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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Extracting accurate optical parameters from glasses usingterahertz time-domain spectroscopy
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Extracting accurate optical parameters from glasses usingterahertz time-domain spectroscopy

机译：使用太赫兹时域光谱仪从眼镜中提取准确的光学参数

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摘要

Terahertz time-domain spectroscopy (THz-TDS) can be used to characterize the optical properties of glasses in a frequency regime that is barely accessible by other techniques. It can be used to measure the electric field of a pulse of broadband terahertz radiation with frequency components between 0.1 and 4.5 THz propagating through the material of interest. Data processing is required to transform the information from the raw time-domain waveform data into the absorption spectrum. While most crystalline materials exhibit a number of distinct spectral features, amorphous materials show an almost featureless frequency response in the terahertz range and very accurate measurements of the absorption coefficient are required to characterize the materials. The accuracy of existing data processing techniques is limited as a result of truncating the time-domain data to remove multiple reflections of the terahertz pulse within the sample material and by neglecting scattering losses at the surface of the sample material. Using the experimental THz-TDS data of As2S3 we present a new approach to extract accurate optical parameters from THz-TDS experimental data.
机译：太赫兹时域光谱（THz-TDS）可用于表征其他技术几乎无法获得的频率范围内的玻璃光学特性。它可用于测量在目标材料中传播的0.1至4.5 THz频率分量的宽带太赫兹辐射脉冲的电场。需要进行数据处理才能将信息从原始时域波形数据转换为吸收光谱。尽管大多数晶体材料表现出许多不同的光谱特征，但非晶材料在太赫兹范围内显示出几乎没有特征的频率响应，并且需要非常精确的吸收系数测量来表征这些材料。由于截断时域数据以去除样品材料内太赫兹脉冲的多次反射以及通过忽略样品材料表面的散射损耗，现有数据处理技术的准确性受到限制。利用As2S3的THz-TDS实验数据，我们提出了一种从THz-TDS实验数据中提取准确光学参数的新方法。

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