Demonstration of lateral resolution enhancement by focusing amplitude modulated radially polarized light in a confocal imaging system

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Abstract

Lateral resolution enhancement is demonstrated in a confocal imaging system with amplitude-modulated radially polarized (RP) light at the wavelength Annular pupil fields and optimized amplitude distribution functions can be realized with a spatial light modulator. By comparing images obtained with full and amplitude modulated apertures of RP illuminations using a high numerical aperture (NA = 0.9), spatial resolution of has been achieved experimentally. This result agrees very well with theoretical simulation results and will be helpful in improving performance of the non-fluorescent imaging systems.

Original languageEnglish
Article number045605
Number of pages6
JournalJournal of Optics (United Kingdom)
Volume22
Issue number4
DOIs
Publication statusPublished - 2020

Keywords

  • Confocal imaging
  • Polarization
  • Resolution

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