Abstract

The Maxwell stress tensor for the field inside a spoof surface plasmon polariton (SSPP) waveguide and the electromagnetic force distribution acting on a dielectric particle are investigated. We show that, for particles made of material with the dielectric function slightly different from that of the medium filling the waveguide, the force distribution is fully described by the SSPP field in the absence of the particle. The spatial profile of the field strongly depends on the relation between the operating frequency and the SSPP resonance frequency. We show that varying the characteristic frequencies introduces a switching effect, when the direction of the force along the waveguide axis changes (from toward the grooves to away from them). We propose a pumping mechanism based on force acting on a small particle inside the SSPP waveguide.

© 2018 Optical Society of America

Compact spoof surface plasmon polaritons waveguide drilled with L-shaped grooves

Lili Tian, Zhenhui Zhang, Jianlong Liu, Keya Zhou, Yang Gao, and Shutian Liu
Opt. Express 24(25) 28693-28703 (2016)

Spoof plasmonic waveguide developed from coplanar stripline for strongly confined terahertz propagation and its application in microwave filters

Ying Jiang Guo, Kai Da Xu, and Xiaohong Tang
Opt. Express 26(8) 10589-10598 (2018)

Terahertz spoof surface-plasmon-polariton subwavelength waveguide

Ying Zhang, Yuehong Xu, Chunxiu Tian, Quan Xu, Xueqian Zhang, Yanfeng Li, Xixiang Zhang, Jiaguang Han, and Weili Zhang
Photon. Res. 6(1) 18-23 (2018)

Efficient conversion from spoof surface plasmon polaritons to radiation mode

Jia-Yuan Yin, Tao Yin, Xiao Yu Du, Yuan Ning, and Li-Xin Guo
Appl. Opt. 60(12) 3374-3379 (2021)

High-efficiency surface plasmonic polariton waveguides with enhanced low-frequency performance in microwave frequencies

Dawei Zhang, Kuang Zhang, Qun Wu, Xumin Ding, and Xuejun Sha
Opt. Express 25(3) 2121-2129 (2017)