An all-dielectric route for terahertz cloaking.
An original all-dielectric design that performs cloaking at 0.58 THz is demonstrated. The cloak consists of radially positioned micrometer-sized ferroelectric cylinders which exhibit under Mie theory a strong magnetic resonance. Full-wave simulations coupled with a field-summation retrieval technique were employed to adjust the rods magnetic plasma frequency; hence, the radial distribution in the permeability of the cloak. The behavior of the complete micro-structured device was simulated and results unambiguously show good reconstruction of the E-field wavefronts behind the cloak with high power transmission. This all-dielectric configuration provides an attractive route for designing cloaking devices at microwave and terahertz frequencies.
Gaillot
Davy P
DP
Institut d'Electronique de Microélectronique et de Nanotechnologie, Université des Sciences et technologies de Lille 59652 Villeneuve d'Ascq Cedex, France. davy.gaillot@iemn.univ-lille1.fr
Croënne
Charles
C
Lippens
Didier
D
D003198:Computer Simulation; D017097:Electric Impedance; D007259:Infrared Rays; D008872:Microwaves; D008962:Models, Theoretical; D055095:Optics and Photonics; D012637:Security Measures