研究目的
Investigating the 2.7 μm spectroscopic properties of Er3+/Yb3+-codopedoxyfluoride glass containing gallium for mid-infrared laser applications.
研究成果
The 1.5 and 2.7 μm luminescence properties of Er3+/Yb3+-codopedoxyfluoride glass containing gallium were investigated. The intensity of Er3+:4I11/2→4I13/2 at 2.7 μm is four times higher when the optimal Er3+:Yb3+ ions ratio is 1:0.5 than that of Er3+ ions singly doped sample. The emission cross section at 2.7μm in the YbFGa-0.5 glass was 1.63×10?20 cm2 when using a 980 nm LD excitation, which suggests an efficiency improvement of luminescence by Yb3+ ions codoping. The energy transfer efficiency is calculated to be 77.8 % for the YbFGa-0.5 glass around 2700 nm. The quantum efficiency at 1530 nm is 65.6%.
研究不足
The technical and application constraints of the experiments, as well as potential areas for optimization, are not explicitly mentioned in the abstract.
1：Experimental Design and Method Selection:
The oxyfluoride glasses containing gallium were prepared by typical melting and quenching methods. The operating temperature was 1400 °C for 30 min in a platinum crucible with nitrogen (N2) atmosphere.
2：Sample Selection and Data Sources:
High quality CaCO3, Ga2O3, BaF2, Er2O3, and Yb2O3 raw powder were used.
3：List of Experimental Equipment and Materials:
PerkinElmer Lambda 750 UV/VIS/NIR spectrophotometer, Nicolet 6700 Fourier-transform infrared (FT-IR) spectrometer, Triax 320 spectrometer with the liquid nitrogen cooled InAs detector.
4：Experimental Procedures and Operational Workflow:
The absorption spectrum was recorded from 300–1800 nm. Transmittance was measured from
5：5 to 9 μm. The emission spectra from 2550–2800 nm was recorded using a 980 nm laser diode as a pump source. Data Analysis Methods:
Judd–Ofelt theory was used to confirm the spectroscopic properties. The emission cross section was calculated in terms of the Fuchtbauer–Ladenburg theory.
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
