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为了研究微量Sn掺As2S8非晶态薄膜波导非饱和光阻断效应的内在机理,采用双棱镜耦合技术,对波导样品进行了实验研究,在实验观测数据,分析了薄膜材料内部的化学键结构,结合电子能带理论和轨道杂化理论,建立了非饱和光阻断效应的动力学模型,并对实验数据进行数值拟合,得到了描述非饱和光阻断效应性质的参数。数值分析与实验结果吻合,说明本文模型能解释实验现象,揭示实验本质。
In order to study the intrinsic mechanism of the non-saturated light blocking effect of trace Sn-doped As2S8 amorphous thin-film waveguides, the waveguide samples were experimentally studied by the double-prism coupling technique. The experimental data were used to analyze the chemical bond structures in the thin film materials. Electron band theory and orbital hybridization theory, the dynamic model of the blocking effect of unsaturated light was established. The experimental data were numerically fitted to obtain the parameters describing the blocking effect of unsaturated light. The numerical analysis agrees well with the experimental results, which shows that the model can explain the experimental phenomena and reveal the nature of the experiment.