Terahertz waveguides with low transmission losses: Characterization and applications

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Colleges, School and Institutes

External organisations

  • University College London
  • NEST, CNR-Istituto Nanoscienze and Scuola Normale Superiore
  • Rutgers, The State University of New Jersey


Research in the area of terahertz (THz) waveguides has seen a rapid progress recently and has led to demonstration of THz waveguides with transmission losses comparable to losses in air. We will discuss dielectric-lined hollow metallic waveguides, in which THz waves propagate with attenuation as low as 1 dB/m and dispersion of 6 ps/(THz·m), and compare them to other low-loss THz waveguides. As a key technique for THz waveguide research, we will discuss the application of THz near-field microscopy in combination with THz time-domain spectroscopy for waveguide characterization. This technique allows us to map spatial profiles of normal modes and to measure transmission loss and dispersion spectra for individual modes within the THz range.


Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2014
EventTerahertz Emitters, Receivers, and Applications V - San Diego, United States
Duration: 17 Aug 201418 Aug 2014


ConferenceTerahertz Emitters, Receivers, and Applications V
CountryUnited States
CitySan Diego


  • Dispersion, Hollow metallic waveguides, Mode interference, Near-field imaging, Terahertz, Terahertz spectroscopy, Transmission loss, Waveguide modes