As for an optically homogeneous glass with thickness tantamount to a few millimeters, the longer wavelength side of its optical transmission window normally takes shape as a result of multiphonon absorption. Mainly due to the complexity inherent in glass structures, a quantitative numerical assessment of the vibrational spectrum of a given glass composition is normally not a simple task. The conspicuously dissimilar infrared transmission edges between oxide and halide glasses, for example, can be understood qualitatively in terms of the Szigeti relation; however, the relatively insignificant but clearly distinguishable changes in infrared transmission edge resulting from compositional modification in a glass‐forming system are lacking a numerical assessment. Herein, it is experimentally verified that the infrared transmission edge of Ge‐based chalcogenide glasses can be correlated in a quantitative manner with their chemical composition through combining their average bond energy and molar mass. Ternary or quaternary chalcogenide glasses exceeding 100 different compositions are used to justify this numerical correlation.

中文翻译：

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锗基硫族化物玻璃中红外传输的成分依赖性

对于厚度等于几毫米的光学均质玻璃，其光学透射窗的较长波长侧通常由于吸收多声子而成形。主要由于玻璃结构固有的复杂性，对给定玻璃组合物的振动光谱进行定量数值评估通常不是一件容易的事。例如，可以根据Szigeti关系定性地理解氧化物和卤化物玻璃之间明显不同的红外透射边缘。但是，由于玻璃成型系统中的成分改变而导致的红外透射边缘的相对微不足道的变化却没有明显区别，目前尚缺乏数值评估。在这里 实验证明，通过结合平均键能和摩尔质量，可以将Ge基硫族化物玻璃的红外透射边缘与其化学成分定量地关联起来。超过100种不同成分的三元或四元硫属化物玻璃可用于证明这种数值相关性。