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Proceedings Paper

A micromechanical beam-steering device for terahertz systems
Author(s): Timothy D. Drysdale; David R. S. Cumming
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Paper Abstract

Beam-steering techniques are required to fully exploit terahertz imaging systems. We propose and model a device employing artificial dielectric techniques to provide a variable phase-control medium. The device consists of two interlocking artificial dielectric surfaces that are initially aligned parallel to each other. By mechanically introducing a relative tilt between the plates, a transmitted wave is subjected to a graded phase delay and thus the beam is steered away from the normal. Continuous and large steering angles are possible. We predict a practical device constructed from a silicon substrate could steer TE beams by up to 4.6 degrees.

Paper Details

Date Published: 8 December 2004
PDF: 7 pages
Proc. SPIE 5619, Passive Millimetre-Wave and Terahertz Imaging and Technology, (8 December 2004); doi: 10.1117/12.578303
Show Author Affiliations
Timothy D. Drysdale, Univ. of Glasgow (United Kingdom)
David R. S. Cumming, Univ. of Glasgow (United Kingdom)

Published in SPIE Proceedings Vol. 5619:
Passive Millimetre-Wave and Terahertz Imaging and Technology
Roger Appleby; J. Martyn Chamberlain; Keith A. Krapels, Editor(s)

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