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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 22 — Aug. 1, 2004
  • pp: 4322–4327

Annular pupils, radial polarization, and superresolution

Colin J. R. Sheppard and Amarjyoti Choudhury  »View Author Affiliations


Applied Optics, Vol. 43, Issue 22, pp. 4322-4327 (2004)
http://dx.doi.org/10.1364/AO.43.004322


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Abstract

An annular pupil, which can be used to produce a Bessel beam, when combined with radially polarized illumination promises improvements in microscope resolution, increased packing density for optical storage, and finer optical lithography. When combined with a circular detection pupil in confocal microscopy a point-spread function 112 nm wide results (λ = 488 nm). Radially polarized annular illumination of a solid-immersion lens can yield a focal spot smaller than 100 nm for λ = 488 nm. Use of radially polarized illumination with pupil masks is diskussed.

© 2004 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(110.0180) Imaging systems : Microscopy
(210.4770) Optical data storage : Optical recording

History
Original Manuscript: December 22, 2003
Revised Manuscript: April 22, 2004
Published: August 1, 2004

Citation
Colin J. R. Sheppard and Amarjyoti Choudhury, "Annular pupils, radial polarization, and superresolution," Appl. Opt. 43, 4322-4327 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-22-4322

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