Nonlinear Light Amplification Governed by Structural Asymmetry,Advanced Optical Materials

当前位置： X-MOL 学术 › Adv. Opt. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Nonlinear Light Amplification Governed by Structural Asymmetry
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2022-03-23 , DOI: 10.1002/adom.202102215
Shaoxin Shen ₁ , Renxian Gao ₂ , Guoya Sun ₂ , Zhilin Yang ₂

Affiliation

Maneuvering the structural asymmetry in metasurfaces plays an essential role in nonlinear nanophotonics, particularly in sub-wavelength-scale harmonic generation. Here, a highly efficient and reproducible plasmon-enhanced second-harmonic generation platform for exploring these quantitative contributions of structural asymmetries to the amplification of inherently weak nonlinear responses is experimentally designed. It is discovered that such structural asymmetries can not only quantitatively alter the well-characterized surface susceptibility, but also contribute to the spectral matching and the spatially symmetrical transition of optical resonant modes in plasmon-enhanced nonlinear polarizations. Furthermore, this study strives to establish a theoretical model to quantify these structural asymmetry-induced modifications, indicating the consistency with proposed experimental results. These studies may offer a strategy to the design of efficient nonlinear optical nanodevices with extending applications.

中文翻译：

结构不对称控制的非线性光放大

操纵超表面中的结构不对称性在非线性纳米光子学中起着至关重要的作用，特别是在亚波长尺度谐波产生中。在这里，实验设计了一种高效且可重复的等离子体增强二次谐波生成平台，用于探索结构不对称对放大固有弱非线性响应的这些定量贡献。发现这种结构不对称不仅可以定量地改变表征良好的表面磁化率，而且还有助于等离子体增强非线性偏振中光学共振模式的光谱匹配和空间对称转变。此外，本研究致力于建立一个理论模型来量化这些结构不对称引起的修改，表明与提议的实验结果的一致性。这些研究可能为设计具有扩展应用的高效非线性光学纳米器件提供一种策略。

更新日期：2022-03-23

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11