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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 32, Iss. 5 — Mar. 1, 2007
  • pp: 527–529

Axial field shaping under high-numerical-aperture focusing

Toufic G. Jabbour and Stephen M. Kuebler  »View Author Affiliations


Optics Letters, Vol. 32, Issue 5, pp. 527-529 (2007)
http://dx.doi.org/10.1364/OL.32.000527


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Abstract

Kant reported [ J. Mod. Optics 47, 905 (2000) ] a formulation for solving the inverse problem of vector diffraction, which accurately models high-NA focusing. Here, Kant’s formulation is adapted to the method of generalized projections to obtain an algorithm for designing diffractive optical elements (DOEs) that reshape the axial point-spread function (PSF). The algorithm is applied to design a binary phase-only DOE that superresolves the axial PSF with controlled increase in axial sidelobes. An 11-zone DOE is identified that axially narrows the PSF central lobe by 29% while maintaining the sidelobe intensity at or below 52% of the peak intensity. This DOE could improve the resolution achievable in several applications without significantly complicating the optical system.

© 2007 Optical Society of America

OCIS Codes
(050.1220) Diffraction and gratings : Apertures
(100.6640) Image processing : Superresolution
(170.5810) Medical optics and biotechnology : Scanning microscopy

ToC Category:
Optical Design and Fabrication

History
Original Manuscript: October 16, 2006
Manuscript Accepted: November 21, 2006
Published: February 2, 2007

Virtual Issues
Vol. 2, Iss. 4 Virtual Journal for Biomedical Optics

Citation
Toufic G. Jabbour and Stephen M. Kuebler, "Axial field shaping under high-numerical-aperture focusing," Opt. Lett. 32, 527-529 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-5-527

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