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Optical Engineering

Multispectra method for error reduction of the quantized Fourier modulus in the iterative Fourier transform algorithms used for phase retrieval
Author(s): Shiyuan Yang; Hiroaki Takajo
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Paper Abstract

A multispectra method is proposed for the error reduction of the quantized Fourier modulus in the iterative Fourier transform algorithms used for phase retrieval. The Fourier modulus is usually obtained by measuring the Fourier intensity with a digital device, thus the quantization error caused in the measurements of Fourier intensity leads to the error of the reconstructed object when iterative Fourier transform algorithms are used. The idea of the multispectra method uses several Fourier intensity distributions for various measuring ranges to generate a Fourier intensity distribution with low-quantization error. The error reduction of Fourier intensity with the multispectra method connects to the improvement of the phase retrieval with the iterative Fourier transform algorithms. Simulations are performed to demonstrate the effect of the multispectra method for phase retrieval with the iterative hybrid input-output algorithm.

Paper Details

Date Published: 1 March 2004
PDF: 5 pages
Opt. Eng. 43(3) doi: 10.1117/1.1640637
Published in: Optical Engineering Volume 43, Issue 3
Show Author Affiliations
Shiyuan Yang, Kyushu Institute of Technology (Japan)
Hiroaki Takajo, Kyushu Institute of Technology (Japan)


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