Abstract
Iterative algorithms represent a classical approach for generating high-quality phase-only hologram. The selection of initial phase and amplitude constraint strategies is crucial in such algorithms. In this paper, an optimized iterative algorithm for generating phase-only hologram is proposed. First, an approximate quadratic phase is employed as the initial phase. Then, an exponential constraint feedback strategy is optimized during the iteration, where an error feedback factor and a constant factor are introduced to gradually improve the quality of the reconstructed image. Simulation results demonstrate that compared with the GS algorithm, WCIA algorithm, and AWGS algorithm, the average PSNR values of the reconstructed images are increased by 55.12 dB, 28.55 dB, and 8.78 dB, respectively. Optical experiments based on a holographic display system further validate the effectiveness of the proposed algorithm. The proposed algorithm is expected to be applied to multi-plane holographic displays.