Efficiency of FIR SEW excitation by aperture, prism, and mesh methods

Authors
Vaicikauskas, V Antanavicius, R Januskevicius, R
Citation
V. Vaicikauskas et al., Efficiency of FIR SEW excitation by aperture, prism, and mesh methods, INT J INFRA, 20(3), 1999, pp. 447-452
Citations number
9
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES
ISSN journal
01959271 → ACNP
Volume
20
Issue
3
Year of publication
1999
Pages
447 - 452
Database
ISI
SICI code
0195-9271(199903)20:3<447:EOFSEB>2.0.ZU;2-K
Abstract
The high efficiencies (25-41%) of Surface Electromagnetic Waves excitation were obtained in the FIR region on metals, doped,A(3)B5 semiconductors and ferroelectric crystals. These efficiencies are considerably higher than obt ained in the 10 mu m region on the metal surfaces. The experimentally measu red optimum gapheight correlates with the calculated SEW field decay consta nt into the air. The surface roughness plays very a important part in SEW e xcitation and propagation characteristics.