Broadband resonant terahertz transmission in a composite metal-dielectric structure.
We present a systematic numerical study of a metal-dielectric-metal sandwich plasmonic structure for broadband resonant transmission at terahertz frequencies. The proposed structure consists of periodic slotted metallic arrays on both sides of a thin dielectric substrate and is demonstrated to exhibit a broad passband transmission response. Various design considerations have been investigated to exploit their influence on the transmission passband width and the center resonance frequency. The structure ensures a broadband transmission over a wide range of incident angles.
Han
Jiaguang
J
Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore. phyhanj@nus.edu.sg
Gu
Jianqiang
J
Lu
Xinchao
X
He
Mingxie
M
Xing
Qirong
Q
Zhang
Weili
W