Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/83244
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Type: Conference paper
Title: Beam deflection lens at terahertz frequencies using a hole lattice metamaterial
Author: Headland, D.
Withayachumnankul, W.
Webb, M.
Abbott, D.
Citation: IRMMW-THz, 2013 38th International Conference on Infrared, Millimeter and Terahertz Waves, Mainz on the Rhine, 1-6 September, 2013: 2 p.
Publisher: IEEE
Publisher Place: USA
Issue Date: 2013
Series/Report no.: International Conference on Infrared Millimeter and Terahertz Waves
ISBN: 9781467347174
ISSN: 2162-2027
2162-2035
Conference Name: International Conference on Infrared, Millimeter and Terahertz Waves (38th : 2013 : Mainz on the Rhine, Germany)
Abstract: The design and simulation of a dielectric lens for beam deflection in the terahertz range is presented. The device consists of a lattice of sub-wavelength holes in a rectangular dielectric slab, and by varying the radii of the holes with respect to position, a gradient index (GRIN) lens can be realised. Beam deflection is achieved by giving the refractive index a ramp-like characteristic. The lens has a flat-profile, and is likely to be more compact than lenses based on geometric optics. A Fresnel lens-like design is used to expand the lens aperture. Additionally, this lens is expected to have lower loss, higher bandwidth, and be less sensitive to polarisation than similar lenses constructed from resonant metamaterials.
Rights: © 2013 IEEE
RMID: 0020133408
DOI: 10.1109/IRMMW-THz.2013.6665703
Appears in Collections:Electrical and Electronic Engineering publications

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