An all-dielectric route for terahertz cloaking

Opt Express. 2008 Mar 17;16(6):3986-92. doi: 10.1364/oe.16.003986.

Abstract

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.

MeSH terms

  • Computer Simulation
  • Electric Impedance
  • Infrared Rays*
  • Microwaves*
  • Models, Theoretical*
  • Optics and Photonics*
  • Security Measures*