Computer-generated holograms improved by a global iterative coding

Alain Bergeron; Henri H. Arsenault; Jonny Gauvin; Denis J. Gingras

doi:10.1117/12.143908

1 September 1993 Computer-generated holograms improved by a global iterative coding

Alain Bergeron, Henri H. Arsenault, Jonny Gauvin, Denis J. Gingras

Author Affiliations +

Optical Engineering, Vol. 32, Issue 9, (September 1993). https://doi.org/10.1117/12.143908

Abstract

A global iterative coding method for computer-generated holograms (CGH) is introduced. The method is based on the iterative correction of a CGH using standard Lee coding. The correction, i.e., the difference between the desired and the obtained reconstruction, is coded and added to the current CGH. The coding and weighting factors are introduced to control the speed of convergence and the SNR. Advantages lie in low computing time and improvement of the object SNR, the neighborhood SNR, and the background SNR. Reducing the standard deviation of the phase of the reconstructed object also results. A slight improvement of the diffraction efficiency is also observed. The comparison is realized using the Lee interferogram method as a reference. This method is tested on binary and complex gray-level objects. Simulation results and optical reconstruction are also presented.

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Alain Bergeron, Henri H. Arsenault, Jonny Gauvin, and Denis J. Gingras "Computer-generated holograms improved by a global iterative coding," Optical Engineering 32(9), (1 September 1993). https://doi.org/10.1117/12.143908

Published: 1 September 1993

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