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Time-gated Raman spectroscopy using a 3D-stacked back-side illuminated CMOS SPAD array

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Atlas is a 128 × 128-pixel array, consisting of 512 × 512 back-side illuminated (BSI) single photon avalanche diodes (SPADs) in 3D-stacked 65/40 nm CMOS technology. On-pixel auto-correlator and single photon counting capabilities have been previously describ... ...