We describe an experimental and theoretical characterization of rectangular resonant cavities integrated into parallel-plate waveguides, using terahertz pulses. When the waveguide is excited with the lowest-order transverse- electric mode, these cavities exhibit resonances with narrow linewidths. Broadband transmission spectra are compared with the results of mode-matching calculations, for various cavity dimensions.
© 2011 Optical Society of America
Original Manuscript: February 14, 2011
Revised Manuscript: March 17, 2011
Manuscript Accepted: March 20, 2011
Published: April 14, 2011
Victoria Astley, Blake McCracken, Rajind Mendis, and Daniel M. Mittleman, "Analysis of rectangular resonant cavities in terahertz parallel-plate waveguides," Opt. Lett. 36, 1452-1454 (2011)