Enhancing second harmonic generation of monolayer WS2 with edge plasmon
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Published:2023-11-10
Issue:
Volume:
Page:
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ISSN:0218-8635
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Container-title:Journal of Nonlinear Optical Physics & Materials
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language:en
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Short-container-title:J. Nonlinear Optic. Phys. Mat.
Author:
Li Yuanyuan1ORCID,
Wang Min1,
Ni Bo1,
Xie Jiaxin1,
Wang Tianjie1,
Sun Yu1,
Wang Rui2ORCID,
Chang Jianhua1ORCID,
Cui Qiannan2ORCID
Affiliation:
1. School of Electronics and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, P. R. China
2. State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China
Abstract
Transition-metal dichalcogenide (TMD) monolayers possess large second-order nonlinear susceptibility and have shown great potentials in on-chip nonlinear optical devices. However, the thickness of TMD monolayers is less than 1[Formula: see text]nm, resulting in a rather low second harmonic generation (SHG) efficiency. In this paper, we propose a physical scheme of enhancing SHG of TMD monolayers with edge plasmon. As a proof of concept demonstration, we constructed a hexagonal gold nanoplates/monolayer WS2 heterostructure with high interface quality. By performing SHG measurements, we show that SHG was enhanced by a factor of about 60. Our results set a foundation for on-chip nonlinear optical applications with TMD monolayers.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Jiangsu Province
Natural Science Research of Jiangsu Higher Education Institutions of China
Publisher
World Scientific Pub Co Pte Ltd
Subject
Physics and Astronomy (miscellaneous),Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
1 articles.
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