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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 23 — Dec. 1, 2012
  • pp: 4940–4942

Flat metasurfaces to focus electromagnetic waves in reflection geometry

Xin Li, Shiyi Xiao, Bengeng Cai, Qiong He, Tie Jun Cui, and Lei Zhou  »View Author Affiliations


Optics Letters, Vol. 37, Issue 23, pp. 4940-4942 (2012)
http://dx.doi.org/10.1364/OL.37.004940


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Abstract

We show that a flat metasurface with a parabolic reflection-phase distribution can focus an impinging plane wave to a point image in reflection geometry. Our system is much thinner than conventional geometric-optics devices and does not suffer the energy-loss issues encountered by many metamaterial devices working in transmission geometry. We designed realistic microwave samples and performed near-field scanning experiments to verify the focusing effect. Experimental results are in good agreement with full wave simulations, model calculations, and theoretical analyses.

© 2012 Optical Society of America

OCIS Codes
(110.2760) Imaging systems : Gradient-index lenses
(160.3918) Materials : Metamaterials

ToC Category:
Imaging Systems

History
Original Manuscript: August 30, 2012
Revised Manuscript: October 29, 2012
Manuscript Accepted: November 5, 2012
Published: November 28, 2012

Citation
Xin Li, Shiyi Xiao, Bengeng Cai, Qiong He, Tie Jun Cui, and Lei Zhou, "Flat metasurfaces to focus electromagnetic waves in reflection geometry," Opt. Lett. 37, 4940-4942 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-23-4940

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