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首页> 外文期刊>Physica status solidi, B. Basic research >ESTIMATING CRITICAL-POINT PARAMETERS OF MODULATED REFLECTANCE SPECTRA
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ESTIMATING CRITICAL-POINT PARAMETERS OF MODULATED REFLECTANCE SPECTRA

机译：估计调制反射光谱的临界点参数

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摘要

Two new methods, based on the 3-point method and a Kramers-Kronig transformation, were recently published for estimating the energy, broadening, phase, and amplitude of critical points in modulated reflectance spectra which are describable by Aspnes' third derivative functional form. The use of the techniques is demonstrated by applying them to example experimental spectra, which are photo-reflectance measurements of stress-induced splitting of the direct band gap E(0) transition in bulk GaAs. The results are compared and contrasted with those obtained from a least-squares fit of a theoretical model to the experimental spectra. [References: 28]
机译：最近发布了基于三点法和Kramers-Kronig变换的两种新方法，用于估计调制反射光谱中临界点的能量，展宽，相位和幅度，这是Aspnes的三阶导数函数形式所描述的。通过将这些技术应用于示例实验光谱，证明了该技术的使用，这些实验光谱是在大块GaAs中应力引起的直接带隙E（0）跃迁分裂的光反射测量。将结果与理论模型与实验光谱的最小二乘拟合获得的结果进行比较和对比。 [参考：28]

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