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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 1, Iss. 8 — Aug. 1, 1984
  • pp: 801–808

Three-dimensional intensity distribution near the focus in systems of different Fresnel numbers

Yajun Li and Emil Wolf  »View Author Affiliations


JOSA A, Vol. 1, Issue 8, pp. 801-808 (1984)
http://dx.doi.org/10.1364/JOSAA.1.000801


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Abstract

It was recently shown that, when a converging spherical wave is focused in a diffraction-limited system of sufficiently low Fresnel numbers, the point of maximum intensity does not coincide with the geometrical focus but is located closer to the exit pupil. In the present paper both qualitative and quantitative arguments are presented that elucidate the modifications that the whole three-dimensional structure of the diffracted field undergoes as the Fresnel number is gradually decreased. Contours of equal intensity in the focal region are presented for systems of selected Fresnel numbers, which focus uniform waves.

© 1984 Optical Society of America

Citation
Yajun Li and Emil Wolf, "Three-dimensional intensity distribution near the focus in systems of different Fresnel numbers," J. Opt. Soc. Am. A 1, 801-808 (1984)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-1-8-801

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