Accurate Optical Parameters Extracting of Non-Polar Organic Solvents in the Terahertz Range
LIU Chang, WANG Xin-ke, SUN Wen-feng, ZHANG Yan*
Department of Physics, Capital Normal University, Beijing Key Lab for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing 100048, China
Abstract：Six kinds of non-polar organic solvents were measured by using terahertz time-domain spectroscopy (THz-TDS), including positive hexane, cyclohexane, petroleum ether, carbon tetrachloride, carbon bisulfide, and toluene. These non-polar organic solvents are often used to solve other organics, so knowing the parameters of these non-polar organic solvents are important for studying optical properties of other organics in the frequency range of terahertz. The influence of the cuvette on THz signal was considered. Accurate optical parameters including refractive index and absorption coefficient were analyzed by the novel expression of the transfer function. In addition, according to the relationship among these absorption coefficients of five organic solvents, the polarity relationship can be determined.
刘 畅，王新柯，孙文峰，张 岩* . 非极性有机溶剂光学参数的太赫兹波精确测量[J]. 光谱学与光谱分析, 2011, 31(11): 2886-2890.
LIU Chang, WANG Xin-ke, SUN Wen-feng, ZHANG Yan* . Accurate Optical Parameters Extracting of Non-Polar Organic Solvents in the Terahertz Range . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(11): 2886-2890.
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