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Type: Journal article
Title: Tutorial: Terahertz beamforming, from concepts to realizations
Author: Headland, D.
Monnai, Y.
Abbott, D.
Fumeaux, C.
Withayachumnankul, W.
Citation: APL Photonics, 2018; 3(5):1-32
Publisher: American Institute of Physics
Issue Date: 2018
ISSN: 2378-0967
Statement of
Daniel Headland, Yasuaki Monnai, Derek Abbott, Christophe Fumeaux, and Withawat Withayachumnankul
Abstract: The terahertz range possesses significant untapped potential for applications including high-volume wireless communications, noninvasive medical imaging, sensing, and safe security screening. However, due to the unique characteristics and constraints of terahertz waves, the vast majority of these applications are entirely dependent upon the availability of beam control techniques. Thus, the development of advanced terahertz-range beam control techniques yields a range of useful and unparalleled applications. This article provides an overview and tutorial on terahertz beam control. The underlying principles of wavefront engineering include array antenna theory and diffraction optics, which are drawn from the neighboring microwave and optical regimes, respectively. As both principles are applicable across the electromagnetic spectrum, they are reconciled in this overview. This provides a useful foundation for investigations into beam control in the terahertz range, which lies between microwaves and infrared light. Thereafter, noteworthy experimental demonstrations of beam control in the terahertz range are discussed, and these include geometric optics, phased array devices, leaky-wave antennas, reflectarrays, and transmitarrays. These techniques are compared and contrasted for their suitability in applications of terahertz waves.
Rights: All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (
DOI: 10.1063/1.5011063
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Electrical and Electronic Engineering publications

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