A broadband, background-free quarter-wave plate based on plasmonic metasurfaces.
basic_science · Level V
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- Record sourced from PubMed, PMID 23130979.
- Also identified by DOI 10.1021/nl303445u.
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Abstract
We demonstrate optically thin quarter-wave plates built with metasurfaces that generate high-quality circularly polarized light over a broad wavelength range for arbitrary orientation of the incident linear polarization. The metasurface consists of an array of plasmonic antennas with spatially varying phase and polarization responses. Experimentally demonstrated quarter-wave plates generate light with a high degree of circular polarization (>0.97) from λ = 5 to 12 μm, representing a major advance in performance compared to previously reported plasmonics-based wave plates.
Medical subject headings
- Refractometry
- Surface Plasmon Resonance