Open AccessTHz band-stop filter using metamaterials surfaced on LiNbO_3 sub-wavelength slab waveguide
Author(s) -
Bin Zhang,
Qiang Wu,
Chongpei Pan,
Ruobai Feng,
Jingjun Xu,
Cibo Lou,
Xiaodong Wang,
Fuhua Yang
Publication year - 2015
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.23.016042
Subject(s) - optics , terahertz radiation , metamaterial , wavelength , slab , waveguide , electric field , materials science , optoelectronics , physics , quantum mechanics , geophysics
We designed and implemented periodic bar arrays metamaterials to select appropriate frequencies of terahertz (THz) waves propagating in a LiNbO(3) sub-wavelength waveguide. The spatial and temporal electric field profiles of the THz waves were recorded using a time-resolved phase-contrast imaging system. The metamaterials can operate as a band-stop filter to realize blocking back THz waves in a band range of 0.6-1.0 THz, while transparent transmission for the fundamental mode of the slab over a range of 0.3-0.6 THz.