2023
DOI: 10.1364/opticaopen.21929904
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Experimental characterisation of a planar phase-engineered metamaterial lenslet for millimetre astronomy

Abstract: To unveil presently inscrutable details of the origins of our Universe imprinted in the Cosmic Microwave Background, future experiments in the millimetre and sub-millimetre range are focusing on the detection of fine features which necessitate large and sensitive detector arrays to enable multichroic mapping of the sky. Currently, various approaches for coupling light to such detectors are under investigation, namely: coherently summed hierarchical arrays, platelet horns and antenna coupled planar lenslets. Th… Show more

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