Bilir Gökhan, Kaya Ayfer, Cinkaya Hatun, Eryürek Gönül
Department of Physics Engineering, Istanbul Technical University, 34469 Istanbul, Turkey.
Department of Physics Engineering, Istanbul Technical University, 34469 Istanbul, Turkey.
Spectrochim Acta A Mol Biomol Spectrosc. 2016 Aug 5;165:183-190. doi: 10.1016/j.saa.2016.04.042. Epub 2016 Apr 21.
This paper presents a detailed spectroscopic investigation of zinc tellurite glasses with the compositions (0.80-x-y) TeO2+(0.20) ZnO+xEr2O3+yYb2O3 (x=0, y=0; x=0.004, y=0; x=0, y=0.05 and x=0.004, y=0.05 per moles). The samples were synthesized by the conventional melt quenching method. The optical absorption and emission measurements were conducted at room temperature to determine the spectral properties of lanthanides doped zinc tellurite glasses and, to study the energy transfer processes between dopant lanthanide ions. The band gap energies for both direct and indirect possible transitions and the Urbach energies were measured from the absorption spectra. The absorption spectra of the samples were analyzed by using the Judd-Ofelt approach. The effect of the ytterbium ions on the emission properties of erbium ions was investigated and the energy transfer processes between dopant ions were studied by measuring the up-conversion emission properties of the materials. The color quality parameters of obtained visible up-conversion emission were also determined as well as possibility of using the Er(3+) glasses as erbium doped fiber amplifiers at 1.55μm in infrared emission region.
本文对组成为(0.80 - x - y)TeO₂+(0.20)ZnO + xEr₂O₃ + yYb₂O₃（每摩尔x = 0，y = 0；x = 0.004，y = 0；x = 0，y = 0.05以及x = 0.004，y = 0.05）的碲酸锌玻璃进行了详细的光谱研究。样品通过传统的熔体淬火法合成。在室温下进行了光吸收和发射测量，以确定镧系元素掺杂的碲酸锌玻璃的光谱特性，并研究掺杂镧系离子之间的能量转移过程。从吸收光谱中测量了直接和间接可能跃迁的带隙能量以及乌尔巴赫能量。通过Judd - Ofelt方法对样品的吸收光谱进行了分析。研究了镱离子对铒离子发射特性的影响，并通过测量材料的上转换发射特性研究了掺杂离子之间的能量转移过程。还确定了获得的可见上转换发射的颜色质量参数，以及在1.55μm红外发射区域将Er(3+)玻璃用作掺铒光纤放大器的可能性。
