An all-dielectric route for terahertz cloaking.

Autor: Gaillot 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 C, Lippens D
Jazyk: angličtina
Zdroj: Optics express [Opt Express] 2008 Mar 17; Vol. 16 (6), pp. 3986-92.
DOI: 10.1364/oe.16.003986
Abstrakt: 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.
Databáze: MEDLINE