starting materials.
3：List of Experimental Equipment and Materials:
Equipment includes OFZ furnace (Crystal Systems Inc., FZ-T-12000-X-I-S-SU), TG-DSC apparatus (STA 449 F3, NETZSCH), X-ray diffractometer (Dmax-2550, Rigaku), spectrophotometer (PL, Ed), Harshow 2000 TL reader, and home-made XEL spectrometer. Materials include various chemicals and a YAG seed crystal.
4：Experimental Procedures and Operational Workflow:
Powders are synthesized via MPP, calcined, and used to make feed rods. Crystals are grown in OFZ furnace with controlled growth rate (6-10 mm/h), rotation rates (15 rpm), and cooling rate (600 °C/h). Measurements include TG-DSC, XRD, transmittance, PL, TSL, and XEL spectra.
5：Data Analysis Methods:
Data is analyzed using standard techniques, including curve fitting for TSL with general order kinetics equation.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
