Multispectral single-photon imaging using high efficiency plasmonic metasurface filters
09:50 - 10:10
Peter Connolly, Gerald Buller, Yash Shah and David Cumming The ability to extract multispectral data from single-photon imaging systems is one which is of great interest in many areas of research including remote depth profiling, fluorescence lifetime imaging and astrophysical spectroscopy. We present the first realisation of a mosaic filter array integrated with a single-photon avalanche diode (SPAD) array. The mosaic filter array is fabricated in a single-step process utilising an e-beam written plasmonic metasurface which permits high efficiency transmission. Filters were bonded to two CMOS Si-SPAD arrays and a bespoke algorithm was able to reconstruct colour images of a four colour target using single-photon counting.
