Zhou Renlong, Chen Xiaoshuang, Xiao Yingyi, Zhou Bingju, Wu Lingxi, Liu Xiaojuan, Gao Yongyi, Zhan Jie
School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201, China.
National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.
ScientificWorldJournal. 2014 Feb 16;2014:284929. doi: 10.1155/2014/284929. eCollection 2014.
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.
在许多论文中，我们研究了通过三角形晶格穿孔金膜而非方形晶格的激发二阶非线性。在表面等离子体共振效应的激发下，非中心对称的裂环谐振器阵列中存在二阶非线性。获得了通过三角形晶格穿孔金膜的基频波反射。我们还通过光谱描述了二阶非线性光学过程中的二次谐波转换效率。此外，计算了金膜区域上方基频的电场分布。光通过这些孔传播导致二阶非线性增强，包括二次谐波产生以及和（差）频产生。
