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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 6 — Mar. 19, 2007
  • pp: 3312–3317

Refocusing of backscattered microwaves in target detection by using LHM flat lens

G. Wang, J. R. Fang, and X. T. Dong  »View Author Affiliations


Optics Express, Vol. 15, Issue 6, pp. 3312-3317 (2007)
http://dx.doi.org/10.1364/OE.15.003312


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Abstract

When microwave emitted from a point source is focused on a target by using a left-handed metamaterial (LHM) flat lens, microwave backscattered from the target will be refocused by the LHM lens in the vicinity of the point source. Numerical simulations with two-dimensional (2D) finite-difference time-domain (FDTD) method demonstrate that, even for flat LHM lens of material losses to the order as that reported in some LHM microwave experiments and simulations, the refocusing of backscattered microwave will yield a sub-wavelength lateral resolution and remarkable enhancement of the backscattered microwave, which will benefit the detection and imaging of small target.

© 2007 Optical Society of America

OCIS Codes
(110.2990) Imaging systems : Image formation theory
(220.3630) Optical design and fabrication : Lenses
(290.1350) Scattering : Backscattering

ToC Category:
Metamaterials

History
Original Manuscript: December 14, 2006
Revised Manuscript: January 26, 2007
Manuscript Accepted: February 2, 2007
Published: March 19, 2007

Citation
G. Wang, J. R. Fang, and X. T. Dong, "Refocusing of backscattered microwaves in target detection by using LHM flat lens," Opt. Express 15, 3312-3317 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-6-3312


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