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Proceedings Paper

Comparison of Fourier-transform analysis with wavelet-transform analysis in terahertz time-domain spectroscopy
Author(s): Liying Lang; Xueguang Wang; Yuqiang Deng; Qirong Xing; Lu Chai; Qingyue Wang
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Paper Abstract

In this paper, we applied wavelet-transform to analysis the water vapor absorption spectroscopy in terahertz range, and compared with conventional Fourier-transform analysis in terahertz time-domain spectroscopy. The extracted absorption lines are in excellent agreement with the results of using Fourier-transform analysis. The results show that wavelet-transform analysis of the absorption spectrum delivers accurate absorption lines in THz range. Because the results are shown in a time-frequency domain, it gives a more intuitive image on when the absorption happens at which frequency. Combining wavelet-transform technique with THz-TDS, we hope there births a new spectroscopy: the wavelet-transform terahertz time-domain spectroscopy.

Paper Details

Date Published: 29 January 2007
PDF: 6 pages
Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62795W (29 January 2007); doi: 10.1117/12.725463
Show Author Affiliations
Liying Lang, Hebei Univ. of Engineering (China)
Xueguang Wang, Hebei Univ. of Engineering (China)
Yuqiang Deng, Tianjin Univ. (China)
Qirong Xing, Tianjin Univ. (China)
Lu Chai, Tianjin Univ. (China)
Qingyue Wang, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 6279:
27th International Congress on High-Speed Photography and Photonics
Xun Hou; Wei Zhao; Baoli Yao, Editor(s)

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