%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.
%A M Fang
%A K Niu
%A Z Huang
%A WEI Sha
%A X Wu
%A T Koschny
%A CM Soukoulis
%T Investigation of broadband terahertz generation from metasurface
%O This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
%D 2018
%L discovery10056670
%V 26
%K Metamaterials, Nonlinear optics, Computational electromagnetic methods
%J Optics Express
%N 11
%I OPTICAL SOC AMER
%P 14241-14250