@article{a467295113824d07bb060abea95f898e,
title = "Giant Nonlinear Optical Activity of Achiral Origin in Planar Metasurfaces with Quadratic and Cubic Nonlinearities",
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.",
keywords = "circular dichroism, metasurfaces, nonlinear optics, plasmonic",
author = "Shumei Chen and Franziska Zeuner and Martin Weismann and Bernhard Reineke and Guixin Li and Valev, \{Ventsislav Kolev\} and Cheah, \{Kok Wai\} and Panoiu, \{Nicolae Coriolan\} and Thomas Zentgraf and Shuang Zhang",
note = "Funding Information: S.C., F.Z., and M.W. contributed equally to this work. This work was financially supported by EPSRC (Grant No. EP/J018473/1), Leverhulme (Grant No. RPG-2012-674), and the Deutsche Forschungsgemeinschaft (Grant Nos. TRR142/A05 and ZE953/7-1). M.W. and N.C.P. acknowledge support from European Research Council/ERC Grant Agreement No. ERC-2014-CoG-648328. V.K.V. acknowledges contribution from The Royal Society through a University Research Fellowship. K.W. would like to thank the support from Research Grant Council of Hong Kong under Project AoE/P-02/12. S.Z. acknowledges financial support from the NSFC (Grant No. 61328503).",
year = "2016",
month = apr,
day = "20",
doi = "10.1002/adma.201505640",
language = "English",
volume = "28",
pages = "2992--2999",
journal = "Advanced Materials",
issn = "0935-9648",
publisher = "Wiley-Blackwell",
number = "15",
}