• Spectroscopy and Spectral Analysis
  • Vol. 34, Issue 6, 1473 (2014)
YAN Fang1、2、*, ZHANG Zhao-hui1, ZHAO Xiao-yan1, SU Hai-xia1, LI Zhi1, and ZHANG Han1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
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    DOI: 10.3964/j.issn.1000-0593(2014)06-1473-04 Cite this Article
    YAN Fang, ZHANG Zhao-hui, ZHAO Xiao-yan, SU Hai-xia, LI Zhi, ZHANG Han. Discussion of Scattering in THz Time Domain Spectrum Tests[J]. Spectroscopy and Spectral Analysis, 2014, 34(6): 1473 Copy Citation Text show less

    Abstract

    Using THz-TDS to extract the absorption spectrum of a sample is an important branch of various THz applications. Basically, we believe that the THz radiation scatters from sample particles, leading to an obvious baseline increasing with frequencies in its absorption spectrum. The baseline will affect the measurement accuracy due to ambiguous height and pattern of the spectrum. The authors should try to remove the baseline, and eliminate the effects of scattering. In the present paper, we investigated the causes of baselines, reviewed some of scatter mitigating methods and summarized some of research aspects in the future. In order to validate the correctness of these methods, we designed a series of experiments to compare the computational accuracy of molar concentration. The result indicated that the computational accuracy of molar concentration can be improved, which can be the basis of quantitative analysis in further researches. Finally, with comprehensive experimental results, we presented further research directions on THz absorption spectrum that is needed for the removal of scattering effects.
    YAN Fang, ZHANG Zhao-hui, ZHAO Xiao-yan, SU Hai-xia, LI Zhi, ZHANG Han. Discussion of Scattering in THz Time Domain Spectrum Tests[J]. Spectroscopy and Spectral Analysis, 2014, 34(6): 1473
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