%0 Journal Article
%@ 1094-4087
%A Fang, M
%A Niu, K
%A Huang, Z
%A Sha, WEI
%A Wu, X
%A Koschny, T
%A Soukoulis, CM
%D 2018
%F discovery:10056670
%I OPTICAL SOC AMER
%J Optics Express
%K Metamaterials, Nonlinear optics, Computational electromagnetic methods
%N 11
%P 14241-14250
%T Investigation of broadband terahertz generation from metasurface
%U https://discovery.ucl.ac.uk/id/eprint/10056670/
%V 26
%X The nonlinear metamaterials have been shown to provide nonlinear properties with high nonlinear conversion efficiency and in a myriad of light manipulation. Here we study terahertz generation from nonlinear metasurface consisting of single layer nanoscale split-ring resonator array. The terahertz generation due to optical rectification by the second-order nonlinearity of the split-ring resonator is investigated by a time-domain implementation of the hydrodynamic model for electron dynamics in metal. The results show that the nonlinear metasurface enables us to generate broadband terahertz radiation and free from quasi-phase-matching conditions. The proposed scheme provides a new concept of broadband THz source and designing nonlinear plasmonic metamaterials.
%Z This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.