title: Complete trapping of electromagnetic radiation using surface magnetoplasmons.
abstract: Because the dispersion properties of surface magnetoplasmons (SMPs) in a magnetized plasmonic material closely depend on its cladding dielectric, it is possible to completely trap SMPs in a system consisting of a plasmonic material with cladding of a dielectric heterostructure. By using a semiconductor, our finite element simulation (performed using the software COMSOL) shows that terahertz one-way SMPs in such a system can be completely trapped at the interface of the heterostructure and hence, a focused subwavelength-scale hotspot with dramatically enhanced field is generated. Moreover, a one-way SMP pulse in this system can also be completely trapped, and the wave packet can be compressed into a stable hotspot on the subwavelength scale.
authors: Linfang
authors: L
authors: Shen
authors: Zhuoyuan
authors: Z
authors: Wang
authors: Xiaohua
authors: X
authors: Deng
authors: Jin-Jei
authors: JJ
authors: Wu
authors: Tzong-Jer
authors: TJ
authors: Yang