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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 24 — Dec. 15, 2007
  • pp: 3540–3542

Toward the subdiffraction focusing limit of optical superresolution

V. P. Kalosha and I. Golub  »View Author Affiliations


Optics Letters, Vol. 32, Issue 24, pp. 3540-3542 (2007)
http://dx.doi.org/10.1364/OL.32.003540


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Abstract

A superresolving three-zone plate is applied to a Fresnel diffractive lens. It is shown that for radial incident polarization this combination produces a focal spot approaching superresolution allowed subdiffractive limit of 0.36 λ NA for focusing. For media responsive to longitudinal field component only, our phase engineering scheme results in a focal spot size of 0.368 λ NA . When used with a solid immersion lens, the scheme can generate the smallest focal spot available for passive optics.

© 2007 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(100.6640) Image processing : Superresolution
(110.0180) Imaging systems : Microscopy
(210.0210) Optical data storage : Optical data storage
(220.0220) Optical design and fabrication : Optical design and fabrication
(220.2560) Optical design and fabrication : Propagating methods

ToC Category:
Optical Design and Fabrication

History
Original Manuscript: August 22, 2007
Revised Manuscript: November 8, 2007
Manuscript Accepted: November 8, 2007
Published: December 11, 2007

Citation
V. P. Kalosha and I. Golub, "Toward the subdiffraction focusing limit of optical superresolution," Opt. Lett. 32, 3540-3542 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-24-3540

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