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    Chapter and Conference Paper

    Broadband Terahertz Gas Spectroscopy Through Multimode Self-Mixing in a Quantum Cascade Laser

    We present a self-mixing terahertz-frequency gas spectroscopy technique using a multimode quantum cascade laser. A precision-micro-machined external waveguide module and a double-metal quantum cascade laser de...

    Y. J. Han, J. Partington, R. Chhantyal-Pun in Terahertz (THz), Mid Infrared (MIR) and Ne… (2021)