Abstract The elemental composition of Ge–Se glasses prepared by different methods and the distribution of Ge and Se along the bulk sample length are investigated by inductively coupled plasma atomic emission spectrometry. The estimated uncertainty of Ge and Se content measurement is 0.02–0.05 at.% (P = 0.95). To date, these results are the most accurate for determining the elemental composition of optical Ge-based chalcogenides. The minimum required mass of the analyzed glass samples does not exceed 1 mg. Partial phase separation in the Ge–Se system leads to a significant (±2 at.%) deviation of the chemical composition of Ge–Se glasses along the length of the bulk sample from the specified value. This is the first time that the elemental composition of single-index Ge–Se fibers along the fiber length has been studied. The rod drawing method allows the fabrication of optical fibers with composition deviation along the length of 0.03–0.05 at.%. In the case of drawing by the crucible method, the deviations of the fiber composition can reach 0.16 at.% compared with the initial glass sample.

中文翻译：

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电感耦合等离子体原子发射光谱法检测Ge-Se块状玻璃和光纤中的元素分布

摘要 通过电感耦合等离子体原子发射光谱法研究了通过不同方法制备的 Ge-Se 玻璃的元素组成以及 Ge 和 Se 沿整个样品长度的分布。Ge 和 Se 含量测量的估计不确定度为 0.02–0.05 at.% (P = 0.95)。迄今为止，这些结果对于确定光学 Ge 基硫属元素化物的元素组成是最准确的。被分析的玻璃样品的最小要求质量不超过 1 毫克。Ge-Se 系统中的部分相分离导致 Ge-Se 玻璃的化学成分沿着大块样品的长度与指定值存在显着 (±2 at.%) 偏差。这是第一次研究了沿纤维长度的单折射率 Ge-Se 纤维的元素组成。拉杆法允许制造沿长度为 0.03–0.05 at.% 的成分偏差的光纤。在用坩埚法拉伸的情况下，与初始玻璃样品相比，纤维成分的偏差可达 0.16 at.%。