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research article

Remote Dual-Cavity Enhanced Second Harmonic Generation in a Hybrid Plasmonic Waveguide

Shi, Junjun
•
He, Xiaobo
•
Chen, Wen  
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January 13, 2022
Nano Letters

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-Perot (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 x 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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Type
research article
DOI
10.1021/acs.nanolett.1c03824
Web of Science ID

WOS:000745139500001

Author(s)
Shi, Junjun
•
He, Xiaobo
•
Chen, Wen  
•
Li, Yang
•
Kang, Meng
•
Cai, Yangjian
•
Xu, Hongxing
Date Issued

2022-01-13

Publisher

AMER CHEMICAL SOC

Published in
Nano Letters
Subjects

Chemistry, Multidisciplinary

•

Chemistry, Physical

•

Nanoscience & Nanotechnology

•

Materials Science, Multidisciplinary

•

Physics, Applied

•

Physics, Condensed Matter

•

Chemistry

•

Science & Technology - Other Topics

•

Materials Science

•

Physics

•

plasmonics

•

second harmonic generation

•

fabry-perot cavities

•

multiple resonances

•

integrated photonics devices

•

surface-plasmon

•

nanostructures

•

orientations

•

principles

•

nanowires

Peer reviewed

REVIEWED

Written at

EPFL

Available on Infoscience
January 31, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/184993
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