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Proceedings Paper

Distinctions Between Undersampling And Aliasing Errors In Numerical Evaluation Of Diffraction Patterns
Author(s): George N. Lawrence; Calvin C. Barnard
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Paper Abstract

Calculation of small angle, near field Fresnel diffraction patterns of a propagating light beam is a common task in the system analysis of various high energy laser systems. The basic mathematical principles which cause spatial domain aliasing and undersampling errors are well understood. However, the work to develop these fundamental principles into concise expressions of intensity errors has not been addressed previously . Based on new intensity error estimates of aliasing and rough estimates of undersampling errors, we attempt to clarify the different nature of these two phenomena by illustrating their different functional dependencies. Further, we argue that in most cases of practical interest, aliasing errors completely dominate undersampling errors.

Paper Details

Date Published: 30 December 1981
PDF: 6 pages
Proc. SPIE 0288, Los Alamos Conf on Optics '81, (30 December 1981); doi: 10.1117/12.932093
Show Author Affiliations
George N. Lawrence, The BDM Corporation (United States)
Calvin C. Barnard, The BDM Corporation (United States)

Published in SPIE Proceedings Vol. 0288:
Los Alamos Conf on Optics '81
Donald H. Liebenberg, Editor(s)

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