A systematic investigation is presented, for the first time, of a 1000 ppmw (parts per million, by weight) Dy³⁺‐doped Ge–As–Ga–Se chalcogenide glass series, with a fixed low Ga content of 1 atomic% (at. %), suitable for active mid‐infrared fiber optics. Seven glasses constitute the series, which have increasing average coordination number from 2.49 to 2.61, in steps of 0.02, with the GeSe₂, As₂Se₃, and Ga₂Se₃ stoichiometries kept. Glass formation is confirmed using X‐ray diffraction and differential scanning calorimetry. Fourier transform infrared spectroscopy is reported for the series. Parallel plate viscometry enables prediction of fiber‐drawing temperatures and, with differential thermal analysis, determines the potential for fiber fabrication. X‐ray diffraction of samples after parallel‐plate viscometry shows that Ge₂₅As₉Ga₁Se₆₅ (at. %) alone, in the glass‐series, devitrifies to form the single‐crystalline phase: monoclinic‐GeSe₂; scanning electron microscope imaging suggests that this phase is both surface and bulk grown. Overall, the recommended host glass at. % compositions for doping with rare‐earth ions and drawing to active mid‐infrared fiber are: Ge_17.5As₁₈Ga₁Se_63.5, Ge₁₅As₂₁Ga₁Se₆₃, and Ge_12.5As₂₄Ga₁Se_62.5.

中文翻译：

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低镓含量，掺IIIIII，Ge-As-Ga-Se硫族化物玻璃，用于有源中红外光纤

首次系统地研究了1000 ppmw（百万分之重量）掺Dy ^3+的Ge-As-Ga-Se硫族化物玻璃系列，其固定低Ga含量为1原子％（ at。％），适用于有源中红外光纤。GeSe ₂，As ₂ Se ₃和Ga ₂ Se ₃组成七个系列，它们的平均配位数从2.49增加到2.61，以0.02为步长。保持化学计量。使用X射线衍射和差示扫描量热法可以确定玻璃的形成。该系列报道了傅里叶变换红外光谱。平行板粘度测定法可以预测纤维拉伸温度，并通过差热分析确定纤维制造的潜力。平行板粘度测定后样品的X射线衍射表明，在玻璃系列中，单独的Ge ₂₅ As ₉ Ga ₁ Se ₆₅（at。％）会失透形成单晶相：单斜晶GeSe ₂; 扫描电子显微镜成像表明，该相既是表面生长的又是本体生长的。总体来说，推荐主机玻璃在。掺杂稀土离子并吸引到活性中红外纤维的组成百分比为：Ge _17.5 As ₁₈ Ga ₁ Se _63.5，Ge ₁₅ As ₂₁ Ga ₁ Se ₆₃和Ge _12.5 As ₂₄ Ga ₁ Se _62.5。