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.
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
Davy P
DP
Gaillot
Charles
C
Croënne
Didier
D
Lippens
D003198:Computer Simulation; D017097:Electric Impedance; D007259:Infrared Rays; D008872:Microwaves; D008962:Models, Theoretical; D055095:Optics and Photonics; D012637:Security Measures