PubMed · 17106482
High-aperture beams: comment.
Abstract
Clarifications are provided for the proper choice of the branch of a square-root function that is connected with the singularity on the focal plane occurring in the treatment by Sheppard on 'High-aperture beams' [J. Opt. Soc. Am. A18, 1579 (2001)]. The author's claim that the singularity is nonphysical is disputed.
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S R Seshadri. 2006. High-aperture beams: comment.. https://doi.org/10.1364/josaa.23.003238
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