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  1. No Access

    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)

  2. No Access

    Chapter and Conference Paper

    Development of Terahertz Frequency Quantum Cascade Lasers for the Applications as Local Oscillators

    We report the development of terahertz frequency quantum cascade lasers for applications as local oscillators. A range of active region designs and waveguide structures have been characterised in order to deve...

    Y. J. Han, L. H. Li, A. Valavanis… in THz for CBRN and Explosives Detection and … (2017)