Improvements on the optical properties of Ge-Sb-Se chalcogenide glasses with iodine incorporation
Improvements on the optical properties of Ge-Sb-Se chalcogenide glasses with iodine incorporation
复制标题
掺碘改善 Ge-Sb-Se 硫系玻璃的光学性能
DOI：
10.1016/j.infrared.2015.09.001
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发表时间：
2015-11-01
影响因子：
3.3
通讯作者：
Zhang, Xianghua
中科院分区：
文献类型：
--
作者：
Jiang, Chen;Wang, Xunsi;Zhang, Xianghua
减少玻璃网络缺陷、提高光学透过率是材料研究人员的重要工作。研究了卤碘（I）作为Ge-Sb-Se系硫系玻璃网络改进剂的作用。Ge_（20）Sb_（55）Se_（75-x）I_x（x = 0，5，10，15，20 at.%）系列化合物红外（IR）硫卤玻璃的研究，以减少弱吸收尾（WAT），提高中红外透明度。报道了卤素I对硒基硫系玻璃的物理、热学和光学性质的影响机理。这些玻璃的结构演变也揭示了拉曼光谱和相机成像。逐步取代硒的I增加的光学带隙。WAT和散射损耗显著降低，对应于原始Ge 20 Sb 5 Se 75玻璃中由悬挂带和结构缺陷引起的结构缺陷的逐渐减少。Ge-Sb-Se-I玻璃的最大红外透过率可达80%，有效透过窗口在0.94 ~ 17 μ m之间，而吸收系数在10.16 μ m处降至0.029 cm（-1）。因此，这些材料是开发低损耗红外光纤的有希望的候选者。(C)2015爱思唯尔B. V.保留所有权利。
Decreasing glass network defects and improving optical transmittance are essential work for material researchers. We studied the function of halogen iodine (I) acting as a glass network modifier in Ge-Sb-Se-based chalcogenide glass system. A systematic series of Ge20Sb5Se75-xIx (x = 0, 5, 10, 15, 20 at.%) infrared (IR) chalcohalide glasses were investigated to decrease the weak absorption tail (WAT) and improve the mid-IR transparency. The mechanisms of the halogen I affecting the physical, thermal, and optical properties of Se-based chalcogenide glasses were reported. The structural evolutions of these glasses were also revealed by Raman spectroscopy and camera imaging. The progressive substitution of I for Se increased the optical bandgap. The WAT and scatting loss significantly decreased corresponding to the progressive decrease in structural defects caused by dangling bands and structure defects in the original Ge20Sb5Se75 glass. The achieved maximum IR transparency of Ge-Sb-Se-I glasses can reach up to 80% with an effective transmission window between 0.94 mu m and 17 mu m, whereas the absorption coefficient decreased to 0.029 cm(-1) at 10.16 mu m. Thus, these materials are promising candidates for developing low-loss IR fibers. (C) 2015 Elsevier B.V. All rights reserved.