Abstract

Most algorithms for phase retrieval from two intensities are based on the iterative method first introduced by Gerchberg and Saxton [1] for recovering the phase of a field from aperture and diffraction plane intensities. Misell [2] generalized this algorithm to be used with intensities on any two planes related by a unitary operator, and later Wang et. al. [3] extended the iterative algorithm to the case of non-unitary operators. Non-iterative methods based on zero-location in the complex plane [4] and use of an exponential filter [5] as well as “tree pruning” methods [6] have also been proposed.

© 1992 Optical Society of America