Liquid water absorption is one of the most enduring problems facing THz imaging and spectroscopy in biomedical applications. The absorption coefficient for liquid water shows a very high THz absorption, 200 cm1 at 1 THz [1]. This strong absorption is a big hurdle for T-ray spectroscopy and imaging of liquid or even wet samples [2]. This paper proposes a novel method for parameter extraction of a liquid, using a double modulated differential time-domain spectroscopy (DTDS) technique with dual-thickness measurement. The proposed technique improves on the previous work by replacing the required sample dithering technique [3] with a rotating spinning wheel resulting in an improved noise performance up to two orders of magnitude.


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    Title :

    Novel T-ray Liquid Spectroscopy via Double Modulated Differential Time-Domain Spectroscopy


    Contributors:
    Balakrishnan, J. (author) / Fischer, B. (author) / Mickan, S. P. (author) / Abbott, D. (author)


    Publication date :

    2006-09-01


    Size :

    1239555 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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