Mode Matching of Terahertz Radiation to Cylindrical Wire Waveguides using Radially Symmetric Photoconductive Antennas

Authors

Jason A. Deibel, Wright State University - Main CampusFollow
Kanglin Wang
Matthew Escarra
Daniel M. Mittleman

Document Type

Conference Proceeding

Publication Date

7-2006

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Abstract

Wire waveguides have recently been shown to be valuable for transporting pulsed terahertz radiation. A radially polarized surface wave is excited when a linearly polarized terahertz pulse is focused on the gap between the wire waveguide and another metal structure. We calculate the input coupling efficiency using a simulation based on the finite element method (FEM). Additional FEM results indicate that enhanced coupling efficiency can be achieved through the use of a radially symmetric photoconductive antenna. Experimental results confirm that such an antenna can generate terahertz radiation which couples to the radial waveguide mode with greatly improved efficiency.

Comments

Presented at the IEEE Antennas and Propagation Society International Symposium, Albuquerque, NM, July 9-14, 2006.

Repository Citation

Deibel, J. A., Wang, K., Escarra, M., & Mittleman, D. M. (2006). Mode Matching of Terahertz Radiation to Cylindrical Wire Waveguides using Radially Symmetric Photoconductive Antennas. IEEE Antennas and Propagation Society International Symposium, 2403-2406.
https://corescholar.libraries.wright.edu/physics/869

DOI

10.1109/APS.2006.1711079