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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 10 — May. 15, 2013
  • pp: 1606–1608

Thin low-loss dielectric coatings for free-space cloaking

Yaroslav Urzhumov, Nathan Landy, Tom Driscoll, Dimitri Basov, and David R. Smith  »View Author Affiliations

Optics Letters, Vol. 38, Issue 10, pp. 1606-1608 (2013)

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We report stereolithographic polymer-based fabrication and experimental operation of a microwave X-band cloaking device. The device is a relatively thin (about one wavelength thick) shell of an air-dielectric composite, in which the dielectric component has negligible loss and dispersion. In a finite band (9.7–10.1 GHz), the shell eliminates the shadow and strongly suppresses scattering from a conducting cylinder of six-wavelength diameter for TE-polarized free-space plane waves. The device does not require an immersion liquid or conducting ground planes for its operation. The dielectric constant of the polymer is low enough (ϵ=2.45) to suggest that this cloaking technique would be suitable for higher frequency radiation, including visible light.

© 2013 Optical Society of America

OCIS Codes
(160.5470) Materials : Polymers
(290.1350) Scattering : Backscattering
(290.3200) Scattering : Inverse scattering
(350.4010) Other areas of optics : Microwaves
(290.2558) Scattering : Forward scattering
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:

Original Manuscript: January 31, 2013
Revised Manuscript: April 4, 2013
Manuscript Accepted: April 10, 2013
Published: May 3, 2013

Yaroslav Urzhumov, Nathan Landy, Tom Driscoll, Dimitri Basov, and David R. Smith, "Thin low-loss dielectric coatings for free-space cloaking," Opt. Lett. 38, 1606-1608 (2013)

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