We present the ultrafast measurement and analysis of sub-picosecond freespace THz pulses using long lifetime (=1 ns) photoconducting antennas. We then directly correlate these results with those obtained using typical ultrashort lifetime photoconducting antennas. At low optical gating intensities GaAs based antennas exhibit a higher responsivity and signal-to-noise ratio than typical antennas based on radiation-damaged silicon-on-sapphire. Our power scaling results indicate the potential use of these devices with amplified optical pulses, large-aperture detectors, and THz antenna array.


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    Titel :

    Measurement of free-space THz pulses via long-lifetime photoconductors


    Beteiligte:
    Sun, F.G. (Autor:in) / Wagoner, G.A. (Autor:in) / Bentz, D. (Autor:in) / Zhang, X.-C. (Autor:in)


    Erscheinungsdatum :

    01.01.1995


    Format / Umfang :

    174493 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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