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In this paper we report on a novel fabrication approach for the manufacture of terahertz waveguides with embedded metal rods. It is anticipated that this type of structure could be used for sub-wavelength imaging or as a method to effectively couple radiation into biological samples.
In this paper we report on the development of THz filters based on sub-wavelength apertures. We demonstrate the applicability of both bulk and surface micromachined approaches to the fabrication of these structures. In particular, a surface micromachined electroplated copper process has been developed which enables the fabrication of coaxial, or annular, apertures surrounded by periodic concentric...
Micromachined metamaterials will be required to provide filters and lenses for the next generation of THz imagers and microscopes. As an example of this emerging technology, we demonstrate here how UV-based surface micromachining can be used to fabricate extremely high aspect ratio pillar arrays. These artificial plasmonic materials act as efficient bandpass filters with a relative transmission of...
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