Snap-Shot Hyperspectral Imaging Enabled by Metasurface.
basic_science · Level V
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- Record sourced from PubMed, PMID 41586810.
- Also identified by DOI 10.1021/acs.nanolett.5c04868.
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Abstract
Hyperspectral imaging provides detailed spectral information beyond the capabilities of traditional color imaging, with a far-reaching impact in precision agriculture, environmental monitoring, and medical imaging. However, most existing systems based on tunable filters, line-scan spectrometry, and multiapertures are limited by stringent trade-offs between imaging speeds, spectral and spatial resolutions, and low light efficiency. Here, we demonstrate a snapshot hyperspectral imaging system featuring a metasurface code mask and compressed sensing reconstruction. Our proof-of-concept system achieves a spatial resolution of 200 × 140 pixels and 21 spectral bands that span the 480-680 nm wavelength range with a photon efficiency of 39%. This work highlights the potential of metasurface-enabled hyperspectral imaging systems, paving the way for ultracompact, high-performance hyperspectral cameras.