Open AccessInhibiting the TE_1-mode diffraction losses in terahertz parallel-plate waveguides using concave plates
Author(s) -
Marx Mbonye,
Rajind Mendis,
Daniel M. Mittleman
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.027800
Subject(s) - terahertz radiation , optics , diffraction , radius of curvature , curvature , waveguide , transverse plane , radius , dispersion (optics) , materials science , diffraction efficiency , physics , mean curvature , mathematics , geometry , computer science , engineering , computer security , structural engineering , mean curvature flow
We present numerical and experimental results on inhibiting diffraction losses associated with the lowest order transverse electric (TE1) mode of a terahertz (THz) parallel-plate waveguide (PPWG) via the use of slightly concave plates. We find that there is an optimal radius of curvature that inhibits the diffraction for a given waveguide operating at a given frequency. We also find that introducing this curvature does not introduce any additional group-velocity dispersion. These results support the possibility of realizing long range transport of THz radiation using the TE1 mode of the PPWG.