Abstract
A broadband snapshot full-Stokes polarizing-spectral-imaging (PSI) is achieved by reciprocally designing a metal–insulator-metal metasurface with anisotropic detour phase to generate polarizing-spectrally dependent dot-array-shaped point-spread-function (PSF), and the high dimensional information can be retrieved from one snapshot intensity image through the post-computation. It overcomes the restriction on the wavelength selection in principle faced by the propagating phase modulation scheme used in the previous metasurface-based PSI approaches, and brings advantages including compact configuration, fast acquisition and broadband operation. The dependence of the engineered PSF on the polarizing-spectral channel across 100 nm in the visible band is experimentally verified and analyzed, consistent well with the simulation. Reconstruction results for the high dimensional imaging are presented in simulations and experiments based on the established model.
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