Recovery of polarimetric parameters from non-imaged laser-speckle

Abstract Propagation of polarized monochromatic light through inhomogeneous media generates a noisy pattern known as a laser speckle. The speckle pattern obscures recovery of the polarimetric parameters (PPs) of the incident light. In this paper, we propose and demonstrate a technique to suppress the speckle and recover the desired PPs. This is implemented by analyzing the speckle pattern with the help of intensity measurement and introducing spatial averaging. In order to suppress the coherent noise and perform complete characterization of the source, we introduce four shot intensity correlation measurements. Utilizing this feature, experimental reconstruction of the PPs obscured by the diffuser is presented for different cases. The effects of the spatial averaging window on the coherent noise suppression and reconstruction of the PPs are also evaluated.