"Terahertz spectroscopy" emerged about 16 years ago with the demonstration that nearly single cycle pulses of far-infrared (FIR) radiation could be generated, sent through free space, and subsequently detected in the time-domain. Since then, THz spectroscopy has become an active area with studies ranging from condensed matter physics to gas-phase spectroscopy to biomedical imaging. This paper describes optical pump - THz probe measurements of transient photoconductivity in CdSe quantum dots, and transient photoconductivity in colloidal nanocrystalline TiO/sub 2/. THz emission experiments of ultrafast demagnetization experiments are described as well.


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    Title :

    Learning new chemistry and physics with THz light


    Contributors:


    Publication date :

    2005-01-01


    Size :

    433393 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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