Nonlinear plasmonic metasurfaces represent a promising platform for generating and controlling the multiple degrees of freedom of harmonic waves at the subwavelength scale. Among various functionalities, the amplitude control of the harmonic waves is usually achieved by varying the fundamental frequency and the pumping power. However, these kinds of methods lack the ability to control the energy distributions of the nonlinear waves at different diffraction orders. Here, we report the continuous intensity control of the harmonic waves from the plasmonic metasurfaces through interference paths. The metasurfaces consist of geometric phase controlled gold meta-atoms with threefold rotational symmetry. By controlling the relative phase of two neighboring metasurface paths, the intensity of the diffracted second harmonic waves can be artificially modulated. Our findings suggest that the conventional interference technique represents a powerful route for controlling the radiation of the nonlinear waves from sub-wavelength meta-atoms and may have great applications in developing ultra-compact nonlinear optical sources.
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12 September 2022
Research Article|
September 14 2022
Continuous amplitude control of second harmonic waves from the metasurfaces through interference paths
Special Collection:
Time Modulated Metamaterials
Xuan Liu;
Xuan Liu
(Formal analysis, Investigation, Methodology, Writing – original draft, Writing – review & editing)
1
Department of Materials Science and Engineering, Southern University of Science and Technology
, Shenzhen 518055, China
2
Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology
, Beijing 100124, China
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Yutao Tang;
Yutao Tang
(Formal analysis, Methodology, Writing – review & editing)
1
Department of Materials Science and Engineering, Southern University of Science and Technology
, Shenzhen 518055, China
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Yang Li;
Yang Li
(Formal analysis, Methodology, Writing – review & editing)
1
Department of Materials Science and Engineering, Southern University of Science and Technology
, Shenzhen 518055, China
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Zixian Hu;
Zixian Hu
(Formal analysis, Methodology, Writing – review & editing)
1
Department of Materials Science and Engineering, Southern University of Science and Technology
, Shenzhen 518055, China
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Junhong Deng;
Junhong Deng
(Investigation, Methodology)
1
Department of Materials Science and Engineering, Southern University of Science and Technology
, Shenzhen 518055, China
3
Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology
, Shenzhen 518055, China
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Guixin Li
Guixin Li
a)
(Conceptualization, Formal analysis, Funding acquisition, Investigation, Project administration, Supervision, Writing – original draft)
1
Department of Materials Science and Engineering, Southern University of Science and Technology
, Shenzhen 518055, China
3
Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology
, Shenzhen 518055, China
4
Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices, Southern University of Science and Technology
, Shenzhen 518055, China
a)Author to whom correspondence should be addressed: ligx@sustech.edu.cn
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a)Author to whom correspondence should be addressed: ligx@sustech.edu.cn
Note: This paper is part of the APL Special Collection on Time Modulated Metamaterials.
Appl. Phys. Lett. 121, 111701 (2022)
Article history
Received:
June 23 2022
Accepted:
August 23 2022
Citation
Xuan Liu, Yutao Tang, Yang Li, Zixian Hu, Junhong Deng, Guixin Li; Continuous amplitude control of second harmonic waves from the metasurfaces through interference paths. Appl. Phys. Lett. 12 September 2022; 121 (11): 111701. https://doi.org/10.1063/5.0105386
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