Experimental confirmation of miniature spiral plasmonic lens as a circular polarization analyzer.

@article{Chen2010ExperimentalCO,
  title={Experimental confirmation of miniature spiral plasmonic lens as a circular polarization analyzer.},
  author={Weibin Chen and Don C. Abeysinghe and Robert Leonard Nelson and Qiwen Zhan},
  journal={Nano letters},
  year={2010},
  volume={10 6},
  pages={2075-9}
}
A spiral plasmonic lens can focus circular polarization of a given handedness while simultaneously defocus the circular polarization of the opposite chirality, which may be used as a miniature circular polarization analyzer. In this letter, we experimentally investigated the plasmonic focusing properties of the spiral lens using a collection mode near-field scanning optical microscope. A single Archimedes' spiral slot with a single turn was etched through gold thin film as a spiral plasmonic… CONTINUE READING
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