title: Second-order nonlinearity in triangular lattice perforated gold film due to surface plasmas resonance.
abstract: We have studied the excitation second-order nonlinearity through a triangular lattice perforated gold film instead of square lattice in many papers. Under the excitation of surface plasmas resonance effect, the second order nonlinearity exists in the noncentrosymmetric split-ring resonators arrays. Reflection of fundamental frequency wave through a triangular lattice perforated gold film is obtained. We also described the second harmonic conversion efficiencies in the second order nonlinear optical process with the spectra. Moreover, the electric field distributions of fundamental frequency above the gold film region are calculated. The light propagation through the holes results in the enhancement of the second order nonlinearity including second harmonic generation as well as the sum (difference) frequency generation.
authors.affiliation: School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China.
authors.forename: Renlong
authors.identifier: 0000-0002-1251-8910
authors.initials: R
authors.lastname: Zhou
authors.affiliation: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.
authors.forename: Xiaoshuang
authors.initials: X
authors.lastname: Chen
authors.affiliation: School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China.
authors.forename: Yingyi
authors.initials: Y
authors.lastname: Xiao
authors.affiliation: School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China.
authors.forename: Bingju
authors.initials: B
authors.lastname: Zhou
authors.affiliation: School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China.
authors.forename: Lingxi
authors.initials: L
authors.lastname: Wu
authors.affiliation: School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China.
authors.forename: Xiaojuan
authors.initials: X
authors.lastname: Liu
authors.affiliation: School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China.
authors.forename: Yongyi
authors.initials: Y
authors.lastname: Gao
authors.affiliation: School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhan
mesh_terms: D003198:Computer Simulation; D006046:Gold / Q000737:chemistry*; D008027:Light; D008567:Membranes, Artificial; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D008567:Membranes, Artificial; D006046:Gold