We show that optical pump - terahertz (THz) probe spectroscopy is a suitable experimental tool for exploring laser induced ionization and plasma formation in gases. Plasma was produced in gaseous oxygen by focused amplified femtosecond pulses. Multi-photon versus strong-field character of the photoionization are investigated using different pump wavelengths (400 and 800 nm), polarization states and intensity. A Drude model is used to evaluate the plasma dynamics.


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    Titel :

    Photoionization mechanisms of oxygen probed by terahertz pulses


    Beteiligte:
    Mics, Z. (Autor:in) / Kadlec, F. (Autor:in) / Kuzel, P. (Autor:in) / Jungwirth, P. (Autor:in) / Bradforth, S.E. (Autor:in) / Apkarian, V.A. (Autor:in)


    Erscheinungsdatum :

    2005-01-01


    Format / Umfang :

    462780 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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