Reflective metasurface optics: bridging light manipulation to computational hyperspectral imaging

Here, I'll cover two applications of nanophotonic metasurfaces in reflection. Firstly, we propose actively modulating the polarization state of lasing emissions at the source using a metasurface-engaged microcavity. This enhances interactions between light and metasurface atoms, resulting in highly pure and controllable polarized lasing emissions. Secondly, we introduce a compact snapshot hyperspectral imaging system integrating meta-optics and small-data deep learning. Operating in the visible window, our system using a single metasurface chip, demonstrates exceptional fidelity in generating hyperspectral data cubes. This integration promises low-profile advanced instruments for scientific studies and laser physics, bridging the gap between metasurfaces and real-world applications.