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|Title:||Annular pupils, radial polarization, and superresolution||Authors:||Sheppard, C.J.R.
|Issue Date:||1-Aug-2004||Citation:||Sheppard, C.J.R., Choudhury, A. (2004-08-01). Annular pupils, radial polarization, and superresolution. Applied Optics 43 (22) : 4322-4327. ScholarBank@NUS Repository. https://doi.org/10.1364/AO.43.004322||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 X = 488 nm. Use of radially polarized illumination with pupil masks is diskussed. © 2004 Optical Society of America.||Source Title:||Applied Optics||URI:||http://scholarbank.nus.edu.sg/handle/10635/66923||ISSN:||00036935||DOI:||10.1364/AO.43.004322|
|Appears in Collections:||Staff Publications|
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