研究目的
Investigating the spectral luminescence properties of Ho3+ ions in active media codoped with Tb3+, Pr3+ and Yb3+ for mid-infrared laser development.
研究成果
The study demonstrates that codoping Ho3+ active media with Yb3+, Tb3+, or Pr3+ ions can significantly reduce the fluorescence lifetime of the lower laser level 5I7, making these materials promising for developing compact LD-pumped lasers operating at the wavelength of 2.8-3 μm.
研究不足
The study is limited by the specific dopants and host materials used, and the findings may not be directly applicable to other systems without further investigation.
1：Experimental Design and Method Selection:
The study focused on the spectral luminescence properties of Ho3+ ions in active media codoped with Tb3+, Pr3+ and Yb3+ ions. The Bridgman technique was used for growing CaF2 crystals, and the laser-heated pedestal growth method was employed for obtaining Gd2O3, Y2O3 single crystal fibers.
2：Sample Selection and Data Sources:
Samples included CaF2 crystals and Gd2O3, Y2O3 single crystal fibers doped with Ho3+, Yb3+, Tb3+, Pr3+ ions.
3：List of Experimental Equipment and Materials:
The study utilized the Bridgman technique and laser-heated pedestal growth method for sample preparation.
4：Experimental Procedures and Operational Workflow:
Absorption spectra were measured, and the fluorescence lifetime of 5I6 and 5I7 manifolds of Ho3+ ions was investigated.
5：Data Analysis Methods:
The fluorescence lifetime data were analyzed to understand the depopulation of the lower laser level 5I7 in Ho3+ ions.
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