Optimization of photomixers and antennas for continuous-wave terahertz emission

Gregory, I.S., Baker, C., Tribe, W.R., Bradley, I.V., Evans, M.J., Linfield, E.H., Davies, A.G. and Missous, M. (2005) Optimization of photomixers and antennas for continuous-wave terahertz emission. IEEE Journal of Quantum Electronics, 41 (5). pp. 717-728. ISSN 0018-9197

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Abstract

We have studied terahertz emission from interdigitated finger photomixers coupled to planar antenna structures. Using both pulsed and continuous-wave excitation, polarization measurements reveal that the antenna design dominates the properties of the radiated output at frequencies below 0.6 THz, while the efficiency at higher frequencies is additionally dependent on the design of the photomixer fingers. We have produced terahertz maps of the device, characterizing the photomixer by measuring the generated power as a function of the excitation position. Together, these measurements have allowed us to understand better the distinct roles of the photomixer and antenna in emission at different freq

Item Type:	Article
Copyright, Publisher and Additional Information:	Copyright © 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	continuous-wave (CW), LT-GaAs, photoconductive antenna, photomixer, terahertz
Academic Units:	The University of Leeds > Faculty of Engineering (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Institute of Microwaves and Photonics (Leeds)
Depositing User:	Repository Officer
Date Deposited:	10 Oct 2005
Last Modified:	08 Feb 2013 17:02
Published Version:	http://dx.doi.org/10.1109/JQE.2005.844471
Status:	Published
Refereed:	Yes
Identification Number:	10.1109/JQE.2005.844471
URI:	http://eprints.whiterose.ac.uk/id/eprint/732

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