Increased Er3+ upconversion in tellurite fibers and glasses by co-doping with Yb3+
Increased Er3+ upconversion in tellurite fibers and glasses by co-doping with Yb3+
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DOI：
10.1016/j.optmat.2010.08.021
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发表时间：
2010-11-01
影响因子：
3.9
通讯作者：
Wetter, N. U.
中科院分区：
文献类型：
--
作者：
Jakutis, J.;Gomes, L.;Wetter, N. U.
报道了Er ~（3+）-Yb ~（3+）共掺TeO ~（2-）GeO ~（2-）PbO玻璃和光纤中红外-可见光频率上转换的研究。研究了不同Yb ~（3+）浓度共掺杂对上转换发光的影响。我们观察到的绿色和红色的上转换强度的增加高达400倍，随着Yb 3+浓度的增加，并解释在能量转移过程中所涉及的机制。泵浦源是在980 nm处与F-2（7/2）-> F-2（5/2）跃迁共振发射的二极管激光器。碲酸盐玻璃在氧化物中具有较低的声子能量（约为700 cm ~（-1））、较高的折射率（约为2）、较大的透射窗口（350 nm ~ 6500 nm），并且容易拉成光纤。我们还表征了从这些组合物获得的纤维，并测量了与散装玻璃相比的类似特性。(C)2010 Elsevier B. V.保留所有权利。
We report infrared-to-visible frequency upconversion in Er3+-Yb3+ co-doped TeO2-GeO2-PbO glasses and fibers. The upconversion is investigated as a function of the co-doping with different Yb3+ concentration. We observe an increase of the green and red upconversion intensities of up to 400 times with increasing Yb3+ concentration and explain the mechanism involved in the energy transfer process. The pump source is a diode laser emitting at 980 nm in resonance with the F-2(7/2) -> F-2(5/2) transition. The tellurite glasses have a relatively low phonon energy (similar to 700 cm(-1)) among oxides, high refractive index (similar to 2), large transmission window (350 nm-6500 nm) and can be easily pulled into fibers. We also characterized fibers obtained from these compositions and measured similar characteristics when compared to bulk glasses. (C) 2010 Elsevier B.V. All rights reserved.