Measured and simulated performance of a ceramic micromechanical beam steering device at 94 GHz

Drysdale, T.D., Walsby, E.D. and Cumming, D.R.S. (2008) Measured and simulated performance of a ceramic micromechanical beam steering device at 94 GHz. Applied Optics, 47(13), pp. 2382-2385. (doi: 10.1364/AO.47.002382)

Abstract

We report the first experimental demonstration of a transmission-mode micromechanical beam steering device for use in standoff terahertz imaging and spectroscopy. The device was constructed by laminating laser-cut 96% alumina sheets to form two plates with interlocking rectangular gratings of 762 μm period and was characterized at 94 GHz in a free-space measurement setup with an automated elevation scan. Plate tilts as great as 6° deflected the transmitted beam by 6° for the transverse electric (TE) polarization and by 4° for the transverse magnetic polarization. Finite-difference time-domain simulations of the TE performance were in good agreement with the measurements.

• Item Type: Articles
• Keywords: Instrumentation, measurement, and metrology, Phase modulation Optical devices, Micro-optical devices, Physical optics, Birefringence, Other areas of optics, Microwaves.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Cumming, Professor David and Drysdale, Dr Timothy
• Authors: Drysdale, T.D., Walsby, E.D., and Cumming, D.R.S.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Applied Optics
• Publisher: Optical Society of America
• ISSN: 1559-128X
• Copyright Holders: Copyright © 2008 Optical Society for America
• First Published: First published in Applied Optics 47(13):2382-2385
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher