Imaging quality improvement of ghost imaging in scattering medium based on Hadamard modulated light field

Abstract

The scattering medium in the imaging path can affect the imaging quality of traditional ghost imaging. We propose to substitute a Gaussian light source with a Hadamard modulated light field to reduce correlated noise due to the occurrence of scattering medium and to improve the corresponding signal-to-noise ratio (SNR). In the simulation, scattering media with different intensities are applied on the test arm, and the result shows that Hadamard modulated light, with the particular orthogonality, is superior to Gaussian light. By substituting Gaussian light with Hadamard mudulated light, a ghost image with higher SNR can be obtained under both weak and strong scattering.

Topics & Concepts