Metallic and 3D-printed dielectric helical terahertz waveguides

Optics Express
Dominik Walter VogtRainer Leonhardt

Abstract

We investigate guidance of Terahertz (THz) radiation in metallic and 3D-printed dielectric helical waveguides in the frequency range from 0.2 to 1 THz. Our experimental results obtained from THz time-domain spectroscopy (THz-TDS) measurements are in very good agreement with finite-difference time-domain (FDTD) simulations. We observe single-mode, low loss and low dispersive propagation of THz radiation in metallic helical waveguides over a broad bandwidth. The 3D-printed dielectric helical waveguides have substantially extended the bandwidth of a low loss dielectric tube waveguide as observed from the experimental and simulation results. The high flexibility of the helical design allows an easy incorporation into bench top THz devices.

References

Oct 1, 2008·Optics Express·Yat Hei Lo, Rainer Leonhardt
Mar 14, 2013·Optics Express·Jessienta AnthonyAlexander Argyros

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