PENDULUM ITERATIVE ALGORITHM FOR PHASE RETRIEVAL FROM MODULUS DATA

We present a pendulum iterative algorithm (PIA) to solve the phase ret rieval problem. Computer simulations show that, in general, PIA conver ges faster than previous iterative algorithms in which the moduli of t he object and the Fourier domain are provided. The performance of the PIA is compared with that of the error-reduction algorithm (ERA), the modified error-reduction algorithm (MERA), the input-output algorithm (IOA), and the hybrid IOA/ERA algorithm. We show that the PIA generall y performs better for a binary modulus. In the case of a multilevel mo dulus, the PIA performs comparable to the hybrid IOA/ERA, while better than the others.