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)

Publisher: Springer

Abstract:

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.

Keywords: surface plasmons; excitation; prism; screen; coupling

Language: English

Document Type: Research article

Affiliations: 1: Institute of Physics, Gostauto 12, 2029 Vilnius, Lithuania, Fax: (3702) 235182. vikvai@ktl.mii.lt

Publication date: 1999-03-01

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• In this Subject: General & Civil Engineering ,  Optics & Light
• By this author: Vaicikauskas V. ;  Antanavicius R. ;  Januskevicius R.

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