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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 19 — Jul. 1, 2003
  • pp: 3754–3755

Axial irradiance distribution throughout the whole space behind an annular aperture: comments

José A. Ferrari and Alfredo Dubra  »View Author Affiliations


Applied Optics, Vol. 42, Issue 19, pp. 3754-3755 (2003)
http://dx.doi.org/10.1364/AO.42.003754


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Abstract

We comment on the recent paper by Harvey and Krywonos [Appl. Opt. 41, 3790–3795 (2002)], in which approximate irradiance calculations along the axis of a circular aperture illuminated by a plane wave are performed. As the starting point of their calculations, an approximated version (valid for z > λ) of the Rayleigh-Sommerfeld diffraction integral is used. They based their numerical conclusions on a misleading “near field criterion,” which guides the readers to the wrong idea that their calculations are valid even for the very near field behind the aperture. Their ideas are not original; the exact calculations of diffracted fields behind a circular aperture have been known for 40 years [J. Opt. Soc. 51, 1050–1054 (1961)].

© 2003 Optical Society of America

OCIS Codes
(000.0000) General : General
(000.4930) General : Other topics of general interest
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1960) Diffraction and gratings : Diffraction theory

History
Original Manuscript: September 2, 2002
Revised Manuscript: November 18, 2002
Published: July 1, 2003

Citation
José A. Ferrari and Alfredo Dubra, "Axial irradiance distribution throughout the whole space behind an annular aperture: comments," Appl. Opt. 42, 3754-3755 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-19-3754


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