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Applied Optics

Applied Optics


  • Vol. 41, Iss. 19 — Jul. 1, 2002
  • pp: 3790–3795

Axial irradiance distribution throughout the whole space behind an annular aperture

James E. Harvey and Andrey Krywonos  »View Author Affiliations

Applied Optics, Vol. 41, Issue 19, pp. 3790-3795 (2002)

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In many photonics and fiber-optics applications, the irradiance distribution in the very near field (z/ D < 0.25) behind a circular or annular aperture is of interest. We present the results of detailed calculations of the irradiance distribution throughout the entire space behind an annular aperture. Included as a special case of the annular aperture is the circular aperture and the opaque circular disk. A log–log plot over many orders of magnitude in axial distance provides particular insight. The behavior throughout the Fresnel and Fraunhofer region is well known; however, we pay particular attention to the behavior in the near field. A variety of subtle effects in the near field are presented and discussed.

© 2002 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1220) Diffraction and gratings : Apertures
(050.1960) Diffraction and gratings : Diffraction theory
(260.0260) Physical optics : Physical optics

Original Manuscript: November 5, 2001
Revised Manuscript: March 4, 2002
Published: July 1, 2002

James E. Harvey and Andrey Krywonos, "Axial irradiance distribution throughout the whole space behind an annular aperture," Appl. Opt. 41, 3790-3795 (2002)

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