Frontiers of Optoelectronics, 2009, 2 (3): 239, 网络出版: 2012-10-08
Dynamic range criterion of THz spectrum for amino acids measurements
Dynamic range criterion of THz spectrum for amino acids measurements
terahertz (THz) time domain spectroscopy absorption spectrum dynamic range wavelet transform quantitative analysis amino acids
摘要
Abstract
Terahertz (THz) absorption spectra have been applied to measure the compositions of amino acid samples. Because the concentration information about a specific composition is involved in its spectrum, keeping the spectrum length and dynamic range as wide as possible is essential for precise measurements. It is well known that a spectrum is always contaminated by apparatus noises. In this paper, we present a criterion for noise cutting based on wavelet transform, which usually extends the range determined by traditional threshold criterion. Finally, the improvement on measurement precision shows the validity of the new criterion.
Zhaohui ZHANG, Zuxing ZHANG, Yixin YIN, Yuko UENO, Rakchanok RUNGSAWANG, Katsuhiro AJITO. Dynamic range criterion of THz spectrum for amino acids measurements[J]. Frontiers of Optoelectronics, 2009, 2(3): 239. Zhaohui ZHANG, Zuxing ZHANG, Yixin YIN, Yuko UENO, Rakchanok RUNGSAWANG, Katsuhiro AJITO. Dynamic range criterion of THz spectrum for amino acids measurements[J]. Frontiers of Optoelectronics, 2009, 2(3): 239.
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