Mode coupling based on split-ring resonators and waveguide and second harmonic enhancement

被引：1

作者：

Chen, Hao ^{[1
]}

Zhang, Menglai ^{[1
]}

Qin, Zhaofu ^{[1
]}

Hu, Taozheng ^{[1
]}

Chen, Zhuo ^{[1
,2
]}

Wang, Zhenlin ^{[1
,2
]}

机构：

[1] Nanjing Univ, Sch Phys & Natl Lab Solid State Microstruct, 22 Hankou Rd, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, 22 Hankou Rd, Nanjing 210093, Peoples R China

来源：

OPTICAL MATERIALS EXPRESS | 2022年 / 12卷 / 03期

基金：

中国国家自然科学基金;

关键词：

GENERATION; RESONANCES;

D O I：

10.1364/OME.451195

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nonlinear optical processes are promising for many applications, and recently great attention has been paid to improve the nonlinear efficiency of plasmonic metasurfaces. Here, we propose a hybrid structure consisting of a gold split-ring resonator (SRR) based nonlinear metasurface on top of a dielectric waveguide layer. By adjusting the periodicity of the SRR array, we demonstrate that the coupling between the magnetic surface plasmons (MSPs) of the SRRs and the waveguide modes could greatly enhance the second harmonic generation (SHG) intensity. Compared with the conventional SRR arrays, the hybrid structures could provide an extra enhancement in the SHG intensity of more than one order of magnitude. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：1263 / 1270

页数：8

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