研究目的
Investigating the efficient 2.87 μm emission of Ho3+ via Nd3+ sensitization in Nd,Ho:LaF3 crystal under 808 nm LD excitation.
研究成果
Nd,Ho:LaF3 crystal exhibits considerable emission cross-section and quantum efficiency, making it a promising gain medium for 2.87 μm laser applications under 808 nm LD excitation. The Nd3+ ions effectively sensitize the Ho3+ ions and deactivate the Ho3+:5I7 energy level.
研究不足
The study is limited to the analysis of Nd,Ho:LaF3 crystal under specific conditions (808 nm LD excitation) and does not explore other potential excitation wavelengths or co-doping ions.
1：Experimental Design and Method Selection:
The study involved the growth of Nd,Ho:LaF3 and Ho:LaF3 crystals by the Bridgman method. The spectroscopic properties were analyzed using Judd-Ofelt theory.
2：Sample Selection and Data Sources:
The concentrations of Nd3+ and Ho3+ ions were measured by ICP-AES.
3：List of Experimental Equipment and Materials:
A Lambda 1050 UV/VIS/NIR spectrophotometer and Edinburgh Instruments FLS920 were used for absorption and fluorescence spectra measurements, respectively.
4：Experimental Procedures and Operational Workflow:
The crystals were grown, and their absorption and fluorescence spectra were measured under 808 nm excitation. Fluorescence decay curves were also measured.
5：Data Analysis Methods:
The spectral parameters were calculated using Judd-Ofelt theory, and the emission cross-section was calculated by the Fuchtbauer-Ladenburg equation.
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