Low-power Terahertz Time-Domain Spectroscopy with optimized electro-optical detection

Stefan Gorenflo, Iliyana Hinkov, Armin Lambrecht, Bernd Fischer, Matthias Hoffmann, Hanspeter Helm, Peter Uhd Jepsen

    Research output: Contribution to journalJournal articleResearchpeer-review


    A Terahertz Time-Domain Spectroscopy (THz-TDS) system with electro-optical detector based on a ZnTe crystal is presented. The pump laser is a Ti:Sa laser with pulse duration of approx. 10 fs at a central wavelength of 800 nm. Using an optimized detection configuration, a signal-to-noise ratio better than 103 is achieved, applying an optical laser power of only 25mW. Several substances can be clearly distinguished on the basis of their specific THz absorption spectra.
    Original languageEnglish
    JournalTechnisches Messen - T M
    Issue number7-8
    Pages (from-to)430-439
    Publication statusPublished - 2005


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