Improvement of Reconstruction Resolution of Computer-generated Hologram Using Phase Freedom

Abstract

In this paper, we describe the simulation results of improving the resolution of the reconstructed image using the phase freedom in the original image in the Fourier transform amplitude hologram. Since the thing that is recorded in the amplitude hologram is the amplitude information, the phase of the original image is possible to arbitrarily specify. Utilizing the phase freedom can reconstruct an image more clearly by reducing the error of reconstructed image. Therefore, we can expected to improve the resolution of the reconstructed image.