Mueckstein, R;
Navarro-Cía, M;
Mitrofanov, O;
(2013)
Mode interference and radiation leakage in a tapered parallel plate waveguide for terahertz waves.
Applied Physics Letters
, 102
(14)
, Article 141103. 10.1063/1.4800772.
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Abstract
To exploit tapered parallel plate waveguides for broadband terahertz (THz) spectroscopy, the impact of the waveguide geometry on transmission of terahertz pulses is investigated experimentally. We find that the approximation of single transverse electro-magnetic mode propagation is insufficient for describing the observed behavior. The TE02 mode plays a particularly important role. The mode composition, however, can be controlled by the gap between the waveguide plates, which affects the main loss mechanism, radiation leakage, and group velocity for the TE02 mode. Balancing the waveguide loss and coupling efficiencies results in an optimal gap for the tapered waveguide.
| Type: | Article |
|---|---|
| Title: | Mode interference and radiation leakage in a tapered parallel plate waveguide for terahertz waves |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.4800772 |
| Publisher version: | http://dx.doi.org/10.1063/1.4800772 |
| Language: | English |
| Additional information: | This work is licensed under the Creative Commons Attribution License, Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/ which permits unrestricted use, distribution, and reproduction in any medium. However, you must attribute the work to the author (but not in any way that suggests that they endorse you or your use of the work). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1396980 |
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