Effect of BaF2 addition on luminescence properties of Er3+/Yb3+ co-doped phosphate glasses
来源期刊：JOURNAL OF RARE EARTHS2018年第1期
论文作者：K.Linganna R.Narro-García P.Manasa C.K.Jayasankar
文章页码：58 - 63
摘 要：Er3+/Yb3+ co-doped phosphate glasses（P2O5-Al2O3-BaO-BaF2-K2O-Er2O3-Yb2O3） with varying BaF2 content,were prepared by a conventional melt quenching technique and their spectroscopic properties were examined through the Raman, absorption, emission and decay measurements. Raman spectra(350-1400 cm-1) of the Er3+/Yb3+ co-doped phosphate glasses with varying BaF2 content, were recorded upon laser excitation at 785 nm. Near infrared luminescence spectra were measured in the1400-1600 nm region under 970 nm diode laser excitation and characteristic band was observed at1533 nm corresponding to 4Ⅰ13/2→4Ⅰ15/2 transition of Er3+ ion. The decay curves for the 4Ⅰ13/2 level of Er3+ion, were measured and the lifetime is found to decrease from 7.94 to 7.70 ms when BaF2 content increases from 0 to 8 mol% and then increases up to 7.83 ms with further increase in BaF2 content（12 mol%）. The emission cross-section.lifetime and figure of merit for the 4Ⅰ13/2→4Ⅰ15/2 transition of Er3+ ion were evaluated and compared to the other host matrices. The upconversion luminescence was measured and intense red emission was observed for all the studied samples.
K.Linganna1,2，R.Narro-García3，P.Manasa1，C.K.Jayasankar1
1. Department of Physics,Sri Venkateswara University2. Advanced Optical Lens Research Center,Korea Photonics Technology Institute (KOPTI)3. Centro de Física Aplicada y Tecnología Avanzada UNAM
摘 要：Er3+/Yb3+ co-doped phosphate glasses（P2O5-Al2O3-BaO-BaF2-K2O-Er2O3-Yb2O3） with varying BaF2 content,were prepared by a conventional melt quenching technique and their spectroscopic properties were examined through the Raman, absorption, emission and decay measurements. Raman spectra(350-1400 cm-1) of the Er3+/Yb3+ co-doped phosphate glasses with varying BaF2 content, were recorded upon laser excitation at 785 nm. Near infrared luminescence spectra were measured in the1400-1600 nm region under 970 nm diode laser excitation and characteristic band was observed at1533 nm corresponding to 4Ⅰ13/2→4Ⅰ15/2 transition of Er3+ ion. The decay curves for the 4Ⅰ13/2 level of Er3+ion, were measured and the lifetime is found to decrease from 7.94 to 7.70 ms when BaF2 content increases from 0 to 8 mol% and then increases up to 7.83 ms with further increase in BaF2 content（12 mol%）. The emission cross-section.lifetime and figure of merit for the 4Ⅰ13/2→4Ⅰ15/2 transition of Er3+ ion were evaluated and compared to the other host matrices. The upconversion luminescence was measured and intense red emission was observed for all the studied samples.
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