Measurements of non-linear sub-THz quasi-optical devices


  • Rostyslav F. Dubrovka Queen Mary University of London, United Kingdom
  • Oleksandr Ju. Sushko Queen Mary, University of London, United Kingdom
  • Melusine Pigeon Queen Mary University of London, United Kingdom
  • Peter Alizadeh Queen Mary University of London, United Kingdom
  • Andre Sarker Andy Queen Mary University of London, United Kingdom
  • Robert S. Donnan Queen Mary, University of London, United Kingdom
  • Clive G. Parini Queen Mary University of London, United Kingdom
  • James W. E. Kneller Queen Mary University of London, United Kingdom
  • Theo Kreouzis Queen Mary University of London, United Kingdom



sub-Terahertz, sub-THz, quasi-optical


The paper presents recent developments in designing quasi-optical multipliers in the sub-THz frequency domain. An extensive measurement campaign is described in detail in which issues are addressed concerning the non-trivial nature of the problems met. In particular, attention is paid to impedance measurements of the core element, the integrated antenna-multiplier (dubbed the ‘multenna’), together with the associated experimental apparatus for detection of its higher-order harmonics. Finally, use of a light-sensitive semiconducting organic polymer is demonstrated as a tuneable dielectric that will enable elements of a multenna array to be phase-locked for generation of coherent emission.


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