期刊
OPTICS EXPRESS
卷 26, 期 11, 页码 14241-14250出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.26.014241
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资金
- US Department of Energy, Office of Basic Energy Science, Division of Materials Science and Engineering (US Department of Energy) [DE-AC02-07CH11358]
- European Research Council under the ERC [320081]
- NSFC [61601166, 61701001, 61701003]
- National Natural Science Fund for Excellent Young Scholars [61722101]
- Universities Natural Science Foundation of Anhui Province [KJ2017ZD51, KJ2017ZD02]
- Thousand Talents Program for Distinguished Young Scholars of China
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. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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