We report the development of a time-resolved broadband (100 GHz-12 THz) terahertz (THz) spectroscopy system using photoconductive antennas both to generate and detect ultrashort THz pulses. This system has been used to study the far-infrared vibrational modes of crystalline saccharides, and to understand the dynamics of both inter- and intra-molecular interactions. An anomalous temperature dependent absorption was observed, giving information about changes in the binding forces with temperature (300 K-4 K), the degree of anharmonicity of the vibrational energy levels, and the nature of the individual vibrational modes.


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    Title :

    Temperature-dependent vibrational dynamics of molecules studied by time-resolved broadband terahertz spectroscopy


    Contributors:
    Upadhya, P.C. (author) / Shen, Y.C. (author) / Davies, A.G. (author) / Linfield, E.H. (author)


    Publication date :

    2004-01-01


    Size :

    150697 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English