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Optical Engineering

Shaded-mask filtering: novel strategy for improvement of resolution in radial-polarization scanning microscopy
Author(s): M.T. Caballero; C. Ibáñez-López; Manuel Martínez-Corral
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Paper Abstract

Radially polarized illumination produces, in combination with annular pupil filtering, the sharpest focal spot. However, the enhanced sidelobes produce an effective deterioration of spatial resolution. This study shows that if one substitutes the annular filter by one, adequately designed, shaded-mask filter, the sidelobes' strength is strongly reduced, and an important, effective improvement of resolution is achieved.

Paper Details

Date Published: 1 September 2006
PDF: 7 pages
Opt. Eng. 45(9) 098003 doi: 10.1117/1.2345190
Published in: Optical Engineering Volume 45, Issue 9
Show Author Affiliations
M.T. Caballero, Univ. de Alicante (Spain)
C. Ibáñez-López, Univ. de València (Spain)
Manuel Martínez-Corral, Univ. de València (Spain)

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