The development of the THz wire waveguide was a crucial enabling step in the effort to realize “real world” applications of THz technology. A more efficient and robust method of coupling THz pulses to the waveguide was required. A photoconductive THz antenna with radial symmetry was designed and evaluated using finite element method modeling software. Successful testing of the novel radial antennas show that FEM modeling is a powerful tool for studying various engineering and physics issues associated with the development of THz technology.

1. D. Mittleman, ed., “Sensing with Terahertz Radiation,” 2002, Heidelberg: Springer-Verlag.

2. G. Gallot, et al., “Terahertz Waveguides,” J. Opt. Soc. Am. B, 2000. 17: pps. 851-863.

3. K. Wang and D.M. Mittleman, “Metal Wires for Terahertz Waveguiding,” Nature, 2004. 432: pps. 376-379.

4. J.A. Deibel, M.D. Escarra, and D.M. Mittleman, “Photoconductive Terahertz Antenna with Radial Symmetry,” Elect. Ltrs., 2005. 41(5): pps. 226-228.

5. J.A. Deibel, et al., “Enhanced Coupling of Terahertz Radiation to Cylindrical Wire Waveguides,” Opt. Express, 2006. 14: pps. 279-290.

6. P. Schreier, “COMSOL Multiphysics Helps Explore the Last Frontier in the Electromagnetic Spectrum,” COMSOL News. 2006.

Jason Deibel is a post-doctoral research associate in the Department of Electrical and Computer Engineering at Rice University, Houston, Texas. He received a B.A. in physics and mathematics from Transylvania University and a Ph.D. in applied physics from the University of Michigan, Ann Arbor, Mich. He can be reached at jdeibel@rice.edu.

Daniel Mittleman is an associate professor in the Department of Electrical and Computer Engineering at Rice University, Houston, Texas. He received a B.S. in physics from the Massachusetts Institute of Technology and a M.S. and Ph.D. in physics from the University of California, Berkeley, Calif. He can be reached at daniel@rice.edu.

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