Spatial dispersion in three-dimensional drawn magnetic metamaterials.
We characterize spatial dispersion in longitudinally invariant drawn metamaterials with a magnetic response at terahertz frequencies, whereby a change in the angle of the incident field produces a shift in the resonant frequency. We present a simple analytical model to predict this shift. We also demonstrate that the spatial dispersion is eliminated by breaking the longitudinal invariance using laser ablation. The experimental results are in agreement with numerical simulations.
Institute of Photonics and Optical Science, School of Physics, University of Sydney, NSW 2006, Australia. alessandro.tuniz@sydney.edu.au
Alessandro
A
Tuniz
Benjamin
B
Pope
Anna
A
Wang
Maryanne C J
MC
Large
Shaghik
S
Atakaramians
Seong-Sik
SS
Min
Elise M
EM
Pogson
Roger A
RA
Lewis
Avi
A
Bendavid
Alexander
A
Argyros
Simon C
SC
Fleming
Boris T
BT
Kuhlmey
D003198:Computer Simulation; D060526:Magnetic Fields; D059346:Magnets; D008962:Models, Theoretical; D011829:Radiation Dosage