Excitation and modulation of long-range surface plasmons based on InSb multilayer structure

被引：0
作者：
Zhang, Guizhi [1 ]
Meng, Yanzi [1 ]
Wang, Shuai [1 ]
Lu, Jie [1 ]
Yue, Jing [1 ]
Xia, Shengxuan [1 ]
Wang, Lingling [1 ]
Zhai, Xiang [1 ]
机构：
[1] Hunan Univ, Sch Phys & Elect, Key Lab Micronano Optoelect Devices Minist Educ, Changsha 411082, Peoples R China
来源：
PHYSICS LETTERS A | 2023年 / 481卷
关键词：
Purcell effect; Surface plasmon; Waveguide; Mode hybridization; Coupling efficiency; WAVE-GUIDES; ABSORPTION; EMISSION;
D O I：
10.1016/j.physleta.2023.128989
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We proposed an Ag-based multilayer InSb and SiO2 system in the terahertz region. Based on the surface plasmon polariton (SPP) interaction among each interface, the spontaneous emission of a dipole in multilayer systems supporting SPP and waveguide modes is theoretically studied. It found that the coupling efficiency of long-range SPP (LRSPP) is about 78% with a propagation length of up to 28.25 mm. The thermally tunable characteristics of InSb enable LRSPP devices to be realized with adjustable coupling efficiency. Our work could be applied as a future guide for integrated plasmonic device design. & COPY; 2023 Elsevier B.V. All rights reserved.
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页数：6
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