Open AccessTunable terahertz transmission properties of aligned Ni-nanowire arrays
Author(s) -
Wenfeng Xiang,
Yi Liu,
Minghao Hu,
Haizhong Guo
Publication year - 2017
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.030606
Subject(s) - terahertz radiation , materials science , transmittance , optics , optoelectronics , nanowire , terahertz spectroscopy and technology , modulation (music) , intensity (physics) , transmission (telecommunications) , frequency modulation , physics , radio frequency , telecommunications , computer science , acoustics
Aligned Ni nanowire (NW) arrays were investigated for terahertz (THz) wave modulation. By adjusting the NW density and order of the NW arrays, the resonant frequency and intensity of the THz waves can be effectively tuned. The tuning range of the resonant frequency is about 0.29 THz, and a transmittance of less than 40% in the frequency region from 0.5 to 2 THz is achieved by changing the NW density. Although the order of the NW arrays has no influence on the resonant frequency, the transmittance can be tuned about 21%. The ability to tune the intensity and resonant frequency effectively and the ease of fabrication of the Ni-NW arrays make them the potential candidates for THz tunable filters, intensity modulators, and spatial light modulators.