Metasurface device for detecting optical chirality
US12146826B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Nov 8, 2020 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Mar 1, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/216
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting optical chirality includes a metasurface composed of a biperiodic array of nanodisks in the form of a checkerboard array [300], where the nanodisks have diameters d±Δ/2 such that adjacent nanodisks [302, 304] have diameters that differ by an offset Δ. The nanodisks are composed of a dielectric material that is transparent and has a refractive index greater than 2 at a predetermined operational ultraviolet wavelength. The nanodisks have a width-to-height aspect ratio d/h tuned to produce spectral overlap of electric dipole and magnetic dipole modes of incident circularly polarized ultraviolet light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.