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Fig. 2

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Detector chip and experimental setup. (a) A microscope image of the detector chip prior to mounting of the lens array, showing the 27 different detectors and the four different geometries used, which vary in THz line length. We note that the centre pixel is one of the designs with the shortest THz line length. (b) Photograph of the detector assembly after lens array and spacer wafer mounting. (c) Cross-sectional CAD render of the experimental setup. The upgrades with respect to the setup of de Visser et al. (2014) are highlighted in the insert.

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