Giant nonlinear optical activity of achiral origin in planar metasurfaces with quadratic and cubic nonlinearities

Shumei Chen, Franziska Zeuner, Martin Weismann, Bernhard Reinike, Guixin Li, Ventsislav Kolev Valev, Kok Wai Cheah, Nicolae Coriolan Panoiu, Thomas Zentgraf, Shuang Zhang

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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.
Original languageEnglish
Pages (from-to)2992-2999
Number of pages8
JournalAdvanced Materials
Volume28
Issue number15
Early online date23 Feb 2016
DOIs
Publication statusPublished - 14 Apr 2016

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    Chen, S., Zeuner, F., Weismann, M., Reinike, B., Li, G., Valev, V. K., Cheah, K. W., Panoiu, N. C., Zentgraf, T., & Zhang, S. (2016). Giant nonlinear optical activity of achiral origin in planar metasurfaces with quadratic and cubic nonlinearities. Advanced Materials, 28(15), 2992-2999. https://doi.org/10.1002/adma.201505640