Ho³⁺/Yb³⁺共掺杂卤化物改性透明碲酸盐玻璃中增强的2-5μm发射。
Enhanced 2-5 μm emission in Ho³⁺/Yb³⁺ codoped halide modified transparent tellurite glasses.
作者信息
Zhang Wenjun, Lin Jian, Jia Yujie, Zhang Shuo, Zhao Junhong, Sun Guangyao, Ye Song, Ren Junjiang, Rong Liang
机构信息
School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.
School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2015 Jan 5;134:388-98. doi: 10.1016/j.saa.2014.06.010. Epub 2014 Jun 26.
Ho(3+)/Yb(3+) codoped TeO₂-WO₃-ZnO-ZnX₂(X=F, Cl) glasses were prepared by melt-quenching method. The absorption spectra, transmittance spectra, X-ray diffraction (XRD) curves, Raman spectra and mid-infrared fluorescence spectra were measured, along with the Judd-Ofelt intensity parameters, stimulated emission and absorption cross-sections were calculated to evaluate the effects of halide amount of the spectroscopic properties. It is shown that the introduction of an appropriate amount of halide can further improve the mid-infrared fluorescence intensity through an enhanced phonon-assisted energy transfer between Ho(3+)/Yb(3+) ions and the energy transfer mechanisms are investigated quantitatively in detail by calculating energy transfer microparameters and phonon contribution ratios. The results indicate that this kind of glasses is a promising material for mid-infrared optical fiber.
采用熔融淬火法制备了Ho(3+)/Yb(3+)共掺杂的TeO₂-WO₃-ZnO-ZnX₂（X = F、Cl）玻璃。测量了吸收光谱、透射光谱、X射线衍射（XRD）曲线、拉曼光谱和中红外荧光光谱，并计算了Judd-Ofelt强度参数、受激发射和吸收截面，以评估卤化物含量对光谱性质的影响。结果表明，引入适量的卤化物可以通过增强Ho(3+)/Yb(3+)离子之间的声子辅助能量转移进一步提高中红外荧光强度，并通过计算能量转移微观参数和声子贡献率对能量转移机制进行了详细的定量研究。结果表明，这类玻璃是一种很有前途的中红外光纤材料。
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