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In both Fourier Transform Spectroscopy and Time-Domain Spectroscopy in the THz frequency region, many of the measurements are performed on samples of a single material and given known thickness to either characterize a material sample, characterize a reference substrate of material for a subsequent measurement, or where superior data on that sample exists, calibrate the system accurately. In this...
By using existing metal mesh technology we propose a new lens design that behaves in a similar way to a Wollaston Prism. That is, a device that separates out the two linear polarised states of the incident field and then focuses them separately on same focal plane. The design is an evolution of an existing GRIN lens based on the same technology. The proposed lens design has a diameter of 75mm while...
A flat lens-filter (or lenster) has recently been produced using capacitive metal-mesh structures on polypropylene substrate. The prototype was designed using a combination of a transmission line method(TLM) and HFSS. Its performance was measured and compared to a standard polypropylene lens. We propose to perform further measurements, focusing on the phase, to give a deeper understanding on how the...
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