1 September 2006 Shaded-mask filtering: novel strategy for improvement of resolution in radial-polarization scanning microscopy
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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.
M.T. Caballero, C. Ibáñez-López, Manuel Martínez-Corral, "Shaded-mask filtering: novel strategy for improvement of resolution in radial-polarization scanning microscopy," Optical Engineering 45(9), 098003 (1 September 2006). https://doi.org/10.1117/1.2345190
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