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Optica Publishing Group
  • Frontiers in Optics 2008/Laser Science XXIV/Plasmonics and Metamaterials/Optical Fabrication and Testing
  • OSA Technical Digest (CD) (Optica Publishing Group, 2008),
  • paper MThC7
  • https://doi.org/10.1364/META_PLAS.2008.MThC7

Role of Cylindrical Surface Plasmons in Generating Non-diffraction Beams by Plasmonic Lens

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Abstract

We investigated the near-field and far-field optical properties of silver and tungsten sub-wavelength annular apertures (SAA) experimentally and performed FDTD simulations. From the results, we found that cylindrical surface plasmons (CSP) not only increase optical transmission, but they also help to focus the sub-wavelength and create a non-diffracting spot.

© 2008 Optical Society of America

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