Optimized iterative algorithm to generate computer-generated holograms based on the intermediate angular-spectrum method

The intermediate angular-spectrum method is an efficient way to calculate computer-generated holograms without zero-padding and cropping operation. In this paper, we present optimized iteration algorithm improve the reconstruction quality in method. quadratic phase multiplied with target image as initial complex amplitude distribution suppresses speckle noise freedom domain introduced plane quality. Numerical simulations optical experiments are performed demonstrate that proposed effective for high-quality reconstruction. It expected could be widely applied holographic field future.