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2.9 μm luminescence properties of Pr3+/Ho3+ codoped Ge-Ga-Se glasses

Zhu Jun Dai Shi-Xun Wang Xun-Si Shen Xiang Xu Tie-Feng Nie Qiu-Hua

2.9 μm luminescence properties of Pr3+/Ho3+ codoped Ge-Ga-Se glasses

Zhu Jun, Dai Shi-Xun, Wang Xun-Si, Shen Xiang, Xu Tie-Feng, Nie Qiu-Hua
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  • Received Date:  17 November 2009
  • Accepted Date:  09 December 2009
  • Published Online:  15 August 2010

2.9 μm luminescence properties of Pr3+/Ho3+ codoped Ge-Ga-Se glasses

  • 1. College of Information Science and Engineering,Ningbo University,Ningbo 315211,China

Abstract: 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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