Efficiency of FIR Sew Excitation by Aperture, Prism, and Mesh Methods
Authors: Vaicikauskas V.; Antanavicius R.; Januskevicius R.
Source: International Journal of Infrared and Millimeter Waves, Volume 20, Number 3, March 1999 , pp. 447-452(6)
The high efficiencies (25-41%) of Surface Electromagnetic Waves excitation were obtained in the FIR region on metals, doped A3B5 semiconductors and ferroelectric crystals. These efficiencies are considerably higher than obtained in the 10m region on the metal surfaces. The experimentally measured optimum gapheight correlates with the calculated SEW field decay constant into the air. The surface roughness plays very a important part in SEW excitation and propagation characteristics.
Document Type: Research article
Publication date: 1999-03-01