基于空间部分相干光的全息图产生与显示

Based on the partial coherent light theory, the equivalent expression of partially coherent light in space is dervied, and an algorithm for generating holograms is proposed. The corresponding mathematical model of the expression is built. According to the optical properties of Fraunhofer diffraction, the mathematical model is combined with the angle spectrum theory and the iterative algorithm to propose a feasible algorithm for generating a computational hologram. On this basis, The speckle was further reduced by combining the time average theory. The image quality was evaluated by the speckle contrast ratio and peak signal-to-noise ratio. The theoretical results show that the hologram reconstructed image produced by this algorithm can reduce the speckle contrast by 21.7%.