Micromachined Devices for Use in Terahertz Applications

Wood, David, Chamberlain, Martyn, Baragwanath, Adam, Dodd, Linzi, Hill, Carlo and Gallant, Andrew J. (2013) Micromachined Devices for Use in Terahertz Applications. Advances in Science and Technology, 81. pp. 20-27. ISSN 1662-0356

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Abstract

Here we present results from key aspects of our interest in using micromachined devices in the THz region. First, our early work on making filters from rods of gold-coated SU8 is described. Pass (up to 97%) and stop bands can be observed which are theoretically underpinned by both FDTD and complex band structure simulations. Second, there is a discussion of how THz radiation passes through two-dimensional periodic arrays of subwavelength apertures. In particular, the geometry of the arrays has been studied with time-domain spectroscopy. A time-of-flight model is presented which can be used to provide insight into the operation of these arrays and has implications for the optimum design of THz plasmonic sensors. Finally, we report the THz ‘super’ extraordinary transmission properties of an optimised hybrid subwavelength aperture array, surrounded by subwavelength grooves.

Item Type:	Article
Uncontrolled Keywords:	Filter, Micro Machining, Plasmonics, THz
Subjects:	H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Paul Burns
Date Deposited:	29 Mar 2018 15:08
Last Modified:	11 Oct 2019 21:18
URI:	http://nrl.northumbria.ac.uk/id/eprint/33892

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