Giant Nonlinear Optical Activity of Achiral Origin in Planar Metasurfaces with Quadratic and Cubic Nonlinearities.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 26914148.
- Also identified by DOI 10.1002/adma.201505640.
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Abstract
3D chirality is shown to be unnecessary for introducing strong circular dichroism for harmonic generations. Specifically, near-unity circular dichroism for both second-harmonic generation and third-harmonic generations is demonstrated on suitably designed ultrathin plasmonic metasurfaces with only 2D planar chirality. The study opens up new routes for designing chip-type biosensing platform, which may allow for highly sensitive detection of bio- and chemical molecules with weak chirality.
Medical subject headings
- Nanostructures
- Nonlinear Dynamics
- Optical Phenomena