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Linear and nonlinear optical properties of Ge-As-S films

机译:Ge-As-S薄膜的线性和非线性光学性质

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Spectral dependencies of the optical properties of Ge-As-S films were obtained from the transmission spectra by modified Swanepoel method. The results for optical parameters were analyzed using single oscillator model. Film thickness , d, optical band gap, E_(gopt), oscillator energy E_o, and dispersion energy, E_d, before and after exposure to light were determined. Non-linear optical properties were estimated by means of generalized Miller's rule and classical anharmonic oscillator model.
机译:通过改进的Swanepoel方法从透射光谱中获得了Ge-As-S薄膜光学特性的光谱依赖性。使用单振荡器模型分析光学参数的结果。在曝光之前和之后,确定膜厚度d,光学带隙E_(gopt),振荡器能量E_o和色散能量E_d。非线性光学性质是通过广义米勒法则和经典非谐振荡器模型估算的。

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