Non-iterative phase hologram generation with adaptive weighted constraints for color holographic display

To provide better reconstruction quality, it takes more time for iterative algorithms, especially when multiple holograms need to be computed. A non-iterative method for calculating a phase hologram with adaptive weighted constraints is proposed, which iteratively calculates the optimized phase with a rectangular aperture as the amplitude and multiplies the initial quadratic phase as the initial complex amplitude. Subtraction feedback is introduced to improve the visual effect and avoid the overcompensation problem of division feedback. The proposed method is suitable for generating non-iterative phase holograms with different sizes, and it can further be applied to the calculation of color holograms. It improves computational speed under the premise of ensuring reconstruction quality and can adapt to the needs of different systems with different sizes or different location requirements for holographic reconstruction. Optical experiments also demonstrate the effectiveness of this method.