等离子体子
二次谐波产生
纳米光子学
光电子学
波导管
材料科学
光子学
表面等离子共振
共振(粒子物理)
谐振器
光学
纳米技术
物理
激光器
纳米颗粒
粒子物理学
作者
Junjun Shi,Xiaobo He,Wen Chen,Yang Li,Kun Meng,Yangjian Cai,Hongxing Xu
出处
期刊:Nano Letters
[American Chemical Society]
日期:2022-01-13
卷期号:22 (2): 688-694
被引量:13
标识
DOI:10.1021/acs.nanolett.1c03824
摘要
On-chip nanoscale optical platforms capable of efficient second harmonic generation (SHG) are highly desired for optical sensing, subwavelength coherent sources, and quantum photonic devices. Here, we develop a remotely excited dual cavity resonance scheme to achieve significantly enhanced SHG in a CdSe nanobelt on Au film hybrid waveguide system. The SHG emission with superior efficiency originates from counter-propagating plasmonic modes interference in a horizontal Fabry-Pérot (FP) cavity enabled by remote excitation of propagating surface plasmons, which is further enhanced through a vertical FP cavity. With this effective cooperation of hybrid plasmon modes and FP cavity modes, 2 orders of magnitude enhancement of the conversion efficiency (3.5 × 10-4 W-1) is achieved compared to the off-resonance case. Our design provides new insight into the development of a multifunctional hybrid plasmonic device toward on-chip nonlinear nanophotonic applications.
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