Related Experiment Video
Updated: Jun 21, 2026

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
Published on: July 8, 2013
Terahertz transmission properties of an individual slit in a thin metallic plate
J W Lee1, T H Park, Peter Nordlander
1Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, TX 77005, USA.
Abstract:
We report on the terahertz transmission properties through a single slit in a thin metallic film. The properties are studied by comparing the transmissions of TE- and TM-polarized electromagnetic waves over a broad spectral range from the geometrical regime to the subwavelength limit. In the geometrical regime, the remarkable terahertz transmission due to guided modes is observed even without the contribution of surface waves. Whereas in the subwavelength limit, the surface charge oscillations associated with the TM-polarized guided mode give rise to strong transmission enhancement. The nature of the mechanisms for the terahertz transmission is elucidated using theoretical simulations of the near-field distributions and electromagnetic energy flow.
Related Concept Videos
Generating Electromagnetic Radiations
Standing Waves in a Cavity
Transmission Electron Microscopy
The de Broglie Wavelength

