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2.9 μm luminescence properties of Pr3+/Ho3+ codoped Ge-Ga-Se glasses
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A series of chalcogenide glasses based on Ge25Ga10Se65 system co-doped with Ho3+/Pr3+ ions of different ratios were synthesized by melt-quenching technique. The absorption spectra,mid-infrared fluorescence and lifetime of glass samples under 908 nm laser excitation were measured. The emission cross section of Ho3+:5I7→5I8 and absorption cross section of Pr3+:3H4→3F2 were calculated. The energy transfer efficiency between Ho3+ and Pr3+ ions with different Pr3+ ion concentrations have been discussed. Through fitting the 2.0 μm fluorescence decay curves of Ho3+ ions,the energy transfer regime was judged. The results prove thatTm3+ is an efficient sensitizer which enhances the Ho3+: 2.9 μm fluorescence intensity significantly.
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Title: 2.9 μm luminescence properties of Pr3+/Ho3+ codoped Ge-Ga-Se glasses
Description:
A series of chalcogenide glasses based on Ge25Ga10Se65 system co-doped with Ho3+/Pr3+ ions of different ratios were synthesized by melt-quenching technique.
The absorption spectra,mid-infrared fluorescence and lifetime of glass samples under 908 nm laser excitation were measured.
The emission cross section of Ho3+:5I7→5I8 and absorption cross section of Pr3+:3H4→3F2 were calculated.
The energy transfer efficiency between Ho3+ and Pr3+ ions with different Pr3+ ion concentrations have been discussed.
Through fitting the 2.
0 μm fluorescence decay curves of Ho3+ ions,the energy transfer regime was judged.
The results prove thatTm3+ is an efficient sensitizer which enhances the Ho3+: 2.
9 μm fluorescence intensity significantly.
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