Abstract：Optical parameters which macroscopically characterize optical properties of materials indirectly reflect microscopic peculiarities of materials. Accurate extractions of optical parameters are significant for the research of microscopic behavior and macroscopic responses of materials. In recent years, as a new spectral analysis method, terahertz time-domain spectroscopy (THz-TDS) technology has become a research hotspot. Due to the low THz radiation energy and narrow pulse width (picosecond range), THz-TDS technology is nondestructive with high-temporal-resolution when being used to extract optical parameters of samples. This paper summarizes optical parameters extraction methods by using THz transmission and reflection spectroscopy technology, emphatically introduces several classic methods and analyses, along with their respective merits and demerits, and finally discusses the challenges of THz-TDS technology in optical parameters extraction. In conclusion, the transmission methods are adaptive for measuring substances which slightly absorb terahertz radiation, whereas the reflection methods are suitable for measuring materials with strong absorption capacity.
韩晓惠，张 瑾*，杨 晔，马宇婷，常天英，崔洪亮 . 基于太赫兹时域光谱技术的光学参数提取方法的研究进展 [J]. 光谱学与光谱分析, 2016, 36(11): 3449-3454.
HAN Xiao-hui, ZHANG Jin*, YANG Ye, MA Yu-ting, CHANG Tian-ying, CUI Hong-liang . Review on the Methodology for Optical Parameter Extraction with Terahertz Time-Domain Spectroscopy. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(11): 3449-3454.
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