Bio-inspired color-polarization imager for real-time in situ imaging

摘要: Nature has a large repertoire of animals that take advantage naturally abundant polarization phenomena. Among them, the mantis shrimp possesses one most advanced and elegant visual systems nature developed, capable high sensitivity hyperspectral imaging. Here, we demonstrate by shifting design paradigm away from conventional paths adopted in imaging vision sensor fields instead functionally mimicking system shrimp, have developed single-chip, low-power, high-resolution color-polarization system. Our bio-inspired imager captures co-registered color information real time with resolution monolithically integrating nanowire filters vertically stacked photodetectors. These photodetectors capture three different spectral channels per pixel exploiting wavelength-dependent depth absorption photons. comprises 1280 720 pixels dynamic range 62 dB maximum signal-to-noise ratio 48 dB. The quantum efficiency is above 30% over entire visible spectrum, while achieving extinction ratios ∼40 on each channel. This technology enabling underwater studies marine species, which exploit both information, as well applications biomedical fields.