光子上转换
等离子体子
材料科学
光子学
光电子学
极化(电化学)
纳米光子学
光学
兴奋剂
物理
化学
物理化学
作者
Jiahui Xu,Hailong Liu,Hongtao Wang,Yiming Wu,Hao Wang,B. L. Tan,Joel K. W. Yang,Renaud A. L. Vallée,Xiaogang Liu
出处
期刊:Chem
[Elsevier]
日期:2024-02-01
卷期号:10 (2): 544-556
标识
DOI:10.1016/j.chempr.2023.11.007
摘要
Summary
The active control of upconversion polarization in lanthanide-doped nanocrystals through plasmon-photon coupling enables ultracompact nonlinear photonic devices for polarization-encoded optical communication and information processing. However, current plasmonic nanostructures used for this purpose suffer from limited tunability and insufficient sensitivity to polarization, making effective control challenging. Here, we introduce an upconversion plasmonphore platform that overcomes the limitations of isotropic upconversion nanocrystals by utilizing anisotropic gap-plasmon-mode-supported metasurfaces. This platform allows the precise control of plasmon-enhanced excitation polarization and plasmon-coupled emission. When excited with linearly polarized light, the hybrid nanoplatform can switch between four upconversion polarization states, enabling multi-level photonic outputs in parallel or orthogonal configurations. We also demonstrate an information multiplexing scheme using this platform. Our numerical and experimental results not only shed light on nonlinear light-matter interactions and luminescence anisotropy at the nanoscale but also facilitate the development of novel nonlinear polaritonic nanodevices for polarization-based integrated photonics.
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