Compressive Circular Polarization Imaging Spectrometry

A compressive sensing based circular polarization spectral imaging system is proposed in this paper to acquire two dimensional spatial, two-dimensional polarization (the right and left circular polarization), and one spectral information, simultaneously. The combination of a double Amici prism and a Wollaston prism in this system is used to implement the spectral dispersing along two orthogonal, and compared with the traditional single dispersion prism compression spectral imager, the spectral resolution is improved. The light and left circular polarization are separated and extracted by the achromatic quarter wave-plate and a Wollaston prism. The object is spatially encoded using a coded aperture and reconstructed by Two-step Iterative Shrinkage/Thresholding algorithm. The feasibility is verified by the simulation.