期刊
OPTICS EXPRESS
卷 30, 期 12, 页码 22161-22177出版社
Optica Publishing Group
DOI: 10.1364/OE.460118
关键词
-
类别
In this study, an augmentation of Surface Plasmon (SP)-enhanced second harmonic generation (SHG) was presented using Au nanoprisms (AuNPs) with interference field enhancement. The SiO2 spacer layer contributed to optical interference and increased the coupling efficiency of pump light with SP polarization, as well as improved the decoupling efficiency of SHG waves from nonlinear polarization. By adjusting the thickness of the SiO2 spacer layer, the intensity of SP-enhanced SHG signals was significantly increased.
We present an augmentation of Surface Plasmon (SP)-enhanced second harmonic generation (SHG) due to interference field enhancement in Au nanoprisms (AuNPs) on SiO2-coated Si substrates. The SiO2 spacer contributed for the optical interference and increased the coupling efficiency of the pump light with the SP polarization as well as a decoupling efficiency of the SHG waves from nonlinear polarization. The intensity of the SP-enhanced SHG signals increased 4.5-fold with respect to the AuNPs on the bare SiO2 substrate by setting the SiO2 spacer layer to the appropriate thickness. The numerical analysis revealed that the optimal SHG conversion was determined by the balance between the degree of the optical interference at the fundamental and SHG wavelengths. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据