From Event: SPIE Defense + Commercial Sensing, 2023
Modern imaging systems can be enhanced in efficiency, compactness, and range of applications through introduction of multilayer nanopatterned structures for manipulation of light based on its fundamental properties. Metaoptical components can be tailored to respond to these varying electromagnetic properties, but have been mostly explored in single-layer, ultrathin geometries, which limits their capacity for multifunctional behavior. Here we show the design of several pixel-sized scattering structures which sort light efficiently based on its wavelength, polarization state, and spatial mode. The multispectral and polarimetry devices are further fabricated via two-photon lithography and experimentally validated in the mid-infrared.
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Andrei Faraon, Gregory Roberts, Conner Ballew, and Ian Foo, "3D meta-optics for sorting light by wavelength, polarization, and angle of incidence," Proc. SPIE PC12514, Image Sensing Technologies: Materials, Devices, Systems, and Applications X, PC1251404 (Presented at SPIE Defense + Commercial Sensing: May 01, 2023; Published: 15 June 2023); https://doi.org/10.1117/12.2664766.6328917211112.