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Phase retrieval by aberration compensation in holographic data storage

The phase holographic storage system is different from the traditional object -image corresponding imaging. Because of the particularity of phase, it is not easy to be captured by the traditional detector. Therefore, the Fourier lens is used for Fourier transform to image it on the Fourier plane. The Fourier intensity is detected and the phase is recovered iteratively by using the iterative Fourier transform algorithm. Due to the existence of aberrations, the wavefront phase will be affected and the phase will be distorted.In this paper, we mainly study the influence of spherical aberration on phase transformation. By establishing the light field with wavefront aberration, we study the influence of wavefront aberration on phase recovery and propose the image restoration algorithm for aberration compensation .The feasibility of the theory is proved.