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dc.contributor.authorShi, Junjun
Li, Yang
Kang, Meng
He, Xiaobo
Halas, Naomi J.
Nordlander, Peter
Zhang, Shunping
Xu, Hongxing
dc.date.accessioned 2019-08-16T14:47:27Z
dc.date.available 2019-08-16T14:47:27Z
dc.date.issued 2019
dc.identifier.citation Shi, Junjun, Li, Yang, Kang, Meng, et al.. "Efficient Second Harmonic Generation in a Hybrid Plasmonic Waveguide by Mode Interactions." Nano Letters, 19, no. 6 (2019) American Chemical Society: 3838-3845. https://doi.org/10.1021/acs.nanolett.9b01004.
dc.identifier.urihttps://hdl.handle.net/1911/106257
dc.description.abstract Developing highly efficient nanoscale coherent light sources is essential for advances in technological applications such as integrated photonic circuits, bioimaging, and sensing. An on-chip wavelength convertor based on second harmonic generation (SHG) would be a crucial step toward this goal, but the light-conversion efficiency would be low for small device dimensions. Here we demonstrate strongly enhanced SHG with a high conversion efficiency of 4 × 10–5 W–1 from a hybrid plasmonic waveguide consisting of a CdSe nanowire coupled with a Au film. The strong spatial overlap of the waveguide mode with the nonlinear material and momentum conservation between the incident and reflected modes are the key factors resulting in such high efficiency. The SHG emission angles vary linearly with excitation wavelength, indicating a nonlinear steering of coherent light emission at the subwavelength scale. Our work is promising for the realization of efficient and tunable nonlinear coherent sources and opens new approaches for efficient integrated nonlinear nanophotonic devices.
dc.language.iso eng
dc.publisher American Chemical Society
dc.rights This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Chemical Society.
dc.title Efficient Second Harmonic Generation in a Hybrid Plasmonic Waveguide by Mode Interactions
dc.type Journal article
dc.citation.journalTitle Nano Letters
dc.contributor.org Laboratory for Nanophotonics
dc.subject.keywordhybrid waveguide
momentum conservation
second harmonic generation
semiconductor nanowire
surface plasmon polariton
dc.citation.volumeNumber 19
dc.citation.issueNumber 6
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1021/acs.nanolett.9b01004
dc.identifier.pmid 31125243
dc.type.publication post-print
dc.citation.firstpage 3838
dc.citation.lastpage 3845


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