"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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    Titel :

    Learning new chemistry and physics with THz light


    Beteiligte:


    Erscheinungsdatum :

    01.01.2005


    Format / Umfang :

    433393 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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