Confocal microscopy with a radially polarized focused beam

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Abstract

Rigorous vectorial focusing theory is used to study the imaging of small adjacent particles with a confocal laser scanning system. We consider radially polarized illumination with an optimized amplitude distribution and an annular lens to obtain a narrower distribution of the longitudinal component of the field in focus. A polarization convertor at the detector side is added to transform radial polarization to linear polarization in order to make the signal detectable with a single mode fiber.

Original languageEnglish
Pages (from-to)29600-29613
JournalOptics Express
Volume26
Issue number23
DOIs
Publication statusPublished - 2018

Keywords

  • OA-Fund TU Delft

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